Date: 29 October 2007
References: AL-2007.0107 AU-2007.0019
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AUSCERT External Security Bulletin Redistribution
ESB-2007.0683 -- [Solaris]
Security Vulnerability in RPCSEC_GSS (rpcsec_gss(3NSL))
Affects Kerberos Administration Daemon (kadmind(1M))
29 October 2007
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kadmind
Publisher: Sun Microsystems
Operating System: Solaris 8
Solaris 9
Solaris 10
Impact: Execute Arbitrary Code/Commands
Access: Remote/Unauthenticated
CVE Names: CVE-2007-4000 CVE-2007-3999
Ref: AU-2007.0019
AL-2007.0107
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-103060-1
Revision History: October 29 2007: Sun Updated multiple sections
October 18 2007: Patches released Solaris 9 and 10
October 12 2007: Updated Workaround Patches
September 7 2007: Initial Release
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Sun(sm) Alert Notification
* Sun Alert ID: 103060
* Synopsis: Security Vulnerability in RPCSEC_GSS (rpcsec_gss(3NSL))
Affects Kerberos Administration Daemon (kadmind(1M))
* Category: Security
* Product: Solaris 9 Operating System, Solaris 10 Operating System,
Solaris 8 Operating System
* BugIDs: 6591024
* Avoidance: Patch
* State: Resolved
* Date Released: 05-Sep-2007, 22-Oct-2007
* Date Closed: 22-Oct-2007
* Date Modified: 10-Oct-2007, 16-Oct-2007, 22-Oct-2007
1. Impact
A stack overflow vulnerability in the RPCSEC_GSS (see
rpcsec_gss(3NSL)) security flavor used to access the Generic Security
Services Application Programming Interface (GSS-API) affects the
Kerberos administration daemon (kadmind(1M)). This vulnerability may
allow an unauthorized remote user the ability to execute arbitrary
commands on Kerberos Key Distribution Center(KDC) systems with the
privileges of the kadmind(1M) daemon (usually root). This may also
allow the remote user to compromise the Kerberos key database or cause
the kadmind(1M) daemon to crash, which is a type of Denial of Service
(DoS).
Note: Third-party applications which utilize RPCSEC_GSS may also be
affected.
This issue is also referenced in the following documents:
MITKRB5-SA-2007-006 at:
* http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2007-006.txt
CVE-2007-3999 at:
* http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3999
Note: Solaris is not affected by CVE-2007-4000 mentioned in
MITKRB5-SA-2007-006.
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* Solaris 8 without patch 126928-02
* Solaris 9 without patch 113318-32
* Solaris 10 without patch 126661-02
x86 Platform
* Solaris 8 without patch 126929-02
* Solaris 9 without patch 117468-18
* Solaris 10 without patch 126662-02
Note: This issue only occurs if the system is configured as a Key
Distribution Center (KDC).
To determine if the system is configured as a Key Distribution Center,
the following command can be used:
% pgrep -l kadmind
938 kadmind
If the above command shows a process id, the daemon kadmind(1M) is
running and the machine is configured as the Key Distribution Center
(KDC).
3. Symptoms
There are no predictable symptoms that would indicate the described
vulnerability has been exploited.
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 8 with patch 126928-02 or later
* Solaris 9 with patch 113318-32 or later
* Solaris 10 with patch 126661-02 or later
x86 Platform
* Solaris 8 with patch 126929-02 or later
* Solaris 9 with patch 117468-18 or later
* Solaris 10 with patch 126662-02 or later
Change History
10-Oct-2007:
* Updated Relief/Workaround section
16-Oct-2007:
* Updated Contributing Factors, Relief/Workaround, and Resolution
sections
22-Oct-2007:
* State: Resolved
* Updated Contributing Factors and Resolution 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 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved
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