- tor-announce - lists.torproject.org

Tor Browser 8.0 is released
by Nicolas Vigier 05 Sep '18

05 Sep '18

For the past year, we have been collecting feedback on how we can make Tor Browser work better for you. Tor Browser 8.0, our first stable release based on Firefox 60 ESR, is now available from the Tor Browser Project page [1] and also from our distribution directory [2]. This release is all about users first. 1: https://www.torproject.org/download/download-easy.html 2: https://www.torproject.org/dist/torbrowser/8.0/ Tor Browser 8.0 comes with a series of user experience improvements that address a set of long-term Tor Browser issues you’ve told us about. To meet our users' needs, Tor Browser has a new user onboarding experience; an updated landing page that follows our styleguide [3]; additional language support; and new behaviors for bridge fetching, displaying a circuit, and visiting .onion sites. 3: https://styleguide.torproject.org/ _New User Onboarding_ For the most part, using Tor is like using any other browser (and it is based on Firefox), but there are some usage differences and cool things happening behind the scenes that users should be aware of. Our new onboarding experience aims to better let you know about unique aspects of Tor Browser and how to maximize those for your best browsing experience. [4][5] 4: https://extra.torproject.org/blog/2018-09-05-tor-browser-80/tb8-onboarding-… 5: https://extra.torproject.org/blog/2018-09-05-tor-browser-80/tb8-circuit-dis… _Improved Bridge Fetching_ For users where Tor is blocked, we have previously offered a handful of bridges in the browser to bypass censorship. But to receive additional bridges, you had to send an email or visit a website, which posed a set of problems. To simplify how you request bridges, we now have a new bridge configuration flow when you when you launch Tor. Now all you have to do is solve a captcha in Tor Launcher, and you’ll get a bridge IP. We hope this simplification will allow more people to bypass censorship and browse the internet freely and privately. [6] 6: https://extra.torproject.org/blog/2018-09-05-tor-browser-80/tb8-bridges-sma… _Better Language Support_ Millions of people around the world use Tor, but not everyone has been able to use Tor in their language. In Tor Browser 8, we’ve added resources and support for nine previously unsupported languages: Catalan, Irish, Indonesian, Icelandic, Norwegian, Danish, Hebrew, Swedish, and Traditional Chinese. Apart from those highlights, a number of other component and toolchains got an update for this major release. In particular, we now ship Tor 0.3.3.9 with OpenSSL 1.0.2p and Libevent 2.1.8. Moreover, we switched to the pure WebExtension version of NoScript (version 10.1.9.1) which we still need to provide the security slider functionality. Additionally, we start shipping 64bit builds for Windows users which should enhance Tor Browser stability compared to the 32bit bundles. Providing this many improvements for our users could only be possible with collaboration between the Tor Browser team and Tor's UX team, Community team, Services Admin team, and our volunteers. We would like to thank everyone for working hard over the past year to bring all these new features to our users. _Known Issues_ We already collected a number of unresolved bugs since Tor Browser 7.5.6 and tagged them with our ff60-esr keyword [7] to keep them on our radar. The most important ones are listed below: 7: https://trac.torproject.org/projects/tor/query?status=!closed&keywords=… * WebGL is broken right now * We disable Stylo on macOS due to reproducibility issues [8] we need to investigate and fix. This will likely not get fixed for Tor Browser 8, as we need some baking time on our nightly/alpha channel before we are sure there are no reproducibility/stability regressions. The tentative plan is to get it ready for Tor Browser 8.5. 8: https://trac.torproject.org/projects/tor/ticket/26475 Note: This release is signed with a new GPG subkey as the old one expired a couple of days ago. You might need to refresh your copy of the public part of the Tor Browser signing key before doing the verification. The fingerprint of the new subkey is: 1107 75B5 D101 FB36 BC6C 911B EB77 4491 D9FF 06E2 _Give Feedback_ This is only the beginning of our efforts to put users first. If you find a bug or have a suggestion for how we could improve this release, please let us know [9]. 9: https://trac.torproject.org/projects/tor/wiki/doc/community/HowToReportBugF… _Changelog_ The full changelog since Tor Browser 7.5.6 is: * All platforms * Update Firefox to 60.2.0esr * Update Tor to 0.3.3.9 * Update OpenSSL to 1.0.2p * Update Libevent to 2.1.8 * Update Torbutton to 2.0.6 * Bug 26960: Implement new about:tor start page * Bug 26961: Implement new user onboarding * Bug 26962: Circuit display onboarding * Bug 27301: Improve about:tor behavior and appearance * Bug 27214: Improve the onboarding text * Bug 26321: Move 'New Identity', 'New Circuit' to File, hamburger menus * Bug 26100: Adapt Torbutton to Firefox 60 ESR * Bug 26520: Fix sec slider/NoScript for TOR_SKIP_LAUNCH=1 * Bug 27401: Start listening for NoScript before it loads * Bug 26430: New Torbutton icon * Bug 24309: Move circuit display to the identity popup * Bug 26884: Use Torbutton to provide security slider on mobile * Bug 26128: Adapt security slider to the WebExtensions version of NoScript * Bug 27276: Adapt to new NoScript messaging protocol * Bug 23247: Show security state of .onions * Bug 26129: Show our about:tor page on startup * Bug 26235: Hide new unusable items from help menu * Bug 26058: Remove workaround for hiding 'sign in to sync' button * Bug 26590: Use new svg.disabled pref in security slider * Bug 26655: Adjust color and size of onion button * Bug 26500: Reposition circuit display relay icon for RTL locales * Bug 26409: Remove spoofed locale implementation * Bug 26189: Remove content-policy.js * Bug 26544: Images are not centered anymore * Bug 26490: Remove the security slider notification * Bug 25126: Make about:tor layout responsive * Bug 27097: Add text for Tor News signup widget * Bug 21245: Add da translation to Torbutton and keep track of it * Bug 27129+20628: Add locales ca, ga, id, is, nb, da, he, sv, and zh-TW * Translations update * Update Tor Launcher to 0.2.16.3 * Bug 23136: Moat integration (fetch bridges for the user) * Bug 25750: Update Tor Launcher to make it compatible with Firefox 60 ESR * Bug 26985: Help button icons missing * Bug 25509: Improve the proxy help text * Bug 26466: Remove sv-SE from tracking for releases * Bug 27129+20628: Add locales ca, ga, id, is, nb, da, he, sv, and zh-TW * Translations update * Update HTTPS Everywhere to 2018.8.22 * Update NoScript to 10.1.9.1 * Update meek to 0.31 * Bug 26477: Make meek extension compatible with ESR 60 * Update obfs4proxy to v0.0.7 (bug 25356) * Bug 27082: Enable a limited UITour for user