tbb-7.0

Tor Browser 7.0a3 is released

Update (Apr 24 8:36 UTC): Thanks to all for testing this alpha release so far. It turns out there are a number of issues that are affecting a lot of our alpha users. The following list should give an overview and help to avoid duplicate bug reports:

  • Tor Browser is crashing when opening/downloading files that need an external application to handle them. This is bug 21766.
  • Tor Browser is crashing on about:addons with the security slider set to "high" and does not show any preferences on about:preferences ticked. This issue is tracked in bug 21962.
  • The canvas prompt is not shown anymore in Tor Browser. This issue is tracked in bug 21778.
  • There is no sound on Linux systems without PulseAudio anymore. This is bug 1247056. Check this one out for Mozilla's reasoning behind dropping ALSA support.

Tor Browser 7.0a3 is now available from the Tor Browser Project page and also from our distribution directory.

This release features important security updates to Firefox.

This is the first alpha release which is based on Firefox ESR 52. We updated all of our patches that did not get upstreamed yet and made Torbutton and Tor Launcher multiprocess (e10s) compatible. After the first nightly build based on ESR52 went out we already fixed a number of bugs associated with this switch. But more remain, please help!

We hope having e10s and Mozilla's content sandbox enabled will be one of the major new features in the upcoming Tor Browser 7.0 series, both security- and performance-wise. While we are still working on the sandboxing part for Windows, both Linux and macOS have e10s and content sandboxing enabled by default in Tor Browser 7.0a3. There are already a number of bugs related to that on our radar which can be found on our bug tracker and which are tagged with the `tbb-e10s` keyword. If you find more, please report them!

The switch to Firefox ESR 52 raises the system requirements for Tor Browser on Windows and macOS. Computers running Windows and are not SSE2-capable are not supported anymore. On Apple computers with OS X < 10.9 Tor Browser won't run anymore either. Update (Apr 24 8:41 UTC): Only the browser part of Tor Browser is affected by these new constraints. If you are e.g. on Windows and are using the expert bundle or are extracting tor from Tor Browser it should run on any computer it used to run. The same holds for macOS with one exception: tor we ship in Tor Browser won't run on Apple computers with OS X 10.6 anymore either.

We updated our toolchains during the ESR transition as well. In particular we retired the old GCC-based one for our macOS cross-compilation and rely solely on clang/cctools now. As with previous releases building 7.0a3 is fully reproducible on all three supported platforms, even though we needed to deploy a last minute patch for Linux bundles this time.

Apart from switching to the new ESR and dealing with related issues we included a new Tor alpha (0.3.0.5-rc) and updated our NoScript (5.0.2) and HTTPS-Everywhere versions (5.2.14). The Sandboxed Tor Browser for Linux got updated to 0.0.6 making sure it is compatible with Firefox ESR 52.

As in Tor Browser 6.5.2 we provide a fix for Tor Browser crashing on github.com on Windows and for Twitter issues that got reported already a while ago. We update our security slider as well taking newer JIT preferences into account.

A note to Windows users: We signed the .exe files with a new codesigning certificate as the old one is about to expire. If there are issues with that new certificate, e.g. scary warnings showing up after downloading a Tor Browser .exe file and double-clicking on it, please let us know.

The full changelog since Tor Browser 7.0a2 is:

