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AUSCERT External Security Bulletin Redistribution
ESB-2007.0027 -- [Solaris]
Third-party Applications Using GSS-API May Be Vulnerable to Compromise
12 January 2007
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AusCERT Security Bulletin Summary
---------------------------------
Product: libgss(3LIB)
Publisher: Sun Microsystems
Operating System: Solaris 8, 9 and 10
Impact: Execute Arbitrary Code/Commands
Access: Remote/Unauthenticated
CVE Names: CVE-2006-6144
Ref: AL-2007.0008
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102772-1
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Sun(sm) Alert Notification
This is a preliminary Sun Alert notification. Sun provides these
notices in an effort to allow customers to implement mitigation
strategies while these issues are being investigated. The information
contained in these documents is likely to change as more is learned
about the applicable issues. At the time of publication, workarounds
and/or final resolutions are not available for the issues. Preliminary
Sun Alert notifications will be updated as more information becomes
available.
* Sun Alert ID: 102772
* Synopsis: Third-party Applications Using GSS-API May Be Vulnerable
to Compromise
* Category: Security
* Product: Solaris 9 Operating System, Solaris 10 Operating System,
Solaris 8 Operating System
* BugIDs: 6510866
* Avoidance: None
* State: Preliminary
* Date Released: 09-Jan-2007
* Date Closed:
* Date Modified: 10-Jan-2007
1. Impact
Third-party applications which utilize GSS-API and thus link to the
Generic Security Services library libgss(3LIB), may allow an
unauthenticated user (local or remote depending on the application)
the ability to execute arbitrary code with the privileges of the
application.
Note: Exploitation of this vulnerability is believed to be difficult.
No exploit code is known to exist at this time.
This issue is referenced in the following documents:
MITKRB5-SA-2006-003 - MIT krb5 Security Advisory 2006-003 at
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2006-003-mechglue
.txt
CVE-2006-6144 at
http://cve.mitre.org/cgi-bin/cvename.cgi?name=2006-6144
CERT VU#831452 at http://www.kb.cert.org/vuls/id/831452
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* Solaris 8
* Solaris 9
* Solaris 10
x86 Platform
* Solaris 8
* Solaris 9
* Solaris 10
Notes:
1. This issue only affects applications which link against the
Generic Security Services library libgss(3LIB).
2. No applications shipped by Sun, including kadmind(1M), are
affected by this issue.
To determine if an application is linked against libgss(3LIB) the
following command can be run:
$ ldd application | grep libgss || echo "application not affected"
If output similar to the following is seen:
libgss.so.1 => /usr/lib/libgss.so.1
then the application links to libgss(3LIB) and may be affected by this
issue.
3. Symptoms
There are no reliable symptoms that would indicate this issue has been
exploited to execute arbitrary code with elevated privileges on a
system.
4. Relief/Workaround
There is no workaround for this issue.
5. Resolution
A final resolution is pending completion.
Change History
10-Jan-2007:
* Updated Impact statement and URL
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 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved
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