|Check Point Reference:||CPAI-2015-1158|
|Date Published:||6 Oct 2015|
|Last Updated:||10 May 2018|
|Protection Provided by:||
|Who is Vulnerable?|| OpenSSL Project OpenSSL prior to 0.9.8zg |
OpenSSL Project OpenSSL prior to 1.0.0s
OpenSSL Project OpenSSL prior to 1.0.1n
OpenSSL Project OpenSSL prior to 1.0.2b
|Vulnerability Description||A denial-of-service vulnerability exists in OpenSSL. The vulnerability is due to an error in X509_cmp_time() that causes OpenSSL to read beyond the end of a buffer. A remote, unauthenticated attacker can exploit this vulnerability by sending a crafted certificate to a vulnerable OpenSSL client or server application. Successful exploitation will cause the application to terminate, 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: SSL Enforcement Violation.
Attack Information: OpenSSL X509_cmp_time Denial of Service