onboarding * Bug 26961: New user onboarding * Bug 26962: New feature onboarding * Bug 27403: The onboarding bubble is not always displayed * Bug 27283: Fix first-party isolation for UI tour * Bug 27213: Update about:tbupdate to new (about:tor) layout * Bug 14952+24553: Enable HTTP2 and AltSvc * Bug 25735: Tor Browser stalls while loading Facebook login page * Bug 17252: Enable TLS session identifiers with first-party isolation * Bug 26353: Prevent speculative connects that violate first-party isolation * Bug 26670: Make canvas permission prompt respect first-party isolation * Bug 24056: Use en-US strings in HTML forms if locale is spoofed to english * Bug 26456: HTTP .onion sites inherit previous page's certificate information * Bug 26561: .onion images are not displayed * Bug 26321: Move 'New Identity', 'New Circuit' to File, hamburger menus * Bug 26833: Backport Mozilla's bug 1473247 * Bug 26628: Backport Mozilla's bug 1470156 * Bug 26237: Clean up toolbar for ESR60-based Tor Browser * Bug 26519: Avoid Firefox icons in ESR60 * Bug 26039: Load our preferences that modify extensions (fixup) * Bug 26515: Update Tor Browser blog post URLs * Bug 26216: Fix broken MAR file generation * Bug 26409: Remove spoofed locale implementation * Bug 25543: Rebase Tor Browser patches for ESR60 * Bug 23247: Show security state of .onions * Bug 26039: Load our preferences that modify extensions * Bug 17965: Isolate HPKP and HSTS to URL bar domain * Bug 21787: Spoof en-US for date picker * Bug 21607: Disable WebVR for now until it is properly audited * Bug 21549: Disable wasm for now until it is properly audited * Bug 26614: Disable Web Authentication API until it is properly audited * Bug 27281: Enable Reader View mode again * Bug 26114: Don't expose navigator.mozAddonManager to websites * Bug 21850: Update about:tbupdate handling for e10s * Bug 26048: Fix potentially confusing "restart to update" message * Bug 27221: Purge startup cache if Tor Browser version changed * Bug 26049: Reduce delay for showing update prompt to 1 hour * Bug 26365: Add potential AltSvc support * Bug 9145: Fix broken hardware acceleration on Windows and enable it * Bug 26045: Add new MAR signing keys * Bug 25215: Revert bug 18619 (we are not disabling IndexedDB any longer) * Bug 19910: Rip out optimistic data socks handshake variant (#3875) * Bug 22564: Hide Firefox Sync * Bug 25090: Disable updater telemetry * Bug 26127: Make sure Torbutton and Tor Launcher are not treated as legacy extensions * Bug 13575: Disable randomised Firefox HTTP cache decay user tests * Bug 22548: Firefox downgrades VP9 videos to VP8 for some users * Bug 24995: Include git hash in tor --version * Bug 27268+27257+27262+26603 : Preferences clean-up * Bug 26073: Migrate general.useragent.locale to intl.locale.requested * Bug 27129+20628: Make Tor Browser available in ca, ga, id, is, nb, da, he, sv, and zh-TW * Bug 12927: Include Hebrew translation into Tor Browser * Bug 21245: Add danish (da) translation * Windows * Bug 20636+10026: Create 64bit Tor Browser for Windows * Bug 26239+24197: Enable content sandboxing for 64bit Windows builds * Bug 26514: Fix intermittent updater failures on Win64 (Error 19) * Bug 26874: Fix UNC path restrictions failure in Tor Browser 8.0a9 * Bug 12968: Enable HEASLR in Windows x86_64 builds * Bug 26381: Work around endless loop during page load and about:tor not loading * Bug 27411: Fix broken security slider and NoScript interaction on Windows * Bug 22581: Fix shutdown crash * Bug 25266: PT config should include full names of executable files * Bug 26304: Update zlib to version 1.2.11 * Update tbb-windows-installer to 0.4 * Bug 26355: Update tbb-windows-installer to check for Windows7+ * Bug 26355: Require Windows7+ for updates to Tor Browser 8 * OS X * Bug 24136: After loading file:// URLs clicking on links is broken on OS X * Bug 24243: Tor Browser only renders HTML for local pages via file:// * Bug 24263: Tor Browser does not run extension scripts if loaded via about:debugging * Bug 22794: Don't open AF_INET/AF_INET6 sockets when AF_LOCAL is configured * Linux * Bug 22794: Don't open AF_INET/AF_INET6 sockets when AF_LOCAL is configured * Bug 25485: Unbreak Tor Browser on systems with newer libstdc++ * Bug 20866: Fix OpenGL software rendering on systems with newer libstdc++ * Bug 26951+18022: Fix execdesktop argument passing * Bug 24136: After loading file:// URLs clicking on links is broken on Linux * Bug 24243: Tor Browser only renders HTML for local pages via file:// * Bug 24263: Tor Browser does not run extension scripts if loaded via about:debugging * Bug 20283: Tor Browser should run without a `/proc` filesystem. * Bug 26354: Set SSE2 support as minimal requirement for Tor Browser 8 * Build System * All * Bug 26362+26410: Use old MAR format for first ESR60-based stable * Bug 27020: RBM build fails with runc version 1.0.1 * Bug 26949: Use GitHub repository for STIX * Bug 26773: Add --verbose to the ./mach build flag for firefox * Bug 26319: Don't package up Tor Browser in the `mach package` step * Bug 27178: add support for xz compression in mar files * Clean up * Windows * Bug 26203: Adapt tor-browser-build/tor-browser for Windows * Bug 26204: Bundle d3dcompiler_47.dll for Tor Browser 8 * Bug 26205: Don't build the uninstaller for Windows during Firefox compilation * Bug 26206: Ship pthread related dll where needed * Bug 26396: Build libwinpthread reproducible * Bug 25837: Integrate fxc2 into our build setup for Windows builds * Bug 27152: Use mozilla/fxc2.git for the fxc2 repository * Bug 25894: Get a rust cross-compiler for Windows * Bug 25554: Bump mingw-w64 version for ESR 60 * Bug 23561: Fix nsis builds for Windows 64 * Bug 13469: Windows installer is missing many languages from NSIS file * Bug 23231: Remove our STL Wrappers workaround for Windows 64bit * Bug 26370: Don't copy msvcr100.dll and libssp-0.dll twice * Bug 26476: Work around Tor Browser crashes due to fix for bug 1467041 * Bug 18287: Use SHA-2 signature for Tor Browser setup executables * Bug 25420: Update GCC to 6.4.0 * Bug 16472: Update Binutils to 2.26.1 * Bug 20302: Fix FTE compilation for Windows with GCC 6.4.0 * Bug 25111: Don't compile Yasm on our own anymore for Windows Tor Browser * Bug 18691: Switch Windows builds from precise to jessie * OS X * Bug 24632: Update macOS toolchain for ESR 60 * Bug 9711: Build our own cctools for macOS cross-compilation * Bug 25548: Update macOS SDK for Tor Browser builds to 10.11 * Bug 26003: Clean up our mozconfig-osx-x86_64 file * Bug 26195: Use new cctools in our macosx-toolchain project * Bug 25975: Get a rust cross-compiler for macOS * Bug 26475: Disable Stylo to make macOS build reproducible * Bug 26489: Fix .app directory name in tools/dmg2mar * Linux * Bug 26073: Patch tor-browser-build for transition to ESR 60 * Bug 25481: Rust support for tor-browser and tor * Bug 25304: Update GCC to 6.4.0 * Bug 16472: Update Binutils to 2.26.1

