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CERT Coordination Center

Check Point RDP Bypass Vulnerability

Vulnerability Note VU#310295

Original Release Date: 2001-07-09 | Last Revised: 2003-04-09

Overview

Check Point VPN-1/FireWall-1 version 4.0 & 4.1 may allow an intruder to pass traffic through the firewall on port 259.

Description

Firewall-1 and VPN-1 include support for RDP, but do not provide adequate security controls for RDP data. By adding a faked RDP header to typical UDP traffic, any content can be passed to port 259 on any host on either side of the device.

Impact

An attacker who exploits this vulnerability can build a tunnel to bypass the firewall and pass traffic to and from arbitrary hosts on either side of the firewall on port 259.

Solution

Apply patch from vendor.

Vendor Information

310295
 

CVSS Metrics

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References

Acknowledgements

The vulnerability was discovered by Jochen Bauer and Boris Wesslowski of Inside Security GmbH Stuttgart, Germany.

This document was written by Ian A. Finlay.

Other Information

CVE IDs: CVE-2001-1158
CERT Advisory: CA-2001-17
Severity Metric: 51.30
Date Public: 2001-07-09
Date First Published: 2001-07-09
Date Last Updated: 2003-04-09 19:26 UTC
Document Revision: 59

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