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Liebe Kolleginnen und Kollegen,
soeben erreichte uns nachfolgendes Sun Security Advisory. Wir geben
diese Informationen unveraendert an Sie weiter.
CVE-2008-4556 – Buffer Overflow im sadmind der Sun Solstice AdminSuite
In der Funktion adm_build_path() des sadmind der Sun Solstice
AdminSuite laesst sich ein Stack-basierter Buffer Overflow ausloesen.
Ein entfernter Angreifer kann so beliebige Befehle mit root Rechten
ausfuehren, wenn der sadmind eine entsprechend formulierte Anfrage des
Angreifers annimmt.
Ein Exploit zur Ausnutzung der Schwachstelle ist bereits oeffentlich
verfuegbar.
Die Existenz der Schwachstelle koennen Sie wie folgt erkennen:
Wenn der sadmind installiert ist, sollte eine entsprechende Zeile in
der inetd.conf stehen:
$ grep sadmind /etc/inet/inetd.conf 100232/10 tli rpc/udp wait root
/usr/sbin/sadmind sadmind
Betroffen sind die folgenden Software Pakete und Plattformen:
Solaris 8
Solaris 9
SPARC Plattform
* Solaris 8 Operating System
* Solaris 9 Operating System
x86 Plattform
* Solaris 8 Operating System
* Solaris 9 Operating System
Weiterhin existieren Workarounds:
Als Workaround kann der sadmind abgeschaltet werden. Dazu muss die
entsprechende Zeile in der Datei /etc/initd.conf auskommentiert und der
indetd neu gestartet werden.
Hersteller Advisory:
http://sunsolve.sun.com/search/document.do?assetkey=1-66-245806-1
(c) der deutschen Zusammenfassung bei DFN-CERT Services GmbH; die
Verbreitung, auch auszugsweise, ist nur unter Hinweis auf den Urheber,
DFN-CERT Services GmbH, und nur zu nicht kommerziellen Zwecken
gestattet.
Mit freundlichen Gruessen,
Klaus Moeller, DFN-CERT
Solution Type Sun Alert
Solution 245806 : A Buffer Overflow Security Vulnerability in the
Solaris sadmind(1M) Daemon May Lead to Execution of Arbitrary Code
Related Categories
* Home>Content>Sun Alert Criteria Categories>Security
* Home>Content>Sun Alert Release Phase>Workaround
Bug ID
6710920
Product
Solaris 8 Operating System
Solaris 9 Operating System
Date of Workaround Release
14-Nov-2008
SA Document Body
A Buffer Overflow Security Vulnerability in the Solaris sadmind(1M) Daemon May
Lead to Execution of Arbitrary Code
1. Impact
A buffer overflow security vulnerability in the Solaris sadmind(1M)
daemon may allow a local or remote unprivileged user to execute
arbitrary code with root privileges.
Sun acknowledges with thanks, Adriano Lima of RISE security for
bringing this issue to our attention.
This issue is described in the following documents:
RISE-2008001 at http://risesecurity.org/advisories/RISE-2008001.txt
CVE-2008-4556 at
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4556
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* Solaris 8 Operating System
* Solaris 9 Operating System
x86 Platform
* Solaris 8 Operating System
* Solaris 9 Operating System
Note: Solaris 10 and OpenSolaris do not ship with sadmind(1M) and
therefore are not affected by this issue.
To determine if sadmind(1M) is enabled on the system, the following
command can be run:
$ grep sadmind /etc/inet/inetd.conf
100232/10 tli rpc/udp wait root /usr/sbin/sadmind sadmind
3. Symptoms
There are no predictable symptoms that would indicate this issue has
been exploited to execute arbitrary code.
4. Workaround
To work around this issue, sadmind(1M) can be disabled by doing the
following:
1. Edit the ‘/etc/inetd.conf’ file as the root user to comment out the
entry for sadmind(1M). This entry will then read as:
#100232/10 tli rpc/udp wait root /usr/sbin/sadmind sadmind
2. Restart the inetd(1M) process to reread the newly modified
‘/etc/inetd.conf’ file. This may be done using the following command:
# /usr/bin/pkill -HUP inetd
5. Resolution
A final resolution is pending completion.
For more information on Security Sun Alerts, see Technical Instruction
ID 213557.
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 2000-2008 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved.
Attachments
This solution has no attachment
– —
Dipl. Inform. Klaus Moeller (Incident Response Team)
Phone: +49 40 808077-555, Fax: +49 40 808077-556
DFN-CERT Services GmbH, https://www.dfn-cert.de, Phone +49 40 808077-555
Sitz / Register: Hamburg, AG Hamburg, HRB 88805, Ust-IdNr.: DE 232129737
Sachsenstrase 5, 20097 Hamburg/Germany, CEO: Dr. Klaus-Peter Kossakowski
Automatische Warnmeldungen https://www.cert.dfn.de/autowarn
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