Check Point Advisories

Apache HTTP Server mod_dav MERGE Request Denial of Service - Ver2 (CVE-2013-1896)

Vulnerability
Protection

Check Point Reference:	CPAI-2014-2429
Date Published:	28 Dec 2014
Severity:	High
Last Updated:	Sunday 17 May, 2015
Source:
Industry Reference:	CVE-2013-1896
Protection Provided by:	Security Gateway R77, R76, R75
Who is Vulnerable?
Vulnerability Description	A denial of service vulnerability has been reported in the mod_dav component of Apache HTTP Server. The vulnerability is due to a NULL pointer dereference when processing a MERGE request with a URI whose source href points to a non-DAV configured URI. A remote attacker can send a crafted HTTP request to trigger the vulnerability and cause the HTTP server daemon process to segfault, creating a denial of service condition.

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,
Protection tab and select the version of your choice.

Security Gateway R77 / R76 / R75 / R71 / R70

In the IPS tab, click Protections and find the Apache HTTP Server mod_dav MERGE Request Denial of Service - Ver2 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: Apache Server Protection Violation.
Attack Information: Apache HTTP Server mod_dav MERGE Request Denial of Service - Ver2