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Tor 0.3.3.9 is released: bridge relay operators should upgrade
by Roger Dingledine 14 Jul '18

14 Jul '18

(If you are about to reply saying "please take me off this list", instead please follow these instructions: https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-announce/ You will have to enter the actual email address you used to subscribe.) The main people who need to upgrade are people who operate a bridge relay -- so their bridge address can resume being given out to censored users, and so their stats can resume being included in the metrics pages. Changes in version 0.3.3.9 - 2018-07-13 Tor 0.3.3.9 moves to a new bridge authority, meaning people running bridge relays should upgrade. o Directory authority changes: - The "Bifroest" bridge authority has been retired; the new bridge authority is "Serge", and it is operated by George from the TorBSD project. Closes ticket 26771. We also put out new stable releases for 0.2.9.16 and 0.3.2.11, and those releases include other backported fixes: https://gitweb.torproject.org/tor.git/tree/ReleaseNotes?h=tor-0.2.9.16 https://gitweb.torproject.org/tor.git/tree/ReleaseNotes?h=tor-0.3.2.11 --Roger

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Tor 0.3.3.8 is released
by Nick Mathewson 09 Jul '18

09 Jul '18

Hello, everyone! (If you are about to reply saying "please take me off this list", instead please follow these instructions: https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-announce/ . If you have trouble, it is probably because you subscribed using a different address than the one you are trying to unsubscribe with. You will have to enter the actual email address you used to subscribe.) Source code for Tor 0.3.3.8 is now available; You can download the source code from the usual place on the website. Packages should be available within the next several weeks, with a new Tor Browser by some time in September. (Don't worry, this isn't an urgent release for clients.) There's also a non-stable release (0.3.4.4-rc) coming out today: for that announcement, see the tor-talk mailing list. ===== Changes in version 0.3.3.8 - 2018-07-09 Tor 0.3.3.8 backports several changes from the 0.3.4.x series, including fixes for a memory leak affecting directory authorities. o Major bugfixes (directory authority, backport from 0.3.4.3-alpha): - Stop leaking memory on directory authorities when planning to vote. This bug was crashing authorities by exhausting their memory. Fixes bug 26435; bugfix on 0.3.3.6. o Major bugfixes (rust, testing, backport from 0.3.4.3-alpha): - Make sure that failing tests in Rust will actually cause the build to fail: previously, they were ignored. Fixes bug 26258; bugfix on 0.3.3.4-alpha. o Minor features (compilation, backport from 0.3.4.4-rc): - When building Tor, prefer to use Python 3 over Python 2, and more recent (contemplated) versions over older ones. Closes ticket 26372. o Minor features (geoip): - Update geoip and geoip6 to the July 3 2018 Maxmind GeoLite2 Country database. Closes ticket 26674. o Minor features (relay, diagnostic, backport from 0.3.4.3-alpha): - Add several checks to detect whether Tor relays are uploading their descriptors without specifying why they regenerated them. Diagnostic for ticket 25686. o Minor bugfixes (circuit path selection, backport from 0.3.4.1-alpha): - Don't count path selection failures as circuit build failures. This change should eliminate cases where Tor blames its guard or the network for situations like insufficient microdescriptors and/or overly restrictive torrc settings. Fixes bug 25705; bugfix on 0.3.3.1-alpha. o Minor bugfixes (compilation, backport from 0.3.4.4-rc): - Fix a compilation warning on some versions of GCC when building code that calls routerinfo_get_my_routerinfo() twice, assuming that the second call will succeed if the first one did. Fixes bug 26269; bugfix on 0.2.8.2-alpha. o Minor bugfixes (control port, backport from 0.3.4.4-rc): - Handle the HSADDRESS= argument to the HSPOST command properly. (Previously, this argument was misparsed and thus ignored.) Fixes bug 26523; bugfix on 0.3.3.1-alpha. Patch by "akwizgran". o Minor bugfixes (memory, correctness, backport from 0.3.4.4-rc): - Fix a number of small memory leaks identified by coverity. Fixes bug 26467; bugfix on numerous Tor versions. o Minor bugfixes (relay, backport from 0.3.4.3-alpha): - Relays now correctly block attempts to re-extend to the previous relay by Ed25519 identity. Previously they would warn in this case, but not actually reject the attempt. Fixes bug 26158; bugfix on 0.3.0.1-alpha. o Minor bugfixes (restart-in-process, backport from 0.3.4.1-alpha): - When shutting down, Tor now clears all the flags in the control.c module. This should prevent a bug where authentication cookies are not generated on restart. Fixes bug 25512; bugfix on 0.3.3.1-alpha. o Minor bugfixes (testing, compatibility, backport from 0.3.4.4-rc): - When running the hs_ntor_ref.py test, make sure only to pass strings (rather than "bytes" objects) to the Python subprocess module. Python 3 on Windows seems to require this. Fixes bug 26535; bugfix on 0.3.1.1-alpha. - When running the ntor_ref.py test, make sure only to pass strings (rather than "bytes" objects) to the Python subprocess module. Python 3 on Windows seems to require this. Fixes bug 26535; bugfix on 0.2.5.5-alpha.

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Tor Browser 7.5.6 is released
by Nicolas Vigier 27 Jun '18

27 Jun '18

Tor Browser 7.5.6 is now available from the Tor Browser Project page [1] and also from our distribution directory. 1: https://www.torproject.org/download/download-easy.html 2: https://www.torproject.org/dist/torbrowser/7.5.6/ This release features important security updates [3] to Firefox. 3: https://www.mozilla.org/en-US/security/advisories/mfsa2018-17/ Tor Browser 7.5.6 updates Firefox to 52.9.0esr and includes newer versions of NoScript and HTTPS Everywhere. Moreover, we added the latest Tor stable version, 0.3.3.7 [4]. 4: https://blog.torproject.org/tor-0337-released This Tor Browser version additionally contains a number of backported patches from the alpha, most notably the feature to treat cookies set by .onion domain as secure as well [5]. 5: https://trac.torproject.org/projects/tor/ticket/21537 For Windows users we activated an option that prevents an accidental proxy bypass when dealing with UNC paths [6]. 6: https://trac.torproject.org/projects/tor/ticket/26424 The full changelog since Tor Browser 7.5.5 is: * All platforms * Update Firefox to 52.9.0esr * Update Tor to 0.3.3.7 * Update Tor Launcher to 0.2.14.5 * Bug 20890: Increase control port connection timeout * Update HTTPS Everywhere to 2018.6.21 * Bug 26451: Prevent HTTPS Everywhere from freezing the browser * Update NoScript to 5.1.8.6 * Bug 21537: Mark .onion cookies as secure * Bug 25938: Backport fix for cross-origin header leak (bug 1334776) * Bug 25721: Backport patches from Mozilla's bug 1448771 * Bug 25147+25458: Sanitize HTML fragments for chrome documents * Bug 26221: Backport fix for leak in SHA256 in nsHttpConnectionInfo.cpp * Windows * Bug 26424: Disable UNC paths to prevent possible proxy bypasses

