tor browser bundle

Tor Browser 5.0.7 is released

Update: Clarify that the crash bug requires Javascript to be exercised.

A new stable release for Tor Browser is available from the Tor Browser Project page and also from our distribution directory.

This release features an important fix for a crash bug in one of our patches. All users are encouraged to update immediately as this bug is probably exploitable if Javascript is enabled. The bug was not exploitable at High security level, or on non-HTTPS websites at Medium-High security level.

Here is the complete changelog since 5.0.6:

  • All Platforms
    • Update NoScript to 2.9
    • Update HTTPS Everywhere to 5.1.2
    • Bug 17931: Tor Browser crashes in LogMessageToConsole()
    • Bug 17875: Discourage editing of torrc-defaults

Tor Browser 5.0.6 is released

A new stable release for Tor Browser is available from the Tor Browser Project page and also from our distribution directory.

This release features important security updates to Firefox which we missed in our update to Tor Browser 5.0.5. We are sorry for this inconvenience.

This change is the only one in the changelog since 5.0.5:

  • All Platforms
    • Bug 17877: Tor Browser 5.0.5 is using the wrong Mozilla build tag

The changes made in 5.0.5 are the following:

  • All Platforms
    • Update Firefox to 38.5.0esr
    • Update Tor to 0.2.7.6
    • Update OpenSSL to 1.0.1q
    • Update NoScript to 2.7
    • Update HTTPS Everywhere to 5.1.1
    • Update Torbutton to 1.9.3.7
      • Bug 16990: Avoid matching '250 ' to the end of node name
      • Bug 17565: Tor fundraising campaign donation banner
      • Bug 17770: Fix alignments on donation banner
      • Bug 17792: Include donation banner in some non en-US Tor Browsers
      • Translation updates
    • Bug 17207: Hide MIME types and plugins from websites
    • Bug 16909+17383: Adapt to HTTPS-Everywhere build changes
    • Bug 16863: Avoid confusing error when loop.enabled is false
    • Bug 17502: Add a preference for hiding "Open with" on download dialog
    • Bug 17446: Prevent canvas extraction by third parties (fixup of #6253)
    • Bug 17747: Add ndnop3 as new default obfs4 bridge

Tor Browser 5.0.5 is released

A new stable release for Tor Browser is available from the Tor Browser Project page and also from our distribution directory.

This release features important security updates to Firefox.

Additionally, we included updated versions for Tor (0.2.7.6), OpenSSL (1.0.1q), NoScript (2.7) and HTTPS-Everywhere (5.1.1). Moreover, we fixed an annoying bug in our circuit display (circuits weren't visible sometimes) and improved our fingerprinting defense against MIME type enumeration.

Tor Browser 5.0.5 comes with a banner supporting our donations campaign. The banner is visible on the about:tor page and features either Roger Dingledine, Laura Poitras or Cory Doctorow which is chosen randomly.

These and all the other changes (minor bug fixes and new features) can be found in the complete changelog since 5.0.4:

  • All Platforms
    • Update Firefox to 38.5.0esr
    • Update Tor to 0.2.7.6
    • Update OpenSSL to 1.0.1q
    • Update NoScript to 2.7
    • Update HTTPS Everywhere to 5.1.1
    • Update Torbutton to 1.9.3.7
      • Bug 16990: Avoid matching '250 ' to the end of node name
      • Bug 17565: Tor fundraising campaign donation banner
      • Bug 17770: Fix alignments on donation banner
      • Bug 17792: Include donation banner in some non en-US Tor Browsers
      • Translation updates
    • Bug 17207: Hide MIME types and plugins from websites
    • Bug 16909+17383: Adapt to HTTPS-Everywhere build changes
    • Bug 16863: Avoid confusing error when loop.enabled is false
    • Bug 17502: Add a preference for hiding "Open with" on download dialog
    • Bug 17446: Prevent canvas extraction by third parties (fixup of #6253)
    • Bug 16441: Suppress "Reset Tor Browser" prompt
    • Bug 17747: Add ndnop3 as new default obfs4 bridge

Tor Browser 5.0.4 is released

A new stable release for Tor Browser is available from the Tor Browser Project page and also from our distribution directory.

This release features important security updates to Firefox.

Additionally, we included Yan Zhu's fix for not leaking the Referer header when leaving a .onion domain and are shipping an updated NoScript version.

These and all the other changes (minor bug fixes and clean-ups) can be found in the complete changelog since 5.0.3:

  • All Platforms
    • Update Firefox to 38.4.0esr
    • Update NoScript to 2.6.9.39
    • Update Torbutton to 1.9.3.5
      • Bug 9623: Spoof Referer when leaving a .onion domain
      • Bug 16735: about:tor should accommodate different fonts/font sizes
      • Bug 16937: Don't translate the homepage/spellchecker dictionary string
      • Bug 17164: Don't show text-select cursor on circuit display
      • Bug 17351: Remove unused code
      • Translation updates
    • Bug 16937: Remove the en-US dictionary from non en-US Tor Browser bundles
    • Bug 17318: Remove dead ScrambleSuit bridge
    • Bug 17473: Update meek-amazon fingerprint
    • Bug 16983: Isolate favicon requests caused by the tab list dropdown
    • Bug 17102: Don't crash while opening a second Tor Browser
  • Windows
    • Bug 16906: Don't depend on Windows crypto DLLs
  • Linux
    • Bug 17329: Ensure that non-ASCII characters can be typed (fixup of #5926)

Tor Browser 5.0.3 is released

A new stable release for Tor Browser is available from the Tor Browser Project page and also from our distribution directory.

