Check Point Advisories

Apache HTTPD mod_log_config Cookie Handling Denial of Service (CVE-2012-0021)

Check Point Reference: CPAI-2012-167
Date Published: 14 May 2012
Severity: High
Last Updated: Thursday 25 April, 2024
Source: CVE-2012-0021
Protection Provided by:

Security Gateway
R75
Who is Vulnerable? Apache Software Foundation HTTP Server 2.2.21 and prior
Vulnerability Description A denial of service vulnerability has been reported in Apache HTTPD server.
Vulnerability DetailsThe vulnerability is due to a NULL pointer dereference error while logging crafted HTTP requests by mod_log_config. A remote attacker can exploit this issue by continuously sending HTTP requests containing specially crafted Cookie headers to the target server. Successful exploitation could cause the server to crash, resulting in a complete denial of service condition.

Protection Overview

This protection will detect and block specially crafted HTTP requests sent to the server.

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

  1. In the IPS tab, click Protections and find the Apache HTTPD mod_log_config Cookie Handling Denial of Service protection using the Search tool and Edit the protection's settings.
  2. Install policy on all modules.

SmartView Tracker will log the following entries:
Attack Name: Web Server Enforcement Violation
Attack Information: Apache HTTPD mod_log_config Cookie Handling Denial of Service

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