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AUSCERT External Security Bulletin Redistribution
ESB-2004.0415 -- Sun Alert Notification - Sun Alert ID: 57476
Security Vulnerability in SunForum Involving the H.323 Protocol
17 June 2004
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AusCERT Security Bulletin Summary
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Product: SunForum
Publisher: Sun Microsystems
Operating System: Solaris
Platform: SPARC
Impact: Denial of Service
Access Required: Remote
Ref: ESB-2004.0029
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DOCUMENT ID: 57476
SYNOPSIS: Security Vulnerability in SunForum Involving the H.323
Protocol
DETAIL DESCRIPTION:
Sun(sm) Alert Notification
* Sun Alert ID: 57476
* Synopsis: Security Vulnerability in SunForum Involving the H.323
Protocol
* Category: Security
* Product: SunForum
* BugIDs: 4978924
* Avoidance: Workaround
* State: Committed
* Date Released: 15-Jan-2004, 16-Jan-2004
* Date Closed:
* Date Modified: 16-Jan-2004, 15-Jun-2004
1. Impact
Unprivileged local or remote users may be able to kill the SunForum
process due to its improper handling of H.323 traffic. This is a type
of Denial of Service (DoS).
This issue is described in NISCC Vulnerability Advisory 006489/H323
(see: [1]http://www.uniras.gov.uk/vuls/2004/006489/h323.htm) which is
referenced in CERT Advisory CA-2004-01 (see:
[2]http://www.cert.org/advisories/CA-2004-01.html).
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* SunForum 3.2 (for Solaris 2.6, 7, 8, and 9) or earlier without
patch 111526-15
* SunForum 3D 1.0 (for Solaris 8 and 9)
3. Symptoms
Should the described issue occur, the affected "SunForum" process may
die due to a segmentation violation ("SEGV" signal). A core file may
be generated in the working directory which "SunForum" was started in.
SOLUTION SUMMARY:
4. Relief/Workaround
Until patches are available and can be applied, sites may wish to
block access to the H.323 services from untrusted networks such as the
Internet. Use a firewall or other packet-filtering technology to block
the appropriate network ports:
* 1720/TCP
* 1720/UDP
Note: These are default ports only and may vary on a site-by-site
basis. Consult your vendor or your firewall documentation for detailed
instructions on how to configure the ports.
5. Resolution
This issue is addressed in the following releases:
* SunForum 3.2 (for Solaris 2.6, 7, 8, and 9) or earlier with patch
111526-15 or later
A final resolution is pending completion.
Change History
16-Jan-2004:
* Updated Impact, Symptoms and Relief/Workaround sections
15-Jun-2004:
* Updated Impact and Relief/Workaround sections
This Sun Alert notification is being provided to you on an "AS IS"
basis. This Sun Alert notification may contain information provided by
third parties. The issues described in this Sun Alert notification may
or may not impact your system(s). Sun makes no representations,
warranties, or guarantees as to the information contained herein. ANY
AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT
YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE
OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN.
This Sun Alert notification contains Sun proprietary and confidential
information. It is being provided to you pursuant to the provisions of
your agreement to purchase services from Sun, or, if you do not have
such an agreement, the Sun.com Terms of Use. This Sun Alert
notification may only be used for the purposes contemplated by these
agreements.
Copyright 2000-2004 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved.
References
1. http://www.uniras.gov.uk/vuls/2004/006489/h323.htm
2. http://www.cert.org/advisories/CA-2004-01.html
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