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Tor 0.3.3.7 is released
by Nick Mathewson 12 Jun '18

12 Jun '18

Hello, everyone! (If you are about to reply saying "please take me off this list", instead please follow these instructions: https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-announce/ . If you have trouble, it is probably because you subscribed using a different address than the one you are trying to unsubscribe with. You will have to enter the actual email address you used to subscribe.) Source code for Tor 0.3.3.7 is now available; You can download the source code from the usual place on the website. Packages should be available within the next several weeks, with a new Tor Browser in the next couple of weeks. There is also a new alpha release today; that one is announced on tor-talk@ as usual. ============= Changes in version 0.3.3.7 - 2018-06-12 Tor 0.3.3.7 backports several changes from the 0.3.4.x series, including fixes for bugs affecting compatibility and stability. o Directory authority changes: - Add an IPv6 address for the "dannenberg" directory authority. Closes ticket 26343. o Minor features (geoip): - Update geoip and geoip6 to the June 7 2018 Maxmind GeoLite2 Country database. Closes ticket 26351. o Minor bugfixes (compatibility, openssl, backport from 0.3.4.2-alpha): - Work around a change in OpenSSL 1.1.1 where return values that would previously indicate "no password" now indicate an empty password. Without this workaround, Tor instances running with OpenSSL 1.1.1 would accept descriptors that other Tor instances would reject. Fixes bug 26116; bugfix on 0.2.5.16. o Minor bugfixes (compilation, backport from 0.3.4.2-alpha): - Silence unused-const-variable warnings in zstd.h with some GCC versions. Fixes bug 26272; bugfix on 0.3.1.1-alpha. o Minor bugfixes (controller, backport from 0.3.4.2-alpha): - Improve accuracy of the BUILDTIMEOUT_SET control port event's TIMEOUT_RATE and CLOSE_RATE fields. (We were previously miscounting the total number of circuits for these field values.) Fixes bug 26121; bugfix on 0.3.3.1-alpha. o Minor bugfixes (hardening, backport from 0.3.4.2-alpha): - Prevent a possible out-of-bounds smartlist read in protover_compute_vote(). Fixes bug 26196; bugfix on 0.2.9.4-alpha. o Minor bugfixes (path selection, backport from 0.3.4.1-alpha): - Only select relays when they have the descriptors we prefer to use for them. This change fixes a bug where we could select a relay because it had _some_ descriptor, but reject it later with a nonfatal assertion error because it didn't have the exact one we wanted. Fixes bugs 25691 and 25692; bugfix on 0.3.3.4-alpha.

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Tor Browser 7.5.5 is released
by Nicolas Vigier 09 Jun '18

09 Jun '18

Tor Browser 7.5.5 is now available from the Tor Browser Project page [1] and also from our distribution directory [2]. 1: https://www.torproject.org/download/download-easy.html 2: https://www.torproject.org/dist/torbrowser/7.5.5/ This release features important security updates [3] to Firefox. 3: https://www.mozilla.org/en-US/security/advisories/mfsa2018-14/ This release updates firefox to 52.8.1esr. In addition, we had to remove the amazon-meek pluggable transport [4]. 4: https://blog.torproject.org/domain-fronting-critical-open-web The full changelog since Tor Browser 7.5.4 is: * All platforms * Update Firefox to 52.8.1esr * Bug 26098: Remove amazon-meek

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Tor 0.3.3.6 is released!
by Nick Mathewson 22 May '18

