Check Point Advisories

OpenSSL ssl23_get_client_hello Function Denial of Service (CVE-2014-3569)

Vulnerability
Protection

Check Point Reference:	CPAI-2015-0029
Date Published:	12 Jan 2015
Severity:	High
Last Updated:	Thursday 05 March, 2015
Source:	OpenSSL0150108.txt secadv_20150108.txt
Industry Reference:	CVE-2014-3569
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	OpenSSL Project OpenSSL prior to 0.9.8zd OpenSSL Project OpenSSL prior to 1.0.0p OpenSSL Project OpenSSL prior to 1.0.1k
Vulnerability Description	A denial of service vulnerability exists in the OpenSSL library compiled with no-ssl3. A remote, unauthenticated attacker can exploit this vulnerability by sending a crafted handshake to the target application and cause it 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 OpenSSL ssl23_get_client_hello Function Denial of Service 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: OpenSSL ssl23_get_client_hello Function Denial of Service