  • All Platforms
    • Update Firefox to 52.1.0esr
    • Tor to 0.3.0.5-rc
    • Update Torbutton to 1.9.7.2
      • Bug 21865: Update our JIT preferences in the security slider
      • Bug 21747: Make 'New Tor Circuit for this Site' work in ESR52
      • Bug 21745: Fix handling of catch-all circuit
      • Bug 21547: Fix circuit display under e10s
      • Bug 21268: e10s compatibility for New Identity
      • Bug 21267: Remove window resize implementation for now
      • Bug 21201: Make Torbutton multiprocess compatible
      • Translations update
    • Update Tor Launcher to 0.2.12
      • Bug 21920: Don't show locale selection dialog
      • Bug 21546: Mark Tor Launcher as multiprocess compatible
      • Bug 21264: Add a README file
      • Translations update
    • Update HTTPS-Everywhere to 5.2.14
    • Update NoScript to 5.0.2
    • Update sandboxed-tor-browser to 0.0.6
      • Bug 21764: Use bubblewrap's `--die-with-parent` when supported
      • Fix e10s Web Content crash on systems with grsec kernels
      • Bug 21928: Force a reinstall if an existing hardened bundle is present
      • Bug 21929: Remove hardened/ASAN related code
      • Bug 21927: Remove the ability to install/update the hardened bundle
      • Bug 21244: Update the MAR signing key for 7.0
      • Bug 21536: Remove asn's scramblesuit bridge from Tor Browser
      • Add back old MAR signing key to not break updating Tor Browser stable
      • Add `prlimit64` to the firefox system call whitelist
      • Fix compilation with Go 1.8
      • Use Config.Clone() to clone TLS configs when available
    • Update Go to 1.7.5 (bug 21709)
    • Bug 21555+16450: Don't remove Authorization header on subdomains (e.g. Twitter)
    • Bug 21887: Fix broken error pages on higher security levels
    • Bug 21876: Enable e10s by default on all supported platforms
    • Bug 21876: Always use esr policies for e10s
    • Bug 20905: Fix resizing issues after moving to a direct Firefox patch
    • Bug 21875: Modal dialogs are maximized in ESR52 nightly builds
    • Bug 21885: SVG is not disabled in Tor Browser based on ESR52
    • Bug 17334: Hide Referer when leaving a .onion domain (improved patch)
    • Bug 3246: Double-key cookies
    • Bug 8842: Fix XML parsing error
    • Bug 16886: 16886: "Add-on compatibility check dialog" contains Firefox logo
    • Bug 19192: Untrust Blue Coat CA
    • Bug 19955: Avoid confusing warning that favicon load request got cancelled
    • Bug 20005: Backport fixes for memory leaks investigation
    • Bug 20755: ltn.com.tw is broken in Tor Browser
    • Bug 21896: Commenting on website is broken due to CAPTCHA not being displayed
    • Bug 20680: Rebase Tor Browser patches to 52 ESR
    • Bug 21917: Add new obfs4 bridges
    • Bug 21918: Move meek-amazon to d2cly7j4zqgua7.cloudfront.net backend
  • Windows
    • Bug 21795: Fix Tor Browser crashing on github.com
    • Bug 12426: Make use of HeapEnableTerminationOnCorruption
    • Bug 19316: Make sure our Windows updates can deal with the SSE2 requirement
    • Bug 21868: Fix build bustage with FIREFOX_52_0_2esr_RELEASE for Windows
  • OS X
    • Bug 21723: Fix inconsistent generation of MOZ_MACBUNDLE_ID
    • Bug 21724: Make Firefox and Tor Browser distinct macOS apps
    • Bug 21931: Backport OSX SetupMacCommandLine updater fixes
    • Bug 15910: Don't download GMPs via the local fallback
  • Linux
    • Bug 21907: Fix runtime error on CentOS 6
    • Bug 21748: Fix broken Snowflake build and update bridge details
    • Bug 21954: Snowflake breaks the 7.0a3 build
    • Bug 15910: Don't download GMPs via the local fallback
  • Build system
    • Windows
      • Bug 21837: Fix reproducibility of accessibility code for Windows
      • Bug 21240: Create patches to fix mingw-w64 compilation of Firefox ESR 52
      • Bug 21904: Bump mingw-w64 commit to help with sandbox compilation
      • Bug 18831: Use own Yasm for Firefox cross-compilation
    • OS X
      • Bug 21328: Updating to clang 3.8.0
      • Bug 21754: Remove old GCC toolchain and macOS SDK
      • Bug 19783: Remove unused macOS helper scripts
      • Bug 10369: Don't use old GCC toolchain anymore for utils
      • Bug 21753: Replace our old GCC toolchain in PT descriptor
      • Bug 18530: ESR52 based Tor Browser only runs on macOS 10.9+
    • Linux
      • Bug 21930: NSS libraries are missing from mar-tools archive
      • Bug 21239: Adapt Linux Firefox descriptor to ESR52 (use GTK2)
      • Bug 21960: Linux bundles based on ESR 52 are not reproducible anymore
      • Bug 21629: Fix broken ASan builds when switching to ESR 52

Tor Browser 7.0a2-hardened is released

A new hardened Tor Browser release is available. It can be found in the 7.0a2-hardened distribution directory and on the download page for hardened builds.