22 May '18

Hello, everyone! (If you are about to reply saying "please take me off this list", instead please follow these instructions: https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-announce/ . If you have trouble, it is probably because you subscribed using a different address than the one you are trying to unsubscribe with. You will have to enter the actual email address you used to subscribe.) After months of work, Tor 0.3.3.6 is now available! This is the first stable release in the 0.3.3.x series, and we hope you find it useful. You can download the source code from the usual place on the website. If you don't build Tor from source, don't worry! Packages should be available within the next several weeks, with a new Tor Browser by some time in June. ===== Changes in version 0.3.3.6 - 2018-05-22 Tor 0.3.3.6 is the first stable release in the 0.3.3 series. It backports several important fixes from the 0.3.4.1-alpha. The Tor 0.3.3 series includes controller support and other improvements for v3 onion services, official support for embedding Tor within other applications, and our first non-trivial module written in the Rust programming language. (Rust is still not enabled by default when building Tor.) And as usual, there are numerous other smaller bugfixes, features, and improvements. Below are the changes since 0.3.2.10. For a list of only the changes since 0.3.3.5-rc, see the ChangeLog file. o New system requirements: - When built with Rust, Tor now depends on version 0.2.39 of the libc crate. Closes tickets 25310 and 25664. o Major features (embedding): - There is now a documented stable API for programs that need to embed Tor. See tor_api.h for full documentation and known bugs. Closes ticket 23684. - Tor now has support for restarting in the same process. Controllers that run Tor using the "tor_api.h" interface can now restart Tor after Tor has exited. This support is incomplete, however: we fixed crash bugs that prevented it from working at all, but many bugs probably remain, including a possibility of security issues. Implements ticket 24581. o Major features (IPv6, directory documents): - Add consensus method 27, which adds IPv6 ORPorts to the microdesc consensus. This information makes it easier for IPv6 clients to bootstrap and choose reachable entry guards. Implements ticket 23826. - Add consensus method 28, which removes IPv6 ORPorts from microdescriptors. Now that the consensus contains IPv6 ORPorts, they are redundant in microdescs. This change will be used by Tor clients on 0.2.8.x and later. (That is to say, with all Tor clients that have IPv6 bootstrap and guard support.) Implements ticket 23828. - Expand the documentation for AuthDirHasIPv6Connectivity when it is set by different numbers of authorities. Fixes 23870 on 0.2.4.1-alpha. o Major features (onion service v3, control port): - The control port now supports commands and events for v3 onion services. It is now possible to create ephemeral v3 services using ADD_ONION. Additionally, several events (HS_DESC, HS_DESC_CONTENT, CIRC and CIRC_MINOR) and commands (GETINFO, HSPOST, ADD_ONION and DEL_ONION) have been extended to support v3 onion services. Closes ticket 20699; implements proposal 284. o Major features (onion services): - Provide torrc options to pin the second and third hops of onion service circuits to a list of nodes. The option HSLayer2Guards pins the second hop, and the option HSLayer3Guards pins the third hop. These options are for use in conjunction with experiments with "vanguards" for preventing guard enumeration attacks. Closes ticket 13837. - When v3 onion service clients send introduce cells, they now include the IPv6 address of the rendezvous point, if it has one. Current v3 onion services running 0.3.2 ignore IPv6 addresses, but in future Tor versions, IPv6-only v3 single onion services will be able to use IPv6 addresses to connect directly to the rendezvous point. Closes ticket 23577. Patch by Neel Chauhan. o Major features (relay): - Implement an option, ReducedExitPolicy, to allow an Tor exit relay operator to use a more reasonable ("reduced") exit policy, rather than the default one. If you want to run an exit node without thinking too hard about which ports to allow, this one is for you. Closes ticket 13605. Patch from Neel Chauhan. o Major features (rust, portability, experimental): - Tor now ships with an optional implementation of one of its smaller modules (protover.c) in the Rust programming language. To try it out, install a Rust build environment, and configure Tor with "--enable-rust --enable-cargo-online-mode". This should not cause any user-visible changes, but should help us gain more experience with Rust, and plan future Rust integration work. Implementation by Chelsea Komlo. Closes ticket 22840. o Major bugfixes (directory authorities, security, backport from 0.3.4.1-alpha): - When directory authorities read a zero-byte bandwidth file, they would previously log a warning with the contents of an uninitialised buffer. They now log a warning about the empty file instead. Fixes bug 26007; bugfix on 0.2.2.1-alpha. o Major bugfixes (security, directory authority, denial-of-service): - Fix a bug that could have allowed an attacker to force a directory authority to use up all its RAM by passing it a maliciously crafted protocol versions string. Fixes bug 25517; bugfix on 0.2.9.4-alpha. This issue is also tracked as TROVE-2018-005. o Major bugfixes (crash, backport from 0.3.4.1-alpha): - Avoid a rare assertion failure in the circuit build timeout code if we fail to allow any circuits to actually complete. Fixes bug 25733; bugfix on 0.2.2.2-alpha. o Major bugfixes (netflow padding): - Stop adding unneeded channel padding right after we finish flushing to a connection that has been trying to flush for many seconds. Instead, treat all partial or complete flushes as activity on the channel, which will defer the time until we need to add padding. This fix should resolve confusing and scary log messages like "Channel padding timeout scheduled 221453ms in the past." Fixes bug 22212; bugfix on 0.3.1.1-alpha. o Major bugfixes (networking): - Tor will no longer reject IPv6 address strings from Tor Browser when they are passed as hostnames in SOCKS5 requests. Fixes bug 25036, bugfix on Tor 0.3.1.2. o Major bugfixes (onion service, backport from 0.3.4.1-alpha): - Correctly detect when onion services get disabled after HUP. Fixes bug 25761; bugfix on 0.3.2.1. o Major bugfixes (performance, load balancing): - Directory authorities no longer vote in favor of the Guard flag for relays without directory support. Starting in Tor 0.3.0.1-alpha, clients have been avoiding using such relays in the Guard position, leading to increasingly broken load balancing for the 5%-or-so of Guards that don't advertise directory support. Fixes bug 22310; bugfix on 0.3.0.6. o Major bugfixes (relay): - If we have failed to connect to a relay and received a connection refused, timeout, or similar error (at the TCP level), do not try that same address/port again for 60 seconds after the failure has occurred. Fixes bug 24767; bugfix on 0.0.6. o Major bugfixes (relay, denial of service, backport from 0.3.4.1-alpha): - Impose a limit on circuit cell queue size. The limit can be controlled by a consensus parameter. Fixes bug 25226; bugfix on 0.2.4.14-alpha. o Minor features (cleanup): - Tor now deletes the CookieAuthFile and ExtORPortCookieAuthFile when it stops. Closes ticket 23271. o Minor features (compatibility, backport from 0.3.4.1-alpha): - Avoid some compilation warnings with recent versions of LibreSSL. Closes ticket 26006. o Minor features (config options): - Change the way the default value for MaxMemInQueues is calculated. We now use 40% of the hardware RAM if the system has 8 GB RAM or more. Otherwise we use the former value of 75%. Closes ticket 24782. o Minor features (continuous integration): - Update the Travis CI configuration to use the stable Rust channel, now that we have decided to require that. Closes ticket 25714. o Minor features (continuous integration, backport from 0.3.4.1-alpha): - Our .travis.yml configuration now includes support for testing the results of "make distcheck". (It's not uncommon for "make check" to pass but "make distcheck" to fail.) Closes ticket 25814. - Our Travis CI configuration now integrates with the Coveralls coverage analysis tool. Closes ticket 25818. o Minor features (defensive programming): - Most of the functions in Tor that free objects have been replaced with macros that free the objects and set the corresponding pointers to NULL. This change should help prevent a large class of dangling pointer bugs. Closes ticket 24337. - Where possible, the tor_free() macro now only evaluates its input once. Part of ticket 24337. - Check that microdesc ed25519 ids are non-zero in node_get_ed25519_id() before returning them. Implements ticket 24001, patch by "aruna1234". o Minor features (directory authority): - When directory authorities are unable to add signatures to a pending consensus, log the reason why. Closes ticket 24849. o Minor features (embedding): - Tor can now start with a preauthenticated control connection created by the process that launched it. This feature is meant for use by programs that want to launch and manage a Tor process without allowing other programs to manage it as well. For more information, see the __OwningControllerFD option documented in control-spec.txt. Closes ticket 23900. - On most errors that would cause Tor to exit, it now tries to return from the tor_main() function, rather than calling the system exit() function. Most users won't notice a difference here, but it should be significant for programs that run Tor inside a separate thread: they should now be able to survive Tor's exit conditions rather than having Tor shut down the entire process. Closes ticket 23848. - Applications that want to embed Tor can now tell Tor not to register any of its own POSIX signal handlers, using the __DisableSignalHandlers option. Closes ticket 24588. o Minor features (fallback