Check Point Advisories

Microsoft Windows X.509 Certificate Validation Denial of Service (MS13-095; CVE-2013-3869)

Vulnerability
Protection

Check Point Reference:	CPAI-2013-3689
Date Published:	22 Dec 2013
Severity:	High
Last Updated:	Thursday 02 January, 2025
Source:	CVE-2013-3869
Protection Provided by:	Security Gateway R75
Who is Vulnerable?	Microsoft Windows XP Microsoft Windows Vista Microsoft Windows 7 Microsoft Windows 8 Microsoft Windows 8.1 Microsoft Windows RT Microsoft Windows RT 8.1 Microsoft Windows Server 2003 Microsoft Windows Server 2008 Microsoft Windows Server 2008 R2 Microsoft Windows Server 2012 Microsoft Windows Server 2012 R2
Vulnerability Description	A denial of service vulnerability exists in Microsoft Windows.
Update/Patch Avaliable	Apply patches from: MS13-095
Vulnerability Details	The flaw is due to improper handling of specially crafted X.509 certificates during certificate validation. Successful exploitation could cause a denial of service condition where the web service becomes unresponsive. A remote attacker can exploit this vulnerability by sending a maliciously crafted PKCS#12 file to a vulnerable server.

Protection Overview

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

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

Security Gateway R75 / R71 / R70

In the IPS tab, click Protections and find the Microsoft Windows X.509 Certificate Validation Denial of Service (MS13-095) protection using the Search tool and Edit the protection's settings.
Install policy on all modules.

SmartView Tracker will log the following entries:
Attack Name: Web Client Enforcement Violation
Attack Information: Microsoft Windows X.509 Certificate Validation Denial of Service (MS13-095)