Description
The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 does not properly interact with failures of InstallTrigger methods, which allows remote attackers to execute arbitrary JavaScript code with chrome privileges via a crafted web site, related to an "XrayWrapper pollution" issue.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | firefox +3 | 10.0.8-1.el6_3 | RHSA-2012:1351, RHSA-2012:1350 |
| RHEL 5 | firefox +3 | 10.0.8-1.el5_8 | RHSA-2012:1351, RHSA-2012:1350 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 10.0.8-1.el5_8 | RHSA-2012:1351 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 50.1.0-1.1 | openSUSE-SU-2024:10071-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 45.5.1-1.1 | openSUSE-SU-2024:10230-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Metasploit 1 module
-
Firefox 5.0 - 15.0.1 __exposedProps__ XCS Code Execution
exploit/multi/browser/firefox_proto_crmfrequest
Exploit-DB 1
- Mozilla Firefox 5.0 < 15.0.1 - __exposedProps__ XCS Code Execution (Metasploit) EDB-30474 · local · Aug 6, 2013 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 5
- RHSA-2012:1351 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:1350 Red Hat Security Advisory: firefox security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- openSUSE-SU-2024:10230-1 MozillaThunderbird-45.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14572-1 firefox-esr-128.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10071-1 MozillaFirefox-50.1.0-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- 50904 third-party-advisory
- 50984 third-party-advisory
- 50935 third-party-advisory
- http://www.mozilla.org/security/announce/2012/mfsa2012-83.html
- 50856 third-party-advisory
- 50892 third-party-advisory
- oval:org.mitre.oval:def:16718 vdb-entry signature
- RHSA-2012:1351 vendor-advisory
- firefox-cow-privilege-escalation(79153) vdb-entry
- 50936 third-party-advisory
- 86111 vdb-entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=768101
- 55318 third-party-advisory
- SUSE-SU-2012:1351 vendor-advisory
- MDVSA-2012:163 vendor-advisory
- USN-1611-1 vendor-advisory
- 56119 vdb-entry