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Liebe Kolleginnen und Kollegen,

soeben erreichte uns nachfolgendes Sun Security Advisory. Wir geben
diese Informationen unveraendert an Sie weiter.

CVE-2009-3553 – Schwachstelle in CUPS beim Verarbeiten von
Dateideskriptoren

CUPS verarbeitet Referenzen auf Dateideskriptoren nicht korrekt. Dies
fuehrt zur Referenzierung bereits freigegebener Zeiger und zum Absturz
des Drucksystems. Ein entfernter Angreifer kann diese Schwachstelle zu
einem Denial of Service Angriff ausnutzen.

Betroffen sind die folgenden Software Pakete und Plattformen:

OpenSolaris

SPARC Plattform
* OpenSolaris basierend auf den Builds snv_87 bis snv_130

x86 Plattform
* OpenSolaris basierend auf den Builds snv_87 bis snv_130

Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.

Hersteller Advisory:
http://sunsolve.sun.com/search/document.do?assetkey=1-66-275230-1

(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,
Torsten Voss

– —

Dipl.-Ing.(FH) Torsten Voss (Incident Response Team)

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
Sachsenