Check Point Advisories

Squid Proxy HTCP Packet Processing Denial of Service (CVE-2010-0639)

Check Point Reference: CPAI-2010-129
Date Published: 12 May 2010
Severity: Medium
Last Updated: Thursday 05 November, 2015
Source:
Industry Reference:CVE-2010-0639
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description The Squid proxy server is a popular open source, Internet proxy and web caching application. It supports various network protocols such as HTTP, FTP, SSL, DNS, and HTCP. A denial of service vulnerability has been reported in Squid Proxy. The vulnerability is due to a NULL pointer dereference when processing specially crafted Hypertext Caching Protocol (HTCP) packets. Remote attackers can exploit this issue by sending a malicious HTCP request to the target server. Successful exploitation could terminate the affected server process abnormally and result in 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, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

  1. In the IPS tab, click Protections and find the Squid Proxy HTCP Packet Processing Denial of Service protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Proxy Server Enforcement Violation.
Attack Information:  Squid proxy HTCP packet processing denial of service

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