Tor Browser 11.5.8 is now available from the Tor Browser download page and also from our distribution directory.

- https://dist.torproject.org/torbrowser/11.5.8/

This release will not be published on Google Play due to their target API level requirements. Assuming we do not run into any major problems, Tor Browser 11.5.9 will be an Android-only release that fixes this issue.

Tor Browser 11.5.8 backports the following security updates from Firefox ESR 102.5 to Firefox ESR 91.13 on Windows, macOS and Linux:

CVE-2022-43680: In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations. CVE-2022-45403: Service Workers might have learned size of cross-origin media files CVE-2022-45404: Fullscreen notification bypass CVE-2022-45405: Use-after-free in InputStream implementation CVE-2022-45406: Use-after-free of a JavaScript Realm CVE-2022-45408: Fullscreen notification bypass via windowName CVE-2022-45409: Use-after-free in Garbage Collection CVE-2022-45410: ServiceWorker-intercepted requests bypassed SameSite cookie policy CVE-2022-45411: Cross-Site Tracing was possible via non-standard override headers CVE-2022-45412: Symlinks may resolve to partially uninitialized buffers CVE-2022-45416: Keystroke Side-Channel Leakage CVE-2022-45420: Iframe contents could be rendered outside the iframe CVE-2022-45421: Memory safety bugs fixed in Firefox 107 and Firefox ESR 102.5

Tor Browser 11.5.8 updates GeckoView on Android to Firefox ESR 102.5 and includes important security updates. Tor Browser 11.5.8 backports the following security updates from Firefox 107 to Firefox ESR 102.5 on Android:

CVE-2022-45413: SameSite=Strict cookies could have been sent cross-site via intent URLs

The full changelog since Tor Browser 11.5.7 is:

All Platforms Update Translations Update OpenSSL to 1.1.1s Update NoScript to 11.4.12 Update tor to 0.4.7.11 Update zlib to 1.2.13 Bug tor-browser-build#40622: Update obfs4proxy to 0.0.14 in Tor Browser Windows + macOS + Linux Bug tor-browser#31064: Letterboxing is enabled in priviledged contexts too Bug tor-browser#32411: Consider adding about:tor and others to the list of pages that do not need letterboxing Bug tor-browser#41413: Backup intl.locale.requested in 11.5.x Bug tor-browser#41434: Letterboxing bypass through secondary tab (popup/popunder...) Bug tor-browser#41456: Backport ESR 102.5 security fixes to 91.13-based Tor Browser Bug tor-browser#41460: Migrate new identity and security level preferences in 11.5.8 Bug tor-browser#41463: Backport fix for CVE-2022-43680 Android Update GeckoView to 102.5.0esr Bug tor-browser#41461: Backport Android-specific 107-rr security fixes to 102.5-esr based Geckoview Build All Platforms Update Go to 1.18.8 Bug tor-browser-build#40658: Create an anticensorship team keyring Bug tor-browser-build#40690: Revert fix for zlib build break