[tor-announce] Tor Browser 7.5.1 is released

Nicolas Vigier boklm at mars-attacks.org
Tue Mar 13 17:05:53 UTC 2018

Tor Browser 7.5.1 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/7.5.1/

This release features important security updates [3] to Firefox.

    3: https://www.mozilla.org/en-US/security/advisories/mfsa2018-07/

In addition to security updates to Firefox (52.7.0esr) this release
includes newer versions of Tor ( [4]), NoScript (, and
obfs4proxy (0.0.7).

    4: https://blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-prevention-03210-03110-02915

Moreover, we fixed sandbox incompatibilities for 64bit Windows Vista
users [5] and amended the NoScript whitelist [6], which unbreaks
extension panels on higher security levels.

    5: https://trac.torproject.org/projects/tor/ticket/25112
    6: https://trac.torproject.org/projects/tor/ticket/25000

Note: We did not include the latest HTTPS Everywhere release in
Tor Browser 7.5.1 as we need to first test some changes in its new build
system [7] in an alpha release to make sure we still can build everything
reproducibly. We expect to have this fixed in the next stable release,
though. Sorry for any inconvenience.

    7: https://trac.torproject.org/projects/tor/ticket/25339

The full changelog since Tor Browser 7.5 is:

 * All platforms
   * Update Firefox to 52.7.0esr
   * Update Tor to
   * Update Torbutton to
     * Bug 24159: Version check does not deal with platform specific checks
     * Bug 25016: Remove 2017 donation banner
     * Translations update
   * Update Tor Launcher to
     * Bug 25089: Special characters are not escaped in proxy password
     * Translations update
   * Update NoScript to
   * Bug 25356: Update obfs4proxy to v0.0.7
   * Bug 25000: Add [System+Principal] to the NoScript whitelist
 * Windows
   * Bug 25112: Disable sandboxing on 64-bit Windows <= Vista
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