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The U.S. Department of Energy
Computer Incident Advisory Center
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INFORMATION BULLETIN
Gauntlet Firewall CSMAP and smap/smapd
Buffer Overflow Vulnerability
[PGP Security Bulletin 9/4/01]
September 7, 2001 20:00 GMT Number L-140
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PROBLEM: A buffer overflow vulnerability has been identified in the
smap/smapd and CSMAP mail proxy deamons used with several
firewall products.
PLATFORM: smap/smapd
Gauntlet for UNIX versions 5.x
PGP e-ppliance 300 series version 1.0
McAfee e-ppliance 100 and 120 series
CSMAP
Gauntlet for UNIX version 6.0
PGP e-ppliance 300 series versions 1.5, 2.0
PGP e-ppliance 1000 series versions 1.5, 2.0
McAfee WebShield for Solaris v4.1
Note: The smap/smapd programs are included with security
products from other vendors so more vulnerable systems may
be added to this bulletin at a later date.
DAMAGE: If exploited this buffer overflow could allow arbitrary shell
commands with the privileges of the owner of the corresponding
daemon.
SOLUTION: Apply patches.
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VULNERABILITY The risk is MEDIUM. The vulnerable deamons are responsible for
ASSESSMENT: handling e-mail transactions for both inbound and outbound
traffic and normally run as an unprivileged user.
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LINKS:
CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/l-140.shtml
ORIGINAL BULLETIN: http://www.pgp.com/support/product-advisories/csmap.asp
PATCHES: NAI: ftp://ftp.nai.com/pub/security/ PGP:
http://www.pgp.com/naicommon/download/upgrade/upgrades-patch.asp
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[****** Start PGP Security Advisory ******]
CSMAP and smap/smapd BUFFER OVERFLOW VULNERABILITY ADVISORY
Title: Gauntlet Firewall for Unix and WebShield CSMAP and smap/smapd Buffer
Overflow Vulnerability Advisory
Date: September 4, 2001
Author: Gauntlet Firewall Engineering
Background:
A security vulnerability has been discovered in smap/smapd on the
following products:
* Gauntlet for Unix versions 5.x
* PGP e-ppliance 300 series version 1.0
* McAfee e-ppliance 100 and 120 series
A security vulnerability has been discovered in CSMAP on the
following products:
* Gauntlet for Unix version 6.0
* PGP e-ppliance 300 series versions 1.5, 2.0
* PGP e-ppliance 1000 series versions 1.5, 2.0
* McAfee WebShield for Solaris v4.1
This security vulnerability is a Buffer Overflow in the smap/smapd and
CSMAP daemons. The smap/smapd and CSMAP daemons are responsible for
handling e-mail transactions for both inbound and outbound e-mail.
It is possible to exploit this Buffer Overflow vulnerability to execute
arbitrary shell commands with the same privileges as the owner of the corre-
sponding daemon.
Solution:
A patch to repair this vulnerability is available for all products listed
above at ftp://ftp.nai.com/pub/security/ and
http://www.pgp.com/naicommon/download/upgrade/upgrades-patch.asp for the
Gauntlet and PGP e-ppliance products and www.mcafeeb2b.com for the McAfee
e-ppliance and WebShield products.
This patch is a mandatory patch that includes a new version of the
corresponding daemons and addresses the buffer overflow. Instructions
for installing the patch are included in the README file contained
within the patch.
NOTE FOR HP-UX GAUNTLET v.5.x USERS:
Gauntlet v.5.x users on HP-UX must have HP-UX patch PHCO_16723 or later
installed for the smap/smapd patch to function properly, as there is a
dependency upon the library contained in that HP patch. The smap/smapd
patch for Gauntlet v.5.x makes a check for the presence of the latest
iteration of this patch (PHCO_23684). If this patch is not present, it
will inform the user that PHCO_16723 or later is required and prompt
the user if they want to continue. Failure to have PHCO_16723 or later
will prevent all e-mail traffic if the smap/smapd patch is installed.
PHCO_23684 is available from the HP support web site. The required
library is built into HP-UX v.11.0, so Gauntlet v.6.0 users on HP-UX
do not require an additional patch.
CREDITS: PGP Security acknowledges one of its partners, Garrison
Technologies, Inc., for notification about this problem.
[****** End PGP Security Advisory ******]
_______________________________________________________________________________
CIAC wishes to acknowledge the contributions of PGP Security for the
information contained in this bulletin.
_______________________________________________________________________________
CIAC, the Computer Incident Advisory Center, is the computer
security incident response team for the U.S. Department of Energy
(DOE) and the emergency backup response team for the National
Institutes of Health (NIH). CIAC is located at the Lawrence Livermore
National Laboratory in Livermore, California. CIAC is also a founding
member of FIRST, the Forum of Incident Response and Security Teams, a
global organization established to foster cooperation and coordination
among computer security teams worldwide.
CIAC services are available to DOE, DOE contractors, and the NIH. CIAC
can be contacted at:
Voice: +1 925-422-8193 (7x24)
FAX: +1 925-423-8002
STU-III: +1 925-423-2604
E-mail: ciac@ciac.org
Previous CIAC notices, anti-virus software, and other information are
available from the CIAC Computer Security Archive.
World Wide Web: http://www.ciac.org/
Anonymous FTP: ftp.ciac.org
PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing
communities receive CIAC bulletins. If you are not part of these
communities, please contact your agency's response team to report
incidents. Your agency's team will coordinate with CIAC. The Forum of
Incident Response and Security Teams (FIRST) is a world-wide
organization. A list of FIRST member organizations and their
constituencies can be obtained via WWW at http://www.first.org/.
This document was prepared as an account of work sponsored by an
agency of the United States Government. Neither the United States
Government nor the University of California nor any of their
employees, makes any warranty, express or implied, or assumes any
legal liability or responsibility for the accuracy, completeness, or
usefulness of any information, apparatus, product, or process
disclosed, or represents that its use would not infringe privately
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Government or the University of California, and shall not be used for
advertising or product endorsement purposes.
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