FireWall-1/VPN-1 Input Validation Hole in PKI Web Service Lets Remote Users View Files on the Underlying System
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SecurityTracker Alert ID: 1016563
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SecurityTracker URL: http://securitytracker.com/id?1016563
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CVE Reference: CVE-2006-3885
(Links to External Site)
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Updated: Jun 13 2008
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Original Entry Date: Jul 24 2006
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Impact: Disclosure of system information, Disclosure of user information
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Fix Available: Yes
Exploit Included: Yes
Vendor Confirmed: Yes
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Version(s): R55W HFA2 and prior
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Description: A vulnerability was reported in FireWall-1/VPN-1. A remote user can view files on the target system.
The software does not properly validate user-supplied input on the built-in web server that runs on TCP port 18264. A remote user
can supply a request containing specially crafted hex-encoded characters to view files on target system.
The original advisory
is available at:
http://www.sec-tec.co.uk/vulnerability/r55w_directory_traversal.html
Pete Foster of Sec-Tec Ltd reported
this vulnerability.
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Impact: A remote user can view files on the target system.
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Solution: The vendor silently fixed this vulnerability in R55W HFA03.
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Vendor URL: www.checkpoint.com/ (Links to External Site)
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Cause: Access control error, Input validation error
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Reported By: "Sec-Tec Lists" <zen31438@zen.co.uk>
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Message History:
None.
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Source Message Contents
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Date: Mon, 24 Jul 2006 17:33:24 +0100
From: "Sec-Tec Lists" <zen31438@zen.co.uk>
Subject: Check Point R55W Directory Traversal
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Overview
Check Point Firewall-1 R55W contains a hard coded web server, which runs on
TCP port 18264. This server is there to deal with PKI requirements for Check
Point's VPN functionality.
During a routine penetration test of a client, Sec-Tec discovered a
directory traversal vulnerability that allows a potential attacker to
retrieve files from the underlying OS.
This issue is potentially serious for a number of reasons:
1. Check Point's "rule zero" will often by default allow access to this port
for external IP addresses.
2. It would currently seem that there are few restrictions as to what files
can be retrieved via this mechanism (Sec-Tec were able to obtain the
underlying OS' account repository).
Exploit
The issue can be exploited via a web browser using typical hex encoded
directory traversal strings.
Affected Version(s):
Check Point R55W
Check Point R55W HFA1
Check Point R55W HFA2
(Confirmed on Windows 2003 Server platform, other platforms may be
affected.)
Current Status
Check Point have confirmed that this issue was corrected in R55W HFA03.
However, Sec-Tec have been unable to find any publicly available references
to this issue, either within Check Point's knowledge base or HFA03 release
notes.
Updates to this issue will be found at:
http://www.sec-tec.co.uk/vulnerability/r55w_directory_traversal.html
Pete Foster
Senior Consultant
Sec-Tec Ltd
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