Mozilla Network Security Services (NSS) before 3.12.3, Firefox before 3.0.13, Thunderbird before 2.0.0.23, and SeaMonkey before 1.1.18 do not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority. NOTE: this was originally reported for Firefox before 3.5.

Threat-Mapped Scoring

Score: 0.0

Priority: Unclassified

EPSS

Score: 0.01808
Percentile: 0.82021

CVSS Scoring

Mapped CWE(s)

• CWE-295 : Improper Certificate Validation

All CAPEC(s)

CAPEC(s) with Mapped TTPs

Mapped ATT&CK TTPs

Affected Products

• cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:network_security_services:*:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:opensuse:*:*:*:*:*:*:*:*
• cpe:2.3:o:suse:linux_enterprise:10.0:-:*:*:*:*:*:*
• cpe:2.3:o:suse:linux_enterprise:11.0:-:*:*:*:*:*:*
• cpe:2.3:o:suse:linux_enterprise_server:9:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:*

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