Check Point Advisories

GnuTLS DANE dane.c Heap Buffer Overflow (CVE-2013-4466)

Vulnerability
Protection

Check Point Reference:	CPAI-2013-3554
Date Published:	14 Nov 2013
Severity:	High
Last Updated:	Monday 25 November, 2013
Source:
Industry Reference:	CVE-2013-4466
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A heap buffer overflow vulnerability has been found in GnuTLS. The vulnerability is due to an error in the function dane_query_tlsa() in libdane/dane.c while processing TLSA records. A remote attacker could exploit this vulnerability by enticing a vulnerable client to open a malicious domain name. A successful attack can result in arbitrary code execution, while an unsuccessful one will cause the vulnerable client application to terminate.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the GnuTLS DANE dane.c Heap Buffer Overflow protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: OpenSSL Enforcement Violation.
Attack Information: GnuTLS DANE dane.c heap buffer overflow