Vulnerability Note VU#887332

Mozilla mail products vulnerable to heap buffer overflow via Content-Type headers

Original Release date: 20 Dec 2006 | Last revised: 31 Jan 2007


Mozilla mail products contain a heap buffer overflow vulnerability in the way they process Content-Type headers. This may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.


Mozilla Thunderbird and SeaMonkey contain a buffer overflow vulnerability. Both applications fail to properly process long Content-Type headers in external message bodies.


A remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system



Mozilla has addressed these vulnerabilities in Thunderbird and SeaMonkey 1.0.7.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
MozillaAffected-20 Dec 2006
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



This vulnerability was reported in Mozilla Foundation Security Advisory 2006-74. Mozilla credits Georgi Guninski.

This document was written by Katie Steiner.

Other Information

  • CVE IDs: CVE-2006-6505
  • Date Public: 19 Dec 2006
  • Date First Published: 20 Dec 2006
  • Date Last Updated: 31 Jan 2007
  • Severity Metric: 26.72
  • Document Revision: 25


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