Check Point Advisories

CVS File Existence Information Disclosure (CVE-2004-0788)

Check Point Reference: CPAI-2004-169
Date Published: 14 Oct 2009
Severity: Medium
Last Updated: Wednesday 14 October, 2009
Source:
Industry Reference:CVE-2004-0788
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description Concurrent Versions System (CVS) is an open-source network-transparent version control system. CVS itself does not listen for, or accept network connections. To implement remote repository access, it can be installed as an inetd service, or invoked with the rsh/ssh command. Data between the server and client is then piped to standard in/out file handles. When CVS is invoked by inetd, it will be passed a "pserver" or a "kserver" command line argument, which indicates the utilization of a built-in password authentication or Kerberos authentication, respectively. When accessed by rsh/ssh, the user authentication is done though the rsh/ssh login, CVS will then be invoked as "cvs server". In all cases, the code steps into the same service function after authentication has succeeded. A weakness exists in the Concurrent Versions System (CVS) with the cvs "history" command. An anonymous or low-privileged attacker can exploit this weakness to gain information about files on a CVS server. The attacked target will continue to operate normally. No difference in behaviour would be observed.

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 CVS File Existence Information Disclosure 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:  Application Servers Protection Violation.
Attack Information:  CVS file existence information disclosure

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