This release features important security updates to Firefox.

This hardened alpha release mainly contains updates to several of our Tor Browser components: Firefox got updated to 45.8.0esr, Tor to 0.3.0.4-rc, OpenSSL to 1.0.2k, and HTTPS-Everywhere to 5.2.11.

Additionally, we updated the bridges we ship with Tor Browser and fixed some regressions that came with our last release.

In the previous release we introduced filtering of content requests to resource:// and chrome:// URIs in order to neuter a fingerprinting vector. This change however breaks the Session Manager addon. Users who think having extensions like that one working is much more important than avoiding the possible information leakage associated with that can now toggle the 'extensions.torbutton.resource_and_chrome_uri_fingerprinting' preference, setting it to 'true' to disable our defense against this type of fingerprinting.

Another known regression is the resizing of the window. We are currently working on a fix for this issue.

The full changelog since Tor Browser 7.0a1-hardened is:

  • All Platforms
    • Update Firefox to 45.8.0esr
    • Tor to 0.3.0.4-rc
    • OpenSSL to 1.0.2k
    • Update Torbutton to 1.9.7.1
      • Bug 21396: Allow leaking of resource/chrome URIs (off by default)
      • Bug 21574: Add link for zh manual and create manual links dynamically
      • Bug 21330: Non-usable scrollbar appears in tor browser security settings
      • Bug 21324: Don't update NoScript button with timer update
      • Translation updates
    • Update HTTPS-Everywhere to 5.2.11
    • Bug 21514: Restore W^X JIT implementation removed from ESR45
    • Bug 21536: Remove scramblesuit bridge
    • Bug 21342: Move meek-azure to the meek.azureedge.net backend and cymrubridge02 bridge
    • Bug 21326: Update the "Using a system-installed Tor" section in start script
  • Build system
    • Bug 17034: Use our built binutils and GCC for building tor
    • Code clean-up

Tor Browser 7.0a2 is released

Tor Browser 7.0a2 is now available from the Tor Browser Project page and also from our distribution directory.

This release features important security updates to Firefox.

This alpha release mainly contains updates to several of our Tor Browser components: Firefox got updated to 45.8.0esr, Tor to 0.3.0.4-rc, OpenSSL to 1.0.2k, and HTTPS-Everywhere to 5.2.11.

Additionally, we updated the bridges we ship with Tor Browser and fixed some regressions that came with our last release.

In the previous release we introduced filtering of content requests to resource:// and chrome:// URIs in order to neuter a fingerprinting vector. This change however breaks the Session Manager addon. Users who think having extensions like that one working is much more important than avoiding the possible information leakage associated with that can now toggle the 'extensions.torbutton.resource_and_chrome_uri_fingerprinting' preference, setting it to 'true' to disable our defense against this type of fingerprinting.

Another known regression is the resizing of the window. We are currently working on a fix for this issue.

The full changelog since Tor Browser 7.0a1 is:

  • All Platforms
    • Update Firefox to 45.8.0esr
    • Tor to 0.3.0.4-rc
    • OpenSSL to 1.0.2k
    • Update Torbutton to 1.9.7.1
      • Bug 21396: Allow leaking of resource/chrome URIs (off by default)
      • Bug 21574: Add link for zh manual and create manual links dynamically
      • Bug 21330: Non-usable scrollbar appears in tor browser security settings
      • Bug 21324: Don't update NoScript button with timer update
      • Translation updates
    • Update HTTPS-Everywhere to 5.2.11
    • Bug 21514: Restore W^X JIT implementation removed from ESR45
    • Bug 21536: Remove scramblesuit bridge
    • Bug 21342: Move meek-azure to the meek.azureedge.net backend and cymrubridge02 bridge
    • Bug 21348: Make snowflake only available on Linux for now
  • Linux
    • Bug 21326: Update the "Using a system-installed Tor" section in start script
  • Build system
    • OS X
      • Bug 21343: Remove unused FTE related parts for macOS
    • Linux
      • Bug 17034: Use our built binutils and GCC for building tor
      • Clean-up

Tor Browser 7.0a1-hardened is released

A new hardened Tor Browser release is available. It can be found in the 7.0a1-hardened distribution directory and on the download page for hardened builds.

