lib/x509/verify.c in GnuTLS before 3.1.22 and 3.2.x before 3.2.12 does not properly handle unspecified errors when verifying X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers via a crafted certificate.

References

• https://nvd.nist.gov/vuln/detail/CVE-2014-0092
• https://bugzilla.redhat.com/show_bug.cgi?id=1069865
• http://gnutls.org/security.html#GNUTLS-SA-2014-2
• http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00002.html
• http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00003.html
• http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00004.html
• http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00005.html
• http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00006.html
• http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00007.html
• http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00009.html
• http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00020.html
• http://rhn.redhat.com/errata/RHSA-2014-0246.html
• http://rhn.redhat.com/errata/RHSA-2014-0247.html
• http://rhn.redhat.com/errata/RHSA-2014-0288.html
• http://rhn.redhat.com/errata/RHSA-2014-0339.html
• http://secunia.com/advisories/56933
• http://secunia.com/advisories/57103
• http://secunia.com/advisories/57204
• http://secunia.com/advisories/57254
• http://secunia.com/advisories/57260
• http://secunia.com/advisories/57274
• http://secunia.com/advisories/57321
• http://www.debian.org/security/2014/dsa-2869
• http://www.securityfocus.com/bid/65919
• http://www.ubuntu.com/usn/USN-2127-1