SSL: GnuTLS X.509 Version 1 Intermediate Certificate Policy Bypass
A policy-bypass vulnerability has been found in GnuTLS. The vulnerability is due to an error in lib/x509/verify.c where an X.509 version 1 certificate is incorrectly treated as an intermediate CA certificate. A remote attacker could exploit this vulnerability to bypass certificate validation if the target system has in its trusted list a CA that issues X.509 version 1 certificates.
Extended 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
Gnu gnutls
References
CVE: CVE-2014-1959
Short Name
SSL:GNUTLS-CERT-POLICY-BYPASS
Severity
Major
Recommended
False
Recommended Action
Drop
Category
SSL
Keywords
1 Bypass CVE-2014-1959 Certificate GnuTLS Intermediate Policy Version X.509
Release Date
06/12/2015
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3375
False Positive
Unknown
Vendors
Gnu
CVSS Score
5.8