This release features important security updates to Firefox.

Tor Browser 7.0a1-hardened is the first hardened alpha in the 7.0 series. Apart from the usual Firefox update (to 45.7.0 ESR) it contains the first alpha in the tor 0.3.0 series (0.3.0.1-alpha) and an updated HTTPS-Everywhere (5.2.9) + NoScript (2.9.5.3).

Tor Browser 7.0a1-hardened is the first hardened alpha allowing Linux users to test Snowflake, a new WebRTC-based pluggable transport.

The full changelog since 6.5a6-hardened is:

  • All Platforms
    • Update Firefox to 45.7.0esr
    • Tor to 0.3.0.2-alpha
    • Update Torbutton to 1.9.7
      • Bug 19898: Use DuckDuckGo on about:tor
      • Bug 21091: Hide the update check menu entry when running under the sandbox
      • Bug 21243: Add links to es, fr, and pt Tor Browser manual
      • Bug 21194: Show snowflake in the circuit display
      • Bug 21131: Remove 2016 donation banner
      • Translation updates
    • Update HTTPS-Everywhere to 5.2.9
    • Update NoScript to 2.9.5.3
    • Bug 20471: Allow javascript: links from HTTPS first party pages
    • Bug 20651: DuckDuckGo does not work with JavaScript disabled
    • Bug 20589: Add new MAR signing key
    • Bug 20735: Add snowflake pluggable transport to alpha Linux builds
  • Build system
    • All platforms

Tor Browser 7.0a1 is released

Tor Browser 7.0a1 is now available from the Tor Browser Project page and also from our distribution directory.

This release features important security updates to Firefox.

Tor Browser 7.0a1 is the first alpha in the 7.0 series. Apart from the usual Firefox update (to 45.7.0 ESR) it contains the first alpha in the tor 0.3.0 series (0.3.0.1-alpha) and an updated HTTPS-Everywhere (5.2.9) + NoScript (2.9.5.3).

Tor Browser 7.0a1 is the first alpha allowing Linux users to test Snowflake, a new WebRTC-based pluggable transport. Additionally, we include bug fixes both to our sandboxing solutions for Linux (sandboxed-tor-browser 0.0.3) and macOS. For Windows users we plugged a timezone leak that got introduced by enabling ICU in Firefox when switching to ESR 45.

The full changelog since 6.5a6 is:

  • All Platforms
    • Update Firefox to 45.7.0esr
    • Tor to 0.3.0.2-alpha
    • Update Torbutton to 1.9.7
      • Bug 19898: Use DuckDuckGo on about:tor
      • Bug 21091: Hide the update check menu entry when running under the sandbox
      • Bug 21243: Add links to es, fr, and pt Tor Browser manual
      • Bug 21194: Show snowflake in the circuit display
      • Bug 21131: Remove 2016 donation banner
      • Translation updates
    • Update HTTPS-Everywhere to 5.2.9
    • Update NoScript to 2.9.5.3
    • Bug 20471: Allow javascript: links from HTTPS first party pages
    • Bug 20651: DuckDuckGo does not work with JavaScript disabled
    • Bug 20589: Add new MAR signing key
  • Windows
    • Bug 20981: On Windows, check TZ for timezone first
  • OS X
    • Bug 20989: Browser sandbox profile is too restrictive on OSX 10.12.2
  • Linux
    • Update sandboxed-tor-browser to 0.0.3
    • Bug 20735: Add snowflake pluggable transport to alpha Linux builds
  • Build system
    • All platforms
    • Linux
      • Bug 21103: Update descriptors for sandboxed-tor-browser 0.0.3
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