[tor-bugs] #26982 [Applications/Tor Browser]: TBA - httpclientandroidlib leaks information about Android version

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#26982: TBA - httpclientandroidlib leaks information about Android version
-------------------------------------+-------------------------------------
     Reporter:  sysrqb               |      Owner:  tbb-team
         Type:  defect               |     Status:  new
     Priority:  High                 |  Milestone:
    Component:  Applications/Tor     |    Version:
  Browser                            |   Keywords:  tbb-mobile,
     Severity:  Normal               |  TorBrowserTeam201807
Actual Points:                       |  Parent ID:  #25703
       Points:                       |   Reviewer:
      Sponsor:                       |
-------------------------------------+-------------------------------------
 While reviewing #22170, I noticed Fennec decides which TLS ciphers it
 supports[0] based on a lower-bound of the Android SDK version, and it
 chooses a TLS cipher within that list. This is another example of why we
 should use Necko (via GeckoView) instead of the Android SDK for
 networking.

 This is used by the Java networking in the Sync code[1].

 In the short term, we can always return the `else` clause:
 {{{
     } else {
       DEFAULT_CIPHER_SUITES = new String[]
           {
            "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA",        // 11+
            "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA",      // 11+
            "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA",        // 11+

            // For Sync 1.1.
            "TLS_DHE_RSA_WITH_AES_128_CBC_SHA",  // 9+
            "TLS_RSA_WITH_AES_128_CBC_SHA",      // 9+
           };
     }
 }}}

 But that sure is sad. We need ciphers for 16+.

 [0] https://gitweb.torproject.org/tor-
 browser.git/tree/mobile/android/services/src/main/java/org/mozilla/gecko/background/common/GlobalConstants.java?h
 =tor-browser-60.1.0esr-8.0-1#n47
 [1] https://gitweb.torproject.org/tor-
 browser.git/tree/mobile/android/services/src/main/java/org/mozilla/gecko/sync/net/BaseResource.java?h
 =tor-browser-60.1.0esr-8.0-1#n261

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26982>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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