CVE-2014-1959

Severity: medium (CVSS 5.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2014-03-07 · updated 2026-06-17
Weakness: CWE-264

Description

lib/x509/verify.c in GnuTLS before 3.1.21 and 3.2.x before 3.2.11 treats version 1 X.509 certificates as intermediate CAs, which allows remote attackers to bypass intended restrictions by leveraging a X.509 V1 certificate from a trusted CA to issue new certificates.

Affected products

[UNKNOWN] gnutls: through 3.1.20; through 3.2.10; 3.1.0, 3.1.1, 3.1.2, 3.1.3, 3.1.4, 3.1.5 (+25)

References

http://seclists.org/oss-sec/2014/q1/344
http://seclists.org/oss-sec/2014/q1/345
http://www.debian.org/security/2014/dsa-2866
http://www.gnutls.org/security.html
http://www.securityfocus.com/bid/65559
http://www.ubuntu.com/usn/USN-2121-1
https://www.gitorious.org/gnutls/gnutls/commit/b1abfe3d182d68539900092eb42fc62cf1bb7e7c
http://seclists.org/oss-sec/2014/q1/344
http://seclists.org/oss-sec/2014/q1/345
http://www.debian.org/security/2014/dsa-2866
http://www.gnutls.org/security.html
http://www.securityfocus.com/bid/65559

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