#VU41563 Input validation error in GnuTLS - CVE-2014-3465

Vulnerability identifier: #VU41563

Vulnerability risk: Medium

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

CVE-ID: CVE-2014-3465

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

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

Vendor: GnuTLS

Description

The vulnerability allows remote attackers to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (NULL pointer dereference) via a crafted X.509 certificate, related to a missing LDAP description for an OID when printing the DN.

Mitigation
Install update from vendor's website.

Vulnerable software versions

GnuTLS: 3.0.0 - 3.2.9

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External links
https://lists.gnutls.org/pipermail/gnutls-help/2014-January/003326.html
https://lists.gnutls.org/pipermail/gnutls-help/2014-January/003327.html
https://lists.opensuse.org/opensuse-security-announce/2014-06/msg00007.html
https://lists.opensuse.org/opensuse-security-announce/2014-06/msg00010.html
https://rhn.redhat.com/errata/RHSA-2014-0684.html
https://secunia.com/advisories/59086
https://bugzilla.redhat.com/show_bug.cgi?id=1101734
https://www.gitorious.org/gnutls/gnutls/commit/d3648ebb04b650e6d20a2ec1fb839256b30b9fc6

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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.