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Category:   Application (Firewall)  >   FireWall-1/VPN-1 Vendors:   Check Point
Check Point FireWall-1 Format String Flaw in HTTP Component Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1008947
SecurityTracker URL:  http://securitytracker.com/id/1008947
CVE Reference:   CVE-2004-0039   (Links to External Site)
Updated:  Feb 11 2004
Original Entry Date:  Feb 5 2004
Impact:   Execution of arbitrary code via network, Root access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): NG-AI R55, R54; NG; 4.1
Description:   Several format string vulnerabilities were reported in Check Point FireWall-1 in the HTTP Application Intelligence component. A remote user can execute arbitrary code on the firewall with SYSTEM or root level privileges.

Internet Security Systems (ISS) reported that a remote user can submit a specially crafted HTTP request containing format string specifiers to trigger the flaw. Arbitrary code execution is possible, the report said. If code execution is not achieved, all established HTTP sessions will reportedly be dropped.

The HTTP Security Server application proxy is also affected.

The vendor indicates that you are only affected if you use the HTTP security servers.

The vendor was reportedly notified on February 2, 2004.

Impact:   A remote user can execute arbitrary code on the target system with SYSTEM/root privileges.
Solution:   The vendor has issued a fix, applicable to the following releases:

1. NG FP3 HF2
2. NG with Application intelligence R54
3. NG with Application intelligence R55
4. Other NG based releases (NG FCS, NG FP1, NG FP2 ...).

The fix is available for Software Subscription customers at:

http://www.checkpoint.com/techsupport/downloadApp/displayDownloads.jsp?the_product=VPN-1/FireWall-1&version_selected=NG%20with%20Application%20Intelligence&os_selected=Windows%202000&patchlevel_selected=R55%20Security%20Server%20Hotfix

Vendor URL:  www.checkpoint.com/techsupport/alerts/security_server.html (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (AIX), UNIX (HP/UX), UNIX (Solaris - SunOS), Windows (NT), Windows (2000)

Message History:   None.


 Source Message Contents

Subject:  ISS Security Brief: Checkpoint Firewall-1 HTTP Parsing Format String Vulnerabilities


-----BEGIN PGP SIGNED MESSAGE-----

Internet Security Systems Security Brief
February 4, 2004

Checkpoint Firewall-1 HTTP Parsing Format String Vulnerabilities
 
Synopsis:

ISS X-Force has discovered a flaw in the HTTP Application Intelligence
component of Firewall-1. Application Intelligence is a relatively recent
addition to the Firewall-1 product line and functions as an application
proxy between untrusted networks and network servers for the purpose of
detecting and preventing potential attacks. The vulnerabilities also exist
within the HTTP Security Server application proxy that ships with all
versions of Firewall-1 (including those prior to Application Intelligence
releases). The affected components contain several remotely exploitable
format string vulnerabilities.

Impact:

If HTTP Application Intelligence is enabled or the HTTP Security Server is
used, a remote unauthenticated attacker may exploit one of these
vulnerabilities and execute commands under the security context of the
super-user, usually "SYSTEM", or "root". This attack may lead to direct
compromise of the Firewall-1 server.

Remote attackers may leverage this attack to successfully compromise heavily
hardened networks by modifying or tampering with the firewall rules and
configuration. 

Affected Versions:

Checkpoint Firewall-1 NG-AI R55, R54, including SSL hotfix
Checkpoint Firewall-1 HTTP Security Server included with NG FP1, FP2, FP3
Checkpoint Firewall-1 HTTP Security Server included with 4.1

For the complete ISS X-Force Security Advisory, please visit: 
http://xforce.iss.net/xforce/alerts/id/162

______ 

About Internet Security Systems (ISS) 
Founded in 1994, Internet Security Systems (ISS) (Nasdaq: ISSX) is a 
pioneer and world leader in software and services that protect critical 
online resources from an ever-changing spectrum of threats and misuse. 
Internet Security Systems is headquartered in Atlanta, GA, with 
additional operations throughout the Americas, Asia, Australia, Europe 
and the Middle East. 

Copyright (c) 2004 Internet Security Systems, Inc. All rights reserved 
worldwide. 

Permission is hereby granted for the electronic redistribution of this 
document. It is not to be edited or altered in any way without the 
express written consent of the Internet Security Systems X-Force. If you 
wish to reprint the whole or any part of this document in any other 
medium excluding electronic media, please email xforce@iss.net for 
permission. 

Disclaimer: The information within this paper may change without notice. 
Use of this information constitutes acceptance for use in an AS IS 
condition. There are NO warranties, implied or otherwise, with regard to 
this information or its use. Any use of this information is at the 
user's risk. In no event shall the author/distributor (Internet Security 
Systems X-Force) be held liable for any damages whatsoever arising out 
of or in connection with the use or spread of this information. 
X-Force PGP Key available on MIT's PGP key server and PGP.com's key server, 
as well as at http://www.iss.net/security_center/sensitive.php 
Please send suggestions, updates, and comments to: X-Force 
xforce@iss.net of Internet Security Systems, Inc. 

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