|Check Point Reference:||CPAI-2012-292|
|Date Published:||2 Jul 2012|
|Last Updated:||16 Nov 2017|
|Protection Provided by:||
|Who is Vulnerable?|
|Vulnerability Description||A buffer overflow vulnerability has been reported in libtasn1, a component of GnuTLS. The vulnerability is due to an error in the libtasn1 library while handling length fields within the ASN.1 fields. A remote attacker can exploit this vulnerability by sending specially crafted certificates to the target service. Successful exploitation would allow an attacker to execute arbitrary code in the security context of the affected service. An exploitation attempt may also cause the service to crash, resulting in a denial of service condition.|
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.
This protection's log will contain the following information:
Attack Name: OpenSSL Enforcement Violation.
Attack Information: GnuTLS libtasn1 ASN1 Length Fields Buffer Overflow