Check Point Advisories

Multiple Browsers Telnet URI Handler File Manipulation (CVE-2004-0411; CVE-2004-0473)

Vulnerability
Protection

Check Point Reference:	CPAI-2004-147
Date Published:	3 Nov 2009
Severity:	High
Last Updated:	Tuesday 03 November, 2009
Source:
Industry Reference:	CVE-2004-0411 CVE-2004-0473
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	There exists a vulnerability that affects various web-browsers. Insufficient input validation for telnet URI (e.g., telnet://hostname) can cause the Telnet software activated by the browsers to treat specially crafted Telnet URI as command-line options. As such, a malicious attacker may be able to compromise the target machine. In a simple exploit case, the vulnerable system creates a file named by telnet's argument. If the file exists on user's file system, it will be overwritten.

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

In the IPS tab, click Protections and find the Multiple Browsers Telnet URI Handler File Manipulation protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Web Client Enforcement Violation.
Attack Information: Multiple browsers Telnet URI handler file manipulation