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AUSCERT External Security Bulletin Redistribution
ESB-2007.0475 -- [Solaris]
A Security Vulnerability in the Implementation of the RPCSEC_GSS API
Affects the Kerberos Administration Daemon (kadmind(1M))
4 July 2007
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AusCERT Security Bulletin Summary
---------------------------------
Product: kadmind
Publisher: Sun Microsystems
Operating System: Solaris
Impact: Root Compromise
Access: Remote/Unauthenticated
CVE Names: CVE-2007-2443 CVE-2007-2442
Ref: AL-2007.0078
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102914-1
Revision History: July 4 2007: Patches for Solaris 9 released
June 28 2007: Initial Release
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Sun(sm) Alert Notification
* Sun Alert ID: 102914
* Synopsis: A Security Vulnerability in the Implementation of the
RPCSEC_GSS API Affects the Kerberos Administration Daemon
(kadmind(1M))
* Category: Security
* Product: Solaris 9 Operating System, Solaris 10 Operating System,
Solaris 8 Operating System
* BugIDs: 6554841
* Avoidance: Patch
* State: Resolved
* Date Released: 26-Jun-2007, 02-Jul-2007
* Date Closed: 02-Jul-2007
* Date Modified: 02-Jul-2007
1. Impact
A security vulnerability in the implementation of the RPCSEC_GSS API,
which impacts applications utilizing this API (rpcsec_gss(3NSL)) such
as the kadmind(1M) daemon, may allow execution of arbitrary commands.
In the case of Kerberos Key Distribution Centers(KDC) (which run
kadmind(1M)) an unprivileged and unauthenticated remote user may be
able to execute arbitrary commands on the system with the privileges
of the kadmind(1M) daemon (usually 'root').
In addition, on KDC systems this issue may allow the remote user to
compromise the Kerberos key database or cause the affected program to
crash, which is a form of Denial of Service (DoS).
This issue is referenced in the following documents:
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2007-004.txt
CVE-2007-2442 at
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2442
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* Solaris 8 without patch 126928-01
* Solaris 9 without patch 113318-31
* Solaris 10 without patch 123809-02
x86 Platform
* Solaris 8 without patch 126929-01
* Solaris 9 without patch 117468-17
* Solaris 10 without patch 126837-01
Note: This issue can only occur if a system is configured as a
Kerberos Key Distribution Center (KDC).
To determine if a system is configured as a Kerberos Key Distribution
Center (KDC) the following command can be run:
% ps -ef | grep kadmin
root 321 1 0 Dec 10 0:00 /usr/krb5/lib/kadmind
If (as in the above example) the kadmind(1M) daemon is running, then
the machine is configured as a Kerberos Key Distribution Center (KDC)
and may be vulnerable to this issue.
Note: The vulnerability described in CVE-2007-2443
(http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2443) does
not affect the Solaris implementation of the RPCSEC_GSS API.
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. Please see the Resolution
section below.
5. Resolution
This issue is addressed in the following releases:
SPARC Platform
* Solaris 8 with patch 126928-01 or later
* Solaris 9 with patch 113318-31 or later
* Solaris 10 with patch 123809-02 or later
x86 Platform
* Solaris 8 without patch 126929-01 or later
* Solaris 9 with patch 117468-17 or later
* Solaris 10 with patch 126837-01 or later
Change History
02-Jul-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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