CVE-2012-3993
The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0,…
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Metasploit module and an Exploit-DB entry for it.
Metasploit modules1 module
- Firefox 5.0 - 15.0.1 __exposedProps__ XCS Code Execution (Metasploit module) (opens in a new tab)
exploit/multi/browser/firefox_proto_crmfrequestRank excellentdisclosed 6 Aug 2013
Exploit-DB1 entry
- Mozilla Firefox 5.0 < 15.0.1 - __exposedProps__ XCS Code Execution (Metasploit) (Exploit-DB entry) (opens in a new tab)
EDB-ID 30474local, multiplepublished 6 Aug 2013Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 3 months later
· 3 months later
Published
- 12 years later
· 12 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 42.6% · top 1.3% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 9.3.
Weakness
Affected products
n/a
- affected n/a
References (17)
- 50904 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 50984 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 50935 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://www.mozilla.org/security/announce/2012/mfsa2012-83.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- 50856 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 50892 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- oval:org.mitre.oval:def:16718 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- RHSA-2012:1351 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- firefox-cow-privilege-escalation(79153) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 50936 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 86111 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=768101 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 55318 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- SUSE-SU-2012:1351 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- MDVSA-2012:163 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- USN-1611-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 56119 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2012-3937 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2012-3993)Record last updated .