This release features important security updates to Firefox.

We fixed a number of regressions from our switch to ESR 38 back in August and reduced keyboard layout fingerprinting to mention just some highlights.

These and all the other changes can be found in the complete changelog since 5.0.2:

  • All Platforms
    • Update Firefox to 38.3.0esr
    • Update Torbutton to 1.9.3.4
      • Bug 16887: Update intl.accept_languages value
      • Bug 15493: Update circuit display on new circuit info
      • Bug 16797: brandShorterName is missing from brand.properties
      • Bug 14429: Make sure the automatic resizing is disabled
      • Translation updates
    • Bug 7446: Tor Browser should not "fix up" .onion domains (or any domains)
    • Bug 16837: Disable Firefox Hotfix updates
    • Bug 16855: Allow blobs to be downloaded on first-party pages (fixes mega.nz)
    • Bug 16781: Allow saving pdf files in built-in pdf viewer
    • Bug 16842: Restore Media tab on Page information dialog
    • Bug 16727: Disable about:healthreport page
    • Bug 16783: Normalize NoScript default whitelist
    • Bug 16775: Fix preferences dialog with security slider set to "High"
    • Bug 13579: Update download progress bar automatically
    • Bug 15646: Reduce keyboard layout fingerprinting in KeyboardEvent
    • Bug 17046: Event.timeStamp should not reveal startup time
    • Bug 16872: Fix warnings when opening about:downloads
    • Bug 17097: Fix intermittent crashes when using the print dialog
  • Windows
    • Bug 16906: Fix Mingw-w64 compilation breakage
  • OS X
    • Bug 16910: Update copyright year in OS X bundles

Tor Browser 5.0.2 is released

A new release for the stable Tor Browser is available from the Tor Browser Project page and also from our distribution directory.

This release features important security updates to Firefox.

Additionally, we updated the NoScript version we ship and included a small fix for Unity and Gnome users on Linux.

Here is the complete changelog since 5.0.1:

  • All Platforms
    • Update Firefox to 38.2.1esr
    • Update NoScript to 2.6.9.36
  • Linux
    • Bug 16860: Avoid duplicate icons on Unity and Gnome

Tor Browser 5.0.1 is released

A new release for the stable Tor Browser is available from the Tor Browser Project page and also from our distribution directory.

This release fixes a crash bug that caused Tor Browser to crash on certain sites (in particular, Google Maps and Tumblr). The crash bug was a NULL pointer dereference while handling blob URIs. The crash was not exploitable.

Here is the complete changelog since 5.0:

  • All Platforms
    • Bug 16771: Fix crash on some websites due to blob URIs

Tor Browser 5.0a4 is released

The Tor Browser Team is proud to announce the second alpha release based on Firefox 38 ESR. This release is also the fourth and final alpha in the 5.0 series. The release is available for download in the 5.0a4 distribution directory and on the alpha download page.

Most notably, this release contains an experimental defense against font fingerprinting by using an identical set of shipped fonts on all supported platforms. We've also updated the versions of several Tor Browser components, including updating Tor to 0.2.7.2-alpha. The 5.0-stable release will be based on Tor 0.2.6-latest, however.

Last but not least we fixed a lot of important bugs that were due to our switch to Firefox 38 ESR, including issues with major websites such as Twitter. This release brings us very close to a stable Tor Browser 5.0, which we aim to release next week. Unless we hear about additional issues, not much will change between 5.0a4 and 5.0-stable, aside from the Tor version and possibly the font defense.

Here is the complete changelog since 5.0a3

  • All Platforms
    • Update Tor to 0.2.7.2-alpha with patches
      • Bug 15482: Don't allow circuits to change while a site is in use
    • Update OpenSSL to 1.0.1p
    • Update HTTPS-Everywhere to 5.0.7
    • Update NoScript to 2.6.9.31
    • Update Torbutton to 1.9.3.1
      • Bug 16268: Show Tor Browser logo on About page
      • Bug 16639: Check for Updates menu item can cause update download failure
      • Bug 15781: Remove the sessionstore filter
      • Bug 15656: Sync privacy.resistFingerprinting with Torbutton pref
      • Translation updates
    • Bug 16884: Prefer IPv6 when supported by the current Tor exit
    • Bug 16488: Remove "Sign in to Sync" from the browser menu
    • Bug 13313: Bundle a fixed set of fonts to defend against fingerprinting
    • Bug 16662: Enable network.http.spdy.* prefs in meek-http-helper
    • Bug 15646: Prevent keyboard layout fingerprinting in KeyboardEvent (fixup)
    • Bug 15703: Isolate mediasource URIs and media streams to first party
    • Bug 16429+16416: Isolate blob URIs to first party
    • Bug 16632: Turn on the background updater and restart prompting
    • Bug 16528: Prevent IndexedDB Modernizr site breakage on Twitter and elsewhere
    • Bug 16523: Fix in-browser JavaScript debugger
    • Bug 16236: Windows updater: avoid writing to the registry
    • Bug 16005: Restrict WebGL minimal mode a bit (fixup)
    • Bug 16625: Fully disable network connection prediction
    • Bug 16495: Fix SVG crash when security level is set to "High"
  • Build System
    • Bug 15864: Rename sha256sums.txt to sha256sums-unsigned-build.txt

Tor Browser 5.0a3 is released

The Tor Browser Team is proud to announce the first alpha released based on Firefox 38 ESR.

As such, this release features many updates to Firefox (including several security updates), as well as to our build system and dependencies. For this release, we performed a thorough network and feature review of Firefox 38, and fixed the most pressing privacy issues, as well as all Tor proxy safety issues that we discovered during the audit.

We also updated our toolchain on OS X to use the OS X 10.7 SDK. For Linux and Windows we switched to GCC 5.1 as our new (cross)-compiler. We are therefore especially interested in feedback if there are stability issues or broken Tor Browser bundles due to these toolchain upgrades.

Besides Firefox 38 and build system changes, we also updated several components. Most notably, we bumped OpenSSL to version 1.0.1o, NoScript to version 2.6.9.27 and Torbutton to version 1.9.3.0. Included as well is a backported Tor patch to improve usability on websites, and we fixed a crash bug impacting users with the security slider level set to "High".

Here is the complete changelog since 5.0a2

  • All Platforms
    • Update Firefox to 38.1.0esr
    • Update OpenSSL to 1.0.1o
    • Update NoScript to 2.6.9.27
    • Update meek to 0.20
    • Update Torbutton to 1.9.3.0
      • Bug 16403: Set search parameters for Disconnect
      • Bug 14429: Make sure the automatic resizing is enabled
      • Bug 16427: Use internal update URL to block updates (instead of
        127.0.0.1)

      • Bug 16200: Update Cache API usage and prefs for FF38
      • Bug 16357: Use Mozilla API to wipe permissions db
      • Translation updates
    • Update Tor Launcher to 0.2.6.7
      • Bug 16428: Use internal update URL to block updates (instead of
        127.0.0.1)

      • Bug 15145: Visually distinguish "proxy" and "bridge" screens.
      • Translation updates
    • Bug 16430: Allow DNS names with _ characters in them (fixes
      nytimes.com) (Tor patch backport)

    • Bug 13247: Fix meek profile error after bowser restarts
    • Bug 16397: Fix crash related to disabling SVG
    • Bug 16403: Set search parameters for Disconnect
    • Bug 16446: Update FTE bridge #1 fingerprint
    • Bug 15646: Prevent keyboard layout fingerprinting in KeyboardEvent
    • Bug 16005: Relax WebGL minimal mode
    • Bug 16300: Isolate Broadcast Channels to first party
    • Bug 16439: Remove Roku screencasting code
    • Bug 16285: Disabling EME bits
    • Bug 16206: Enforce certificate pinning
    • Bug 13670: Isolate OCSP requests by first party domain
    • Bug 16448: Isolate favicon requests by first party
    • Bug 7561: Disable FTP request caching
    • Bug 6503: Fix single-word URL bar searching
    • Bug 15526: ES6 page crashes Tor Browser
    • Bug 16254: Disable GeoIP-based search results
    • Bug 16222: Disable WebIDE to prevent remote debugging and addon
      downloads.

    • Bug 13024: Disable DOM Resource Timing API
    • Bug 16340: Disable User Timing API
    • Bug 14952: Disable HTTP/2
  • Mac OS
    • Use OSX 10.7 SDK
    • Bug 16253: Tor Browser menu on OS X is broken with ESR 38
  • Build System
    • Bug 16351: Upgrade our toolchain to use GCC 5.1
    • Bug 15772 and child tickets: Update build system for Firefox 38

Tor Browser 4.5.3 is released

A new release for the stable Tor Browser is available from the Tor Browser Project page and also from our distribution directory.

Tor Browser 4.5.3 is based on Firefox ESR 31.8.0, which features important security updates to Firefox.

Moreover, it contains an updated OpenSSL, NoScript and Torbutton, a fix for a crash bug visible with the security slider level set to "High" and a backport of a Tor patch to improve usability on websites.

Here is the complete changelog since 4.5.2:

  • All Platforms
    • Update Firefox to 31.8.0esr
    • Update OpenSSL to 1.0.1o
    • Update NoScript to 2.6.9.27
    • Update Torbutton to 1.9.2.8
      • Bug 16403: Set search parameters for Disconnect
      • Bug 14429: Make sure the automatic resizing is disabled
      • Translation updates
    • Bug 16397: Fix crash related to disabling SVG
    • Bug 16403: Set search parameters for Disconnect
    • Bug 16446: Update FTE bridge #1 fingerprint
    • Bug 16430: Allow DNS names with _ characters in them (fixes
      nytimes.com) (Tor patch backport)
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