directory list): - Avoid selecting fallbacks that change their IP addresses too often. Select more fallbacks by ignoring the Guard flag, and allowing lower cutoffs for the Running and V2Dir flags. Also allow a lower bandwidth, and a higher number of fallbacks per operator (5% of the list). Implements ticket 24785. - Update the fallback whitelist and blacklist based on opt-ins and relay changes. Closes tickets 22321, 24678, 22527, 24135, and 24695. o Minor features (fallback directory mirror configuration): - Add a nickname to each fallback in a C comment. This makes it easier for operators to find their relays, and allows stem to use nicknames to identify fallbacks. Implements ticket 24600. - Add a type and version header to the fallback directory mirror file. Also add a delimiter to the end of each fallback entry. This helps external parsers like stem and Relay Search. Implements ticket 24725. - Add an extrainfo cache flag for each fallback in a C comment. This allows stem to use fallbacks to fetch extra-info documents, rather than using authorities. Implements ticket 22759. - Add the generateFallbackDirLine.py script for automatically generating fallback directory mirror lines from relay fingerprints. No more typos! Add the lookupFallbackDirContact.py script for automatically looking up operator contact info from relay fingerprints. Implements ticket 24706, patch by teor and atagar. - Reject any fallback directory mirror that serves an expired consensus. Implements ticket 20942, patch by "minik". - Remove commas and equals signs from external string inputs to the fallback list. This avoids format confusion attacks. Implements ticket 24726. - Remove the "weight=10" line from fallback directory mirror entries. Ticket 24681 will maintain the current fallback weights by changing Tor's default fallback weight to 10. Implements ticket 24679. - Stop logging excessive information about fallback netblocks. Implements ticket 24791. o Minor features (forward-compatibility): - If a relay supports some link authentication protocol that we do not recognize, then include that relay's ed25519 key when telling other relays to extend to it. Previously, we treated future versions as if they were too old to support ed25519 link authentication. Closes ticket 20895. o Minor features (geoip): - Update geoip and geoip6 to the May 1 2018 Maxmind GeoLite2 Country database. Closes ticket 26104. o Minor features (heartbeat): - Add onion service information to our heartbeat logs, displaying stats about the activity of configured onion services. Closes ticket 24896. o Minor features (instrumentation, development): - Add the MainloopStats option to allow developers to get instrumentation information from the main event loop via the heartbeat messages. We hope to use this to improve Tor's behavior when it's trying to sleep. Closes ticket 24605. o Minor features (IPv6): - Make IPv6-only clients wait for microdescs for relays, even if we were previously using descriptors (or were using them as a bridge) and have a cached descriptor for them. Implements ticket 23827. - When a consensus has IPv6 ORPorts, make IPv6-only clients use them, rather than waiting to download microdescriptors. Implements ticket 23827. o Minor features (log messages): - Improve log message in the out-of-memory handler to include information about memory usage from the different compression backends. Closes ticket 25372. - Improve a warning message that happens when we fail to re-parse an old router because of an expired certificate. Closes ticket 20020. - Make the log more quantitative when we hit MaxMemInQueues threshold exposing some values. Closes ticket 24501. o Minor features (logging): - Clarify the log messages produced when getrandom() or a related entropy-generation mechanism gives an error. Closes ticket 25120. - Added support for the Android logging subsystem. Closes ticket 24362. o Minor features (performance): - Support predictive circuit building for onion service circuits with multiple layers of guards. Closes ticket 23101. - Use stdatomic.h where available, rather than mutexes, to implement atomic_counter_t. Closes ticket 23953. o Minor features (performance, 32-bit): - Improve performance on 32-bit systems by avoiding 64-bit division when calculating the timestamp in milliseconds for channel padding computations. Implements ticket 24613. - Improve performance on 32-bit systems by avoiding 64-bit division when timestamping cells and buffer chunks for OOM calculations. Implements ticket 24374. o Minor features (performance, OSX, iOS): - Use the mach_approximate_time() function (when available) to implement coarse monotonic time. Having a coarse time function should avoid a large number of system calls, and improve performance slightly, especially under load. Closes ticket 24427. o Minor features (performance, windows): - Improve performance on Windows Vista and Windows 7 by adjusting TCP send window size according to the recommendation from SIO_IDEAL_SEND_BACKLOG_QUERY. Closes ticket 22798. Patch from Vort. o Minor features (sandbox): - Explicitly permit the poll() system call when the Linux seccomp2-based sandbox is enabled: apparently, some versions of libc use poll() when calling getpwnam(). Closes ticket 25313. o Minor features (storage, configuration): - Users can store cached directory documents somewhere other than the DataDirectory by using the CacheDirectory option. Similarly, the storage location for relay's keys can be overridden with the KeyDirectory option. Closes ticket 22703. o Minor features (testing): - Add a "make test-rust" target to run the rust tests only. Closes ticket 25071. o Minor features (testing, debugging, embedding): - For development purposes, Tor now has a mode in which it runs for a few seconds, then stops, and starts again without exiting the process. This mode is meant to help us debug various issues with ticket 23847. To use this feature, compile with --enable-restart-debugging, and set the TOR_DEBUG_RESTART environment variable. This is expected to crash a lot, and is really meant for developers only. It will likely be removed in a future release. Implements ticket 24583. o Minor bugfixes (build, rust): - Fix output of autoconf checks to display success messages for Rust dependencies and a suitable rustc compiler version. Fixes bug 24612; bugfix on 0.3.1.3-alpha. - Don't pass the --quiet option to cargo: it seems to suppress some errors, which is not what we want to do when building. Fixes bug 24518; bugfix on 0.3.1.7. - Build correctly when building from outside Tor's source tree with the TOR_RUST_DEPENDENCIES option set. Fixes bug 22768; bugfix on 0.3.1.7. o Minor bugfixes (C correctness): - Fix a very unlikely (impossible, we believe) null pointer dereference. Fixes bug 25629; bugfix on 0.2.9.15. Found by Coverity; this is CID 1430932. o Minor bugfixes (channel, client): - Better identify client connection when reporting to the geoip client cache. Fixes bug 24904; bugfix on 0.3.1.7. o Minor bugfixes (circuit, cannibalization): - Don't cannibalize preemptively-built circuits if we no longer recognize their first hop. This situation can happen if our Guard relay went off the consensus after the circuit was created. Fixes bug 24469; bugfix on 0.0.6. o Minor bugfixes (client, backport from 0.3.4.1-alpha): - Don't consider Tor running as a client if the ControlPort is open, but no actual client ports are open. Fixes bug 26062; bugfix on 0.2.9.4-alpha. o Minor bugfixes (compilation): - Fix a C99 compliance issue in our configuration script that caused compilation issues when compiling Tor with certain versions of xtools. Fixes bug 25474; bugfix on 0.3.2.5-alpha. o Minor bugfixes (controller): - Restore the correct operation of the RESOLVE command, which had been broken since we added the ability to enable/disable DNS on specific listener ports. Fixes bug 25617; bugfix on 0.2.9.3-alpha. - Avoid a (nonfatal) assertion failure when extending a one-hop circuit from the controller to become a multihop circuit. Fixes bug 24903; bugfix on 0.2.5.2-alpha. o Minor bugfixes (correctness): - Remove a nonworking, unnecessary check to see whether a circuit hop's identity digest was set when the circuit failed. Fixes bug 24927; bugfix on 0.2.4.4-alpha. o Minor bugfixes (correctness, client, backport from 0.3.4.1-alpha): - Upon receiving a malformed connected cell, stop processing the cell immediately. Previously we would mark the connection for close, but continue processing the cell as if the connection were open. Fixes bug 26072; bugfix on 0.2.4.7-alpha. o Minor bugfixes (directory authorities, IPv6): - When creating a routerstatus (vote) from a routerinfo (descriptor), set the IPv6 address to the unspecified IPv6 address, and explicitly initialize the port to zero. Fixes bug 24488; bugfix on 0.2.4.1-alpha. o Minor bugfixes (documentation): - Document that the PerConnBW{Rate,Burst} options will fall back to their corresponding consensus parameters only if those parameters are set. Previously we had claimed that these values would always be set in the consensus. Fixes bug 25296; bugfix on 0.2.2.7-alpha. o Minor bugfixes (documentation, backport from 0.3.4.1-alpha): - Stop saying in the manual that clients cache ipv4 dns answers from exit relays. We haven't used them since 0.2.6.3-alpha, and in ticket 24050 we stopped even caching them as of 0.3.2.6-alpha, but we forgot to say so in the man page. Fixes bug 26052; bugfix on 0.3.2.6-alpha. o Minor bugfixes (exit relay DNS retries): - Re-attempt timed-out DNS queries 3 times before failure, since our timeout is 5 seconds for them, but clients wait 10-15. Also allow slightly more timeouts per resolver when an exit has multiple resolvers configured. Fixes bug 21394; bugfix on 0.3.1.9. o Minor bugfixes (fallback directory mirrors): - Make updateFallbackDirs.py search harder for python. (Some OSs don't put it in /usr/bin.) Fixes bug 24708; bugfix on 0.2.8.1-alpha. o Minor bugfixes (hibernation, bandwidth accounting, shutdown): - When hibernating, close connections normally and allow them to flush. Fixes bug 23571; bugfix on 0.2.4.7-alpha. Also fixes bug 7267. - Do not attempt to launch self-reachability tests when entering hibernation. Fixes a case of bug 12062; bugfix on 0.0.9pre5. - Resolve several bugs related to descriptor fetching on bridge clients with bandwidth accounting enabled. (This combination is not recommended!) Fixes a case of bug 12062; bugfix on 0.2.0.3-alpha. - When hibernating, do not attempt to launch DNS checks. Fixes a case of bug 12062; bugfix on 0.1.2.2-alpha. - When hibernating, do not try to upload or download descriptors. Fixes a case of bug 12062; bugfix on 0.0.9pre5. o Minor bugfixes (IPv6, bridges): - Tor now always sets IPv6 preferences for bridges. Fixes bug 24573; bugfix on 0.2.8.2-alpha. - Tor now sets IPv6 address in the routerstatus as well as in the router descriptors when updating addresses for a bridge. Closes ticket 24572; bugfix on 0.2.4.5-alpha. Patch by "ffmancera". o Minor bugfixes (Linux seccomp2 sandbox): - When running with the sandbox enabled, reload configuration files correctly even when %include was used. Previously we would crash. Fixes bug 22605; bugfix on 0.3.1. Patch from Daniel Pinto. o Minor bugfixes (Linux seccomp2 sandbox, backport from 0.3.4.1-alpha): - Allow the nanosleep() system call, which glibc uses to implement sleep() and usleep(). Fixes bug 24969; bugfix on 0.2.5.1-alpha. o Minor bugfixes (logging): - Fix a (mostly harmless) race condition when invoking LOG_PROTOCOL_WARN message from a subthread while the torrc options are changing. Fixes bug 23954; bugfix on 0.1.1.9-alpha. o Minor bugfixes (man page, SocksPort): - Remove dead code from the old "SocksSocket" option, and rename SocksSocketsGroupWritable to UnixSocksGroupWritable. The old option still works, but is deprecated. Fixes bug 24343; bugfix on 0.2.6.3. o Minor bugfixes (memory leaks): - Avoid possible at-exit memory leaks related to use of Libevent's event_base_once() function. (This function tends to leak memory if the event_base is closed before the event fires.) Fixes bug 24584; bugfix on 0.2.8.1-alpha. - Fix a harmless memory leak in tor-resolve. Fixes bug 24582; bugfix on 0.2.1.1-alpha. o Minor bugfixes (network IPv6 test): - Tor's test scripts now check if "ping -6 ::1" works when the user runs "make test-network-all". Fixes bug 24677; bugfix on 0.2.9.3-alpha. Patch by "ffmancera". o Minor bugfixes (networking): - string_is_valid_hostname() will not consider IP strings to be valid hostnames. Fixes bug 25055; bugfix on Tor 0.2.5.5. o Minor bugfixes (onion service v3): - Avoid an assertion failure when the next onion service descriptor rotation type is out of sync with the consensus's valid-after time. Instead, log a warning message with extra information, so we can better hunt down the cause of this assertion. Fixes bug 25306; bugfix on 0.3.2.1-alpha. o Minor bugfixes (onion service, backport from 0.3.4.1-alpha): - Fix a memory leak when a v3 onion service is configured and gets a SIGHUP signal. Fixes bug 25901; bugfix on 0.3.2.1-alpha. - When parsing the descriptor signature, look for the token plus an extra white-space at the end. This is more correct but also will allow us to support new fields that might start with "signature". Fixes bug 26069; bugfix on 0.3.0.1-alpha. o Minor bugfixes (onion services): - If we are configured to offer a single onion service, don't log long-term established one hop rendezvous points in the heartbeat. Fixes bug 25116; bugfix on 0.2.9.6-rc. o Minor bugfixes (performance): - Reduce the number of circuits that will be opened at once during the circuit build timeout phase. This is done by increasing the idle timeout to 3 minutes, and lowering the maximum number of concurrent learning circuits to 10. Fixes bug 24769; bugfix on 0.3.1.1-alpha. - Avoid calling protocol_list_supports_protocol() from inside tight loops when running with cached routerinfo_t objects. Instead, summarize the relevant protocols as flags in the routerinfo_t, as we do for routerstatus_t objects. This change simplifies our code a little, and saves a large amount of short-term memory allocation operations. Fixes bug 25008; bugfix on 0.2.9.4-alpha. o Minor bugfixes (performance, timeouts): - Consider circuits for timeout as soon as they complete a hop. This is more accurate than applying the timeout in circuit_expire_building() because that function is only called once per second, which is now too slow for typical timeouts on the current network. Fixes bug 23114; bugfix on 0.2.2.2-alpha. - Use onion service circuits (and other circuits longer than 3 hops) to calculate a circuit build timeout. Previously, Tor only calculated its build timeout based on circuits that planned to be exactly 3 hops long. With this change, we include measurements from all circuits at the point where they complete their third hop. Fixes bug 23100; bugfix on 0.2.2.2-alpha. o Minor bugfixes (relay, crash, backport from 0.3.4.1-alpha): - Avoid a crash when running with DirPort set but ORPort tuned off. Fixes a case of bug 23693; bugfix on 0.3.1.1-alpha. o Minor bugfixes (Rust FFI): - Fix a minor memory leak which would happen whenever the C code would call the Rust implementation of protover_get_supported_protocols(). This was due to the C version returning a static string, whereas the Rust version newly allocated a CString to pass accross the FFI boundary. Consequently, the C code was not expecting to need to free() what it was given. Fixes bug 25127; bugfix on 0.3.2.1-alpha. o Minor bugfixes (spelling): - Use the "misspell" tool to detect and fix typos throughout the source code. Fixes bug 23650; bugfix on various versions of Tor. Patch from Deepesh Pathak. o Minor bugfixes (testing): - Avoid intermittent test failures due to a test that had relied on onion service introduction point creation finishing within 5 seconds of real clock time. Fixes bug 25450; bugfix on 0.3.1.3-alpha. - Give out Exit flags in bootstrapping networks. Fixes bug 24137; bugfix on 0.2.3.1-alpha. o Minor bugfixes (unit test, monotonic time): - Increase a constant (1msec to 10msec) in the monotonic time test that makes sure the nsec/usec/msec times read are synchronized. This change was needed to accommodate slow systems like armel or when the clock_gettime() is not a VDSO on the running kernel. Fixes bug 25113; bugfix on 0.2.9.1. o Code simplification and refactoring: - Move the list of default directory authorities to its own file. Closes ticket 24854. Patch by "beastr0". - Remove the old (deterministic) directory retry logic entirely: We've used exponential backoff exclusively for some time. Closes ticket 23814. - Remove the unused nodelist_recompute_all_hsdir_indices(). Closes ticket 25108. - Remove a series of counters used to track circuit extend attempts and connection status but that in reality we aren't using for anything other than stats logged by a SIGUSR1 signal. Closes ticket 25163. - Remove /usr/athena from search path in configure.ac. Closes ticket 24363. - Remove duplicate code in node_has_curve25519_onion_key() and node_get_curve25519_onion_key(), and add a check for a zero microdesc curve25519 onion key. Closes ticket 23966, patch by "aruna1234" and teor. - Rewrite channel_rsa_id_group_set_badness to reduce temporary memory allocations with large numbers of OR connections (e.g. relays). Closes ticket 24119. - Separate the function that deletes ephemeral files when Tor stops gracefully. - Small changes to Tor's buf_t API to make it suitable for use as a general-purpose safe string constructor. Closes ticket 22342. - Switch -Wnormalized=id to -Wnormalized=nfkc in configure.ac to avoid source code identifier confusion. Closes ticket 24467. - The tor_git_revision[] constant no longer needs to be redeclared by everything that links against the rest of Tor. Done as part of ticket 23845, to simplify our external API. - We make extend_info_from_node() use node_get_curve25519_onion_key() introduced in ticket 23577 to access the curve25519 public keys rather than accessing it directly. Closes ticket 23760. Patch by Neel Chauhan. - Add a function to log channels' scheduler state changes to aid debugging efforts. Closes ticket 24531. o Documentation: - Improved the documentation of AccountingStart parameter. Closes ticket 23635. - Update the documentation for "Log" to include the current list of logging domains. Closes ticket 25378. - Add documentation on how to build tor with Rust dependencies without having to be online. Closes ticket 22907; bugfix on 0.3.0.3-alpha. - Clarify the behavior of RelayBandwidth{Rate,Burst} with client traffic. Closes ticket 24318. - Document that OutboundBindAddress doesn't apply to DNS requests. Closes ticket 22145. Patch from Aruna Maurya. o Code simplification and refactoring (channels): - Remove the incoming and outgoing channel queues. These were never used, but still took up a step in our fast path. - The majority of the channel unit tests have been rewritten and the code coverage has now been raised to 83.6% for channel.c. Closes ticket 23709. - Remove other dead code from the channel subsystem: All together, this cleanup has removed more than 1500 lines of code overall and adding very little except for unit test. o Code simplification and refactoring (circuit rendezvous): - Split the client-side rendezvous circuit lookup into two functions: one that returns only established circuits and another that returns all kinds of circuits. Closes ticket 23459. o Code simplification and refactoring (controller): - Make most of the variables in networkstatus_getinfo_by_purpose() const. Implements ticket 24489. o Documentation (backport from 0.3.4.1-alpha): - Correct an IPv6 error in the documentation for ExitPolicy. Closes ticket 25857. Patch from "CTassisF". o Documentation (man page): - The HiddenServiceVersion torrc option accepts only one number: either version 2 or 3. Closes ticket 25026; bugfix on 0.3.2.2-alpha. o Documentation (manpage, denial of service): - Provide more detail about the denial-of-service options, by listing each mitigation and explaining how they relate. Closes ticket 25248.

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Tor Browser 7.5.4 is released
by Nicolas Vigier 09 May '18

09 May '18

Tor Browser 7.5.4 is now available from the Tor Browser Project page [1] and also from our distribution directory [2]. 1: https://www.torproject.org/download/download-easy.html 2: https://www.torproject.org/dist/torbrowser/7.5.4/ This release features important security updates [3] to Firefox. 3: https://www.mozilla.org/en-US/security/advisories/mfsa2018-12/ This release updates Firefox to 52.8.0esr, HTTPS Everywhere to 2018.4.11, and NoScript to 5.1.8.5. In addition, we exempt .onion domains from mixed content warnings [4], fixed a fingerprinting issue and an issue with localized content. 4: https://trac.torproject.org/projects/tor/ticket/23439 The full changelog since Tor Browser 7.5.3 is: * All platforms * Update Firefox to 52.8.0esr * Update HTTPS Everywhere to 2018.4.11 * Update NoScript to 5.1.8.5 * Bug 23439: Exempt .onion domains from mixed content warnings * Bug 22614: Make e10s/non-e10s Tor Browsers indistinguishable * Bug 22659: Changes to `intl.accept.languages` get overwritten after restart * Bug 25973: Backport off-by-one fix (bug 1352073) * Bug 25020: Add a tbb_version.json file

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Tor Browser 7.5.3 is released
by Nicolas Vigier 26 Mar '18

26 Mar '18

Tor Browser 7.5.3 is now available from the Tor Browser Project page [1] and also from our distribution directory [2]. 1: https://www.torproject.org/download/download-easy.html 2: https://www.torproject.org/dist/torbrowser/7.5.3/ This release features important security updates [3] to Firefox. 3: https://www.mozilla.org/en-US/security/advisories/mfsa2018-10/ This release updates Firefox to 52.7.3esr. In addition, we are updating HTTPS Everywhere to 2018.3.13. The full changelog since Tor Browser 7.5.2 is: * All platforms * Update Firefox to 52.7.3esr * Update HTTPS Everywhere to 2018.3.13 * Bug 25339: Adapt build system for Python 3.6 based build procedure

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Tor Browser 7.5.2 is released
by Georg Koppen 17 Mar '18

17 Mar '18

Hi all! Tor Browser 7.5.2 is now available from the Tor Browser Project page [1] and also from our distribution directory [2]. 1: https://www.torproject.org/download/download-easy.html 2: https://www.torproject.org/dist/torbrowser/7.5.2/ This release features important security updates [3] to Firefox. 3: https://www.mozilla.org/en-US/security/advisories/mfsa2018-08/ Note: Users of the Tor Browser alpha series are strongly encouraged to use the stable series while we are preparing a new alpha release. The full changelog since Tor Browser 7.5.1 is: * All platforms * Update Firefox to 52.7.2esr Georg

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