Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2003.0440 -- Sun(sm) Alert Notification
(Sun Alert ID: 55440) - syslogd(1M) Does Not Properly Handle Large
syslog(3C) Packets
25 June 2003
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: syslogd
Publisher: Sun Microsystems
Operating System: Solaris
Platform: SPARC
i386
Impact: Denial of Service
Access Required: Remote
- --------------------------BEGIN INCLUDED TEXT--------------------
DOCUMENT ID: 55440
SYNOPSIS: syslogd(1M) Does Not Properly Handle Large syslog(3C)
Packets and May Allow an Unprivileged User to Cause a Denial of Service
DETAIL DESCRIPTION:
Sun(sm) Alert Notification
* Sun Alert ID: 55440
*Synopsis: syslogd(1M) Does Not Properly Handle Large syslog(3C)
Packets and May Allow an Unprivileged User to Cause a Denial of
Service
*Category: Security
*Product: Solaris
* BugIDs: 4812764
* Avoidance: Patch
*State: Resolved
* Date Released: 23-Jun-2003
* Date Closed: 23-Jun-2003
* Date Modified:
1. Impact
A local or remote unprivileged user may be able to terminate the
syslogd(1M) daemon on a Solaris system by sending large sized syslog(3C)
packets. As a result, system messages are no longer forwarded to log
files or users as configured in the syslog.conf(4) file, which is a type
of Denial of Service (DoS).
This issue is described in:
http://www.securityfocus.com/archive/1/324015/2003-06-05/2003-06-11/0
Sun acknowledges with thanks, David Thiel, for bringing this issue to
our attention.
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* Solaris 2.6 without patch 106439-13
* Solaris 7 without patch 106541-25
* Solaris 8 without patch 110945-08
* Solaris 9 without patch 112998-03
x86 Platform
* Solaris 2.6 without patch 106440-14
* Solaris 7 without patch 106542-25
* Solaris 8 without patch 110946-08
* Solaris 9 without patch 114932-01
3. Symptoms
If the syslogd(1M) daemon is no longer running, the system may have
encountered the described issue. The following command can be executed
to check if the "/usr/bin/syslog" process and the syslogd(1M) daemon are
running on the system:
$ */usr/bin/ps -ef | grep syslogd
root 336 1 0 Jun 12 ? 0:03 */usr/sbin/syslogd*
The output as shown above indicates that the syslogd(1M) daemon is running.
SOLUTION SUMMARY:
4. Relief/Workaround
There is no workaround. Please see the "Resolution" section below.
5. Resolution
This issue is addressed in the following releases:
SPARC Platform
* Solaris 2.6 with patch 106439-13 or later
* Solaris 7 with patch 106541-25 or later
* Solaris 8 with patch 110945-08 or later
* Solaris 9 with patch 112998-03 or later
x86 Platform
* Solaris 2.6 with patch 106440-14 or later
* Solaris 7 with patch 106542-25 or later
* Solaris 8 with patch 110946-08 or later
* Solaris 9 with patch 114932-01 or later
/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 2000-2003 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved./
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to use any or all of this information is
the responsibility of each user or organisation, and should be done so in
accordance with site policies and procedures.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
http://www.auscert.org.au/render.html?cid=1980
If you believe that your system has been compromised, contact AusCERT or
your representative in FIRST (Forum of Incident Response and Security
Teams).
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business
hours which are GMT+10:00 (AEST). On call after hours
for member emergencies only.
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
iQCUAwUBPvjvaih9+71yA2DNAQHcdQP4ojJD10OI3h4B51FavuAAIGojrfRnMDiN
DAsj6lTCeUXIMhQwKvloDfq14vCD8ctOL0fPUvsgcq3/q3FJH9uf7C7+SpFrn/LJ
O6Ad0sD/mNm2LJ5iAoZ+DaRoYIJaFOyfwL75ptwRRR2Jy0zq/ZEXWJNhrDYK6BrI
mfJYdHo9kA==
=LhBZ
-----END PGP SIGNATURE-----