[tor-qa] Tor Browser 10.0a5 is ready for testing

Georg Koppen gk at torproject.org
Sun Aug 16 20:39:57 UTC 2020


We are happy to announce that the first alpha for desktop users based on
Firefox 78 ESR is ready for testing. Bundles can be found at:


We announced nightly builds based on ESR 78 a while ago[1] and used the
time since then to adjust our toolchains, finish our proxy audit, and
fix a lot of issues that came down on us due to the switch to this new
major Firefox version on the ESR channel.

Tor Browser 10.0a5 ships with Firefox 78.1.0esr but there are a lot more
changes that we included compared to the previous alpha version. As it
is the first alpha based on the new major ESR version we expect more
bugs than usual. Please report them, either here or on Gitlab[2], or
essentially with any other means that would reach us. We are in
particular interested in potential proxy bypasses which our proxy audit

Here comes the full changelog since 10.0a4:

Tor Browser 10.0a5 -- August 18 2020
 * Windows + OS X + Linux
   * Update Firefox to 78.1.0esr
   * Update Tor to
   * Update Tor Launcher to 0.2.22
     * Bug 32174: Replace XUL <textbox> with <html:input>
     * Bug 33890: Rename XUL files to XHTML
     * Bug 33862: Fix usages of createTransport API
     * Bug 33906: Fix Tor-Launcher issues for Firefox 75
     * Bug 33998: Use CSS grid instead of XUL grid
     * Bug 34164: Tor Launcher deadlocks during startup (Firefox 77)
     * Bug 34206: Tor Launcher button labels are missing (Firefox 76)
     * Translations update
   * Update NoScript to 11.0.37
   * Bug 11154: Disable TLS 1.0 (and 1.1) by default
   * Bug 16931: Sanitize the add-on blocklist update URL
   * Bug 17374: Disable 1024-DH Encryption by default
   * Bug 30682: Disable Intermediate CA Preloading
   * Bug 30812: Exempt about: pages from Resist Fingerprinting
   * Bug 31918+33533+40024+40037: Rebase Tor Browser esr68 patches for
ESR 78 [tor-browser]
   * Bug 32612: Update MAR_CHANNEL_ID for the alpha
   * Bug 32886: Separate treatment of @media interaction features for
desktop and android
   * Bug 33534: Review FF release notes from FF69 to latest (FF78)
   * Bug 33697: Use old search config based on list.json
   * Bug 33721: PDF Viewer is not working in the safest security level
   * Bug 33734: Set MOZ_NORMANDY to False
   * Bug 33737: Fix aboutDialog.js error for Firefox nightlies
   * Bug 33848: Disable Enhanced Tracking Protection
   * Bug 33851: Patch out Parental Controls detection and logging
   * Bug 33852: Clean up about:logins to not mention Sync
   * Bug 33856: Set browser.privatebrowsing.forceMediaMemoryCache to True
   * Bug 33862: Fix usages of createTransport API
   * Bug 33867: Disable password manager and password generation
   * Bug 33890: Rename XUL files to XHTML
   * Bug 33892: Add brandProductName to brand.dtd and brand.properties
   * Bug 33962: Uplift patch for bug 5741 (dns leak protection)
   * Bug 34125: API change in protocolProxyService.registerChannelFilter
   * Bug 40001: Generate tor-browser-brand.ftl when importing
translations [torbutton]
   * Bug 40002: Fix generateNSGetFactory being moved to ComponentUtils
   * Bug 40003: Adapt code for L10nRegistry API changes [torbutton]
   * Bug 40005: Initialize the identity UI before setting up the circuit
display [torbutton]
   * Bug 40016: Update Snowflake to discover NAT type [tor-browser-build]
   * Bug 40017: Audit Firefox 68-78 diff for proxy issues [tor-browser]
   * Bug 40022: Update new icons in Tor Browser branding [tor-browser]
   * Bug 40025: Revert add-on permissions due to Mozilla's 1560059
   * Bug 40036: Remove product version/updatce channel from #13379 patch
   * Bug 40038: Review RemoteSettings for ESR 78 [tor-browser]
   * Bug 40048: Disable various ESR78 features via prefs [tor-browser]
   * Bug 40059: Verify our external helper patch is sill working
   * Bug 40066: Update existing prefs for ESR 78 [tor-browser]
   * Bug 40073: Disable remote Public Suffic List fetching [tor-browser]
   * Bug 40078: Backport patches for bug 1651680 for now [tor-browser]
   * Translations update
 * Windows
   * Bug 33855: Don't use site's icon as window icon in Windows in
private mode
   * Bug 40061: Omit the Windows default browser agent from the build
 * OS X
   * Bug 32252: Tor Browser does not display correctly in VMWare Fusion
on macOS (mojave)
 * Build System
   * All Platforms
     * Bug 31845: Bump GCC version for Linux to 9.3.0
     * Bug 34011: Bump clang to 9.0.1
     * Bug 34014: Enable sqlite3 support in Python
     * Bug 34390: Don't copy DBM libraries anymore
     * Bug 34391: Remove unused --enable-signmar option
     * Bug 40004: Adapt Rust project for Firefox 78 ESR [tor-browser-build]
     * Bug 40005: Adapt Node project for Firefox 78 ESR [tor-browser-build]
     * Bug 40006: Adapt cbindgen for Firefox 78 ESR [tor-browser-build]
     * Bug 40037: Move projects over to clang-source [tor-browser-build]
     * Bug 40026: Fix full .mar creation for esr78 [tor-browser-build]
     * Bug 40027: Fix incremental .mar creation for esr78
     * Bug 40028: Do not reference unset env variables [tor-browser-build]
   * Windows
     * Bug 34230: Update Windows toolchain for Firefox 78 ESR
     * Bug 40015: Use only 64bit fxc2 [tor-browser-build]
     * Bug 40017: Enable stripping again on Windows [tor-browser-build]
     * Bug 40061: Omit the Windows default browser agent from the build
   * OS X
     * Bug 34229: Update macOS toolchain for Firefox 78 ESR
     * Bug 40003: Update cctools version for Firefox 78 ESR
     * Bug 40018: Add libtapi project for cctools [tor-browser-build]
     * Bug 40019: Ship our own runtime library for macOS [tor-browser-build]
   * Linux
     * Bug 34359: Adapt abicheck.cc to deal with newer GCC version
     * Bug 34386: Fix up clang compilation on Linux


[1] https://lists.torproject.org/pipermail/tbb-dev/2020-August/001126.html
[2] https://gitlab.torproject.org

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