#VU32575 Cryptographic issues in GnuTLS - CVE-2014-0092

Vulnerability identifier: #VU32575

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2014-0092

CWE-ID: CWE-310

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GnuTLS
Universal components / Libraries / Libraries used by multiple products

Vendor: GnuTLS

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

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.

Mitigation
Install update from vendor's website.

Vulnerable software versions

GnuTLS: 3.1.0 - 3.1.21

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

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.