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UNIRAS Brief - 47/04 - Check Point - FireWall-1 HTTP Parsing Format String Vulnerabilities



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   UNIRAS (UK Govt CERT) Briefing Notice - 47/04 dated 05.02.04  Time: 10:55
 UNIRAS is part of NISCC(National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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Title
=====
Check Point FireWall-1 HTTP Parsing Format String Vulnerabilities

Detail
======

TITLE:
Check Point FireWall-1 HTTP Parsing Format String Vulnerabilities

SECUNIA ADVISORY ID:
SA10794

VERIFY ADVISORY:
http://www.secunia.com/advisories/10794/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
- From remote

SOFTWARE:
Check Point Firewall-1 NG
Check Point FireWall-1 NG with Application Intelligence (AI)
Check Point Firewall-1 4.x

DESCRIPTION:
Mark Dowd of ISS X-Force has discovered multiple vulnerabilities in
Check Point FireWall-1, which can be exploited by malicious people to
compromise a vulnerable firewall.

The vulnerabilities are caused due to format string errors in the
Application Intelligence component and the HTTP Security Server
application proxy during parsing of HTTP traffic. This can be
exploited to execute arbitrary code with SYSTEM or root privileges on
a vulnerable firewall by sending specially crafted HTTP requests
containing certain invalid data including format specifiers.

Successful exploitation requires that HTTP Application Intelligence
or the HTTP Security Server is enabled.

The vulnerabilities have been reported in the following versions:
* Check Point Firewall-1 NG-AI R55, R54, including SSL hotfix.
* Check Point Firewall-1 HTTP Security Server included with NG FP1,
FP2, FP3.
* Check Point Firewall-1 HTTP Security Server included with 4.1.

SOLUTION:
The vendor has issued a fix.
http://www.checkpoint.com/techsupport/downloadApp/displayDownloads.jsp?the_product=VPN-1/FireWall-1&version_selected=NG%20with%20App
lication%20Intelligence&os_selected=Windows%202000&patchlevel_selected=R55%20Security%20Server%20Hotfix

PROVIDED AND/OR DISCOVERED BY:
Mark Dowd, ISS X-Force.

ORIGINAL ADVISORY:
ISS X-Force:
http://xforce.iss.net/xforce/alerts/id/162

Check Point:
http://www.checkpoint.com/techsupport/alerts/security_server.html

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About:
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For additional information or assistance, please contact the HELP Desk by
telephone or Not Protectively Marked information may be sent via EMail to:
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UNIRAS wishes to acknowledge the contributions of ISS & Secunia for the information
contained in this Briefing.
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This Briefing contains the information released by the original author. Some
of the information may have changed since it was released. If the vulnerability
affects you, it may be prudent to retrieve the advisory from the canonical site
to ensure that you receive the most current information concerning that problem.

Reference to any specific commercial product, process, or service by trade
name, trademark manufacturer, or otherwise, does not constitute or imply
its endorsement, recommendation, or favouring by UNIRAS or NISCC.  The views
and opinions of authors expressed within this notice shall not be used for
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Neither UNIRAS or NISCC shall also accept responsibility for any errors
or omissions contained within this briefing notice. In particular, they shall
not be liable for any loss or damage whatsoever, arising from or in connection
with the usage of information contained within this notice.

UNIRAS is a member of the Forum of Incident Response and Security Teams (FIRST)
and has contacts with other international Incident Response Teams (IRTs) in
order to foster cooperation and coordination in incident prevention, to prompt
rapid reaction to incidents, and to promote information sharing amongst its
members and the community at large.
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<End of UNIRAS Briefing>
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