Check Point Advisories

ClamAV Mail Filter Extension Crafted Recipient Command Execution (CVE-2007-4560)

Check Point Reference: CPAI-2007-316
Date Published: 15 Nov 2009
Severity: High
Last Updated: Monday 02 June, 2014
Source:
Industry Reference:CVE-2007-4560
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description ClamAV AntiVirus is an open source product that provides anti-virus scanning utilities and an anti-virus library. ClamAV includes a milter (mail filter) for the mail transfer agents (MTA) such as Sendmail. A milter is a mail filter extension used for MTAs that allows third-party programs to access mail message when it is being processed in order to filter meta-information and content. A shell command injection vulnerability exists in ClamAV AntiVirus product. The vulnerability can be triggered when the application processes malicious SMTP commands. An unauthenticated attacker can exploit this vulnerability by delivering a crafted request to the target host, resulting in command injection and execution with privileges of the affected ClamAV application. A successful exploitation of the vulnerability allows an attacker to execute the shell commands with the privileges of the affected ClamAV application. The behaviour of the system depends on the nature of the injected shell commands.

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 ClamAV Mail Filter Extension Crafted Recipient Command Execution 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:  Security Products Enforcement Violation.
Attack Information:  ClamAV Mail filter extension crafted recipient command execution

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