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Check Point Firewall CIFS Service Group Rule Bypass
Secunia Advisory: SA16770
Release Date: 2005-09-26
Last Update: 2005-09-27
Popularity: 8,559 views

Critical:
Less critical
Impact: Security Bypass
Where: From remote
Solution Status: Vendor Workaround

Software:Check Point Firewall-1 4.x
Check Point FireWall-1 GX 2.x
Check Point Provider-1
Check Point VPN-1 Server 4.x
Check Point VPN-1/Firewall-1 NG
Check Point VPN-1/FireWall-1 NG with Application Intelligence (AI)
Check Point VPN-1/FireWall-1 VSX NG

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CVE reference:CVE-2005-2889


Description:
fitz has reported a security issue in Check Point Firewall, which potentially can be exploited by malicious people to bypass certain security restrictions.

The security issue is caused due to an error in the CIFS service group implementation. This may cause all traffic from a network in the CIFS service group to either pass through the firewall or be dropped at the firewall, depending on the configured rule.

The security issue has been reported in the following products:
* VPN-1/FireWall-1
* VPN-1 VSX
* Provider-1

Solution:
The vendor suggests renaming the CIFS service group.

Refer to the vendor's advisory for instructions.

Provided and/or discovered by:
fitz

Changelog:
2005-09-27: Added CVE reference.

Original Advisory:
Check Point:
http://secureknowledge.us.checkpoint....ge/viewSolutionDocument.do?id=sk31196

Other References:
US-CERT VU#508209:
http://www.kb.cert.org/vuls/id/508209


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