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AUSCERT External Security Bulletin Redistribution
ESB-2007.0365 -- [Solaris]
Security Vulnerability in the Kerberos kadm5 Library May
Allow Execution of Arbitrary Code
20 August 2007
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AusCERT Security Bulletin Summary
---------------------------------
Product: kadm5
Publisher: Sun Microsystems
Operating System: Solaris 8,9,10
Impact: Execute Arbitrary Code/Commands
Access: Remote/Unauthenticated
CVE Names: CVE-2007-0957
Ref: AL-2007.0040
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102930-1
Revision History: August 20 2007: Issue resolved
May 31 2007: SEAM 1.0.1 for Solaris 8 patches available
June 20 2007: Sun releases Solaris 10 patches.
May 31 2007: Initial Release
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Sun(sm) Alert Notification
* Sun Alert ID: 102930
* Synopsis: Security Vulnerability in the Kerberos kadm5 Library May
Allow Execution of Arbitrary Code
* Category: Security
* Product: Solaris 9 Operating System, Solaris 10 Operating System,
Solaris 8 Operating System
* BugIDs: 6538001
* Avoidance: Patch
* State: Resolved
* Date Released: 29-May-2007, 13-Aug-2007
* Date Closed: 13-Aug-2007
* Date Modified: 18-Jun-2007, 31-Jul-2007, 13-Aug-2007
1. Impact
A security vulnerability in the kadm5 library shipped with Solaris may
allow a remote authenticated user to command a host running
kadmind(1M) and execute arbitrary code with the privileges of the
kadmind process (usually 'root'). This issue affects systems
configured as Kerberos Key Distribution Centers(KDC).
In addition, this issue may allow the remote user to compromise the
Kerberos key database or cause the affected program to crash, causing
a Denial of Service(DOS).
This issue is also described in the following documents:
CVE-2007-0957 at
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0957
MIT krb5 Security Advisory 2007-002 at
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2007-002-sysl
og.txt
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* SEAM 1.0.1 (for Solaris 8) without patch 110060-22
* Solaris 8 without patch 109223-10
* Solaris 9 without patches 112921-09, 112923-04 and
112925-07
* Solaris 10 without patch 120473-10
x86 Platform
* SEAM 1.0.1 (for Solaris 8) without patch 110061-22
* Solaris 8 without patch 109224-10
* Solaris 9 without patches 116044-04, 116045-02,
116046-09 and 116175-05
* Solaris 10 without patch 120037-20
Note: This issue can only occur if the system is configured as a
Kerberos Key Distribution Center(KDC).
To determine if a system is configured as a KDC, the following command
can be run:
% ps -ef | grep kadmin
root 321 1 0 Dec 10 ? 0:00 /usr/krb5/lib/kadmind
If the above command shows that the kadmind(1M) daemon is running,
then the machine is configured as a KDC and is vulnerable.
3. Symptoms
There are no predictable symptoms that would indicate this issue has
been exploited to execute arbitrary code with elevated privileges on a
system.
4. Relief/Workaround
While it is possible to disable kadmind(1M), this would take down all
administrative functionality of the Kerberos environment. The Kerberos
realm itself would remain usable while kadmind is down.
5. Resolution
This issue is addressed in the following releases:
SPARC Platform
* SEAM 1.0.1 (for Solaris 8) with patch 110060-22 or later
* Solaris 8 with patch 109223-10 or later
* Solaris 9 with patches 112921-09, 112923-04 and
112925-07 or later (for all patches)
* Solaris 10 with patch 120473-10 or later
x86 Platform
* SEAM 1.0.1 (for Solaris 8) with patch 110061-22 or later
* Solaris 8 with patch 109224-10 or later
* Solaris 9 with patches 116044-04, 116045-02, 116046-09
and 116175-05 or later (for all patches)
* Solaris 10 with patch 120037-20 or later
Note: When SEAM 1.0.1 is run on a Solaris 8 system, both the SEAM
1.0.1 and Solaris 8 patches listed above should be installed to
resolve this issue.
Change History
18-Jun-2007:
* Updated Contributing Factors and Resolution sections
31-Jul-2007:
* Updated Contributing Factors, Relief/Workaround and
Resolution sections
13-Aug-2007:
* Updated Contributing Factors and Resolution sections
* State: Resolved
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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