FF102 Audit

General

The audit begins at the commit hash where the previous audit ended. Use code_audit.sh for creating the diff and highlighting potentially problematic code. The audit is scoped to a specific language (currently C/C++, Rust, Java/Kotlin, and Javascript).

The output includes the entire patch where the new problematic code was introduced. Search for XXX MATCH XXX to find the next potential violation.

code_audit.sh contains the list of known problematic APIs. New usage of these functions are documented and analyzed in this audit.

Firefox: https://github.com/mozilla/gecko-dev.git

• Start: 856b9168439ef597dbd103cd1e2940a8ad110450 ( FIREFOX_RELEASE_102_BASE )
• End: 4960b7d420528392cc095c247a662670785b18b9 ( FIREFOX_RELEASE_103_BASE )

Languages:

• java
• cpp
• js
• rust

Nothing of interest (using code_audit.sh)

---

Application Services: https://github.com/mozilla/application-services.git

• Start: 0302b89604bb29adb34fdcd710feabd3dd01992d ( v93.5.0 )
• End: 55cbbddfdcb4ec82d2850e0811e8675fea2686c2 ( v93.7.0 )

Languages:

• java
• cpp
• js
• rust

Nothing of interest (using code_audit.sh)

Android Components: https://github.com/mozilla-mobile/android-components.git

• Start: 2b414097d4f540948f67f62f57c5ddcb0e2789d9 ( v102.0.1 )
• End: cd19f9a6c5e26c4e57dda6e549a5c63ac7c042ea ( v102.0.14 )

Languages:

• java
• cpp
• js
• rust

Nothing of interest (using code_audit.sh)

Fenix: https://github.com/mozilla-mobile/fenix.git

• Start: cc68c965cbb29eb16244d242d433051327de5f48 ( v102.0.0-beta.1 )
• End: 2ec252d5f5d09b3eb73840ce585453b7105a7a7d ( releases_v102.0.0 )

Languages:

• java
• cpp
• js
• rust

Nothing of interest (using code_audit.sh)

Ticket Review

102 https://bugzilla.mozilla.org/buglist.cgi?query_format=advanced&resolution=FIXED&target_milestone=102%20Branch&order=priority%2Cbug_severity&limit=0

• https://bugzilla.mozilla.org/show_bug.cgi?id=1767919 : @pierov tor-browser#41152 (closed)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1770881 : @pierov tor-browser#41153 102esr is unaffected: the Bugzilla ticket was wrong and then has been fixed
• https://bugzilla.mozilla.org/show_bug.cgi?id=1765167 : @pierov tor-browser#41154 (closed)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1751450 : @richard tor-browser#41155 (closed)

where $(FIREFOX_VERSION) is the major Firefox version we are auditing (eg: '91')

Nothing of interest (manual inspection)

OR (foreach)**

foreach PROBLEMATIC_TICKET:

$(PROBLEMATIC_TICKET)

• Summary
• Review Result: (SAFE|BAD)

Regression/Prior Vuln Review

Review proxy bypass bugs; check for new vectors to look for:

• https://gitlab.torproject.org/groups/tpo/applications/-/issues?scope=all&utf8=%E2%9C%93&state=opened&label_name[]=Proxy%20Bypass
  • Look for new features like these. Especially external app launch vectors

Export

• Export Report and save to tor-browser-spec/audits