CVE Catalog

CVE-2004-0765

High
Published: Translated: NVD NIST

Summary

The cert_TestHostName function in Mozilla before 1.7, Firefox before 0.9, and Thunderbird before 0.7 only checks the hostname portion of a certificate when the hostname portion of the URI is not a fully qualified domain name (FQDN), which allows remote attackers to spoof trusted certificates.

Risk Assessment

The organization is exposed to man-in-the-middle attacks where an attacker can impersonate a trusted site by exploiting incomplete certificate validation.

Recommendation

Immediately update Mozilla to version 1.7 or later, Firefox to 0.9 or later, and Thunderbird to 0.7 or later.

Related vulnerabilities

Original NVD description (English source)

The cert_TestHostName function in Mozilla before 1.7, Firefox before 0.9, and Thunderbird before 0.7, only checks the hostname portion of a certificate when the hostname portion of the URI is not a fully qualified domain name (FQDN), which allows remote attackers to spoof trusted certificates.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS