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The U.S. Department of Energy
Computer Incident Advisory Capability
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INFORMATION BULLETIN
Sun SEA SNMP Vulnerability
[Sun Microsystems, Inc. Security Bulletin #00219]
June 6, 2002 13:00 GMT Number M-086
______________________________________________________________________________
PROBLEM: A vulnerability has been discovered in snmpdx and a buffer
overflow found in mibiisa which may be exploited by a local or
a remote attacker to gain root access on the affected system.
The snmpdx master agent and the mibiisa agent run as daemons
with root privileges on the system.
PLATFORM: SunOS 5.8, 5.8_x86, 5.7, 5.7_x86, 5.6, 5.6_x86
DAMAGE: Exploiting this vulnerability could lead to a root compromise.
SOLUTION: Apply available patches.
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VULNERABILITY The risk is MEDIUM. Both the Sun Solstice Enterprise Master
ASSESSMENT: Agent, sndmpx, and the Sun SNMP agent, mibiisa, need to be
running in order for the format string vulnerability to work.
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LINKS:
CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/m-086.shtml
ORIGINAL BULLETIN:
http://sunsolve.sun.com/pub-
cgi/retrieve.pl?doctype=coll&doc=secbull/219&type=0&nav=sec.sba
PATCHES: http://sunsolve.sun.com/securitypatch
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[***** Start Sun Microsystems, Inc. Security Bulletin #00219 *****]
________________________________________________________________________________
Sun Microsystems, Inc. Security Bulletin
Bulletin Number: #00219
Date: June 04, 2002
Cross-Ref: http://www.entercept.com/dr/snmp/
Title: SEA SNMP
________________________________________________________________________________
The information contained in this Security Bulletin is provided "AS IS."
Sun makes no warranties of any kind whatsoever with respect to the
information contained in this Security Bulletin. ALL EXPRESS OR IMPLIED
CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY WARRANTY OF
NON-INFRINGEMENT OR IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR
A PARTICULAR PURPOSE, ARE HEREBY DISCLAIMED AND EXCLUDED TO THE EXTENT
ALLOWED BY APPLICABLE LAW.
IN NO EVENT WILL SUN MICROSYSTEMS, INC. BE LIABLE FOR ANY LOST REVENUE,
PROFIT OR DATA, OR FOR DIRECT, SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL
OR PUNITIVE DAMAGES HOWEVER CAUSED AND REGARDLESS OF ANY THEORY OF LIABILITY
ARISING OUT OF THE USE OF OR INABILITY TO USE THE INFORMATION CONTAINED IN
THIS SECURITY BULLETIN, EVEN IF SUN MICROSYSTEMS, INC. HAS BEEN ADVISED OF
THE POSSIBILITY OF SUCH DAMAGES.
If any of the above provisions are held to be in violation of applicable law,
void, or unenforceable in any jurisdiction, then such provisions are waived
to the extent necessary for this disclaimer to be otherwise enforceable in
such jurisdiction.
________________________________________________________________________________
1. Bulletins Topics
Sun announces the release of patches for Solaris(tm) 8, 7, and
2.6 (SunOS(tm) 5.8, 5.7, and 5.6) which relate to security
fixes in snmpdx(1M) and mibiisa(1M).
Sun recommends that you install the patches listed in section 4
immediately on systems running the Sun Solstice Enterprise
Master Agent, snmpdx(1M), and the Sun SNMP Agent, mibiisa(1M), on
SunOS 5.8, 5.7, and 5.6.
2. Who is Affected
Vulnerable: SunOS 5.8, 5.8_x86, 5.7, 5.7_x86, 5.6,
5.6_x86
3. Understanding the Vulnerability
The Sun Solstice Enterprise Master Agent, snmpdx, runs as a daemon
process and listens to User Datagram Protocol (UDP) port 161 for
SNMP request. The snmpdx daemon also opens another port to receive
SNMP trap notifications from various subagents. These traps are
forwarded to various managers, as determined by the configuration
file. The snmpdx daemon reads the /etc/snmp/conf/mibiisa.rsrc file
and then starts the mibiisa process as specified in the file. It
then forwards any relevant incoming SNMP requests to the mibiisa
daemon.
The snmpdx master agent and the mibiisa agent run as daemons with
root privileges on the system. The snmpdx daemon and the mibiisa
daemon are started by default via the /etc/rc3.d/S76snmpdx script.
A format string vulnerability has been discovered in snmpdx and a
buffer overflow found in mibiisa which may be exploited by a local
or a remote attacker to gain root access on the affected system.
Any system that does not run both the Sun Solstice Enterprise Master
Agent, sndmpx, and the Sun SNMP agent, mibiisa, is not vulnerable to
this issue. The format string vulnerability was discovered by Sinan
Eren of Entercept Security Technologies' Ricochet Team.
Entercept's Ricochet Security Advisory is available from:
http://www.entercept.com/dr/snmp/
4. List of Patches
The following patches are in the process of being propagated to the
worldwide SunSolve sites and should be available in the very near
future:
OS Version Patch ID
__________ _________
SunOS 5.8 108869-16
SunOS 5.8_x86 108870-16
SunOS 5.7 107709-19
SunOS 5.7_x86 107710-19
SunOS 5.6 106787-18
SunOS 5.6_x86 106872-18
_______________________________________________________________________________
Sun acknowledges with thanks, Sinan Eren and Entercept's Ricochet Team for
for bringing this issue to our attention and working with us on this
advisory.
_______________________________________________________________________________
APPENDICES
A. Patches listed in this bulletin are available to all Sun customers at:
http://sunsolve.sun.com/securitypatch
B. Checksums for the patches listed in this bulletin are available at:
ftp://sunsolve.sun.com/pub/patches/CHECKSUMS
C. Sun security bulletins are available at:
http://sunsolve.sun.com/security
D. Sun Security Coordination Team's PGP key is available at:
http://sunsolve.sun.com/pgpkey.txt
E. To report or inquire about a security problem with Sun software, contact
one or more of the following:
- Your local Sun answer centers
- Your representative computer security response team, such as CERT
- Sun Security Coordination Team. Send email to:
security-alert@sun.com
F. To receive information or subscribe to our CWS (Customer Warning System)
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security-alert@sun.com
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Note that your-email-address should be substituted
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________________________________________________________________________________
Copyright 2002 Sun Microsystems, Inc. All rights reserved. Sun,
Sun Microsystems, Solaris and SunOS are trademarks or registered trademarks
of Sun Microsystems, Inc. in the United States and other countries. This
Security Bulletin may be reproduced and distributed, provided that this
Security Bulletin is not modified in any way and is attributed to
Sun Microsystems, Inc. and provided that such reproduction and distribution
is performed for non-commercial purposes.
[***** End Sun Microsystems, Inc. Security Bulletin #00219 *****]
_______________________________________________________________________________
CIAC wishes to acknowledge the contributions of Sun Microsystems, Sinan Eren and
Entercept's Ricochet Team for the information contained in this bulletin.
_______________________________________________________________________________
CIAC, the Computer Incident Advisory Capability, 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
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E-mail: ciac@ciac.org
Previous CIAC notices, anti-virus software, and other information are
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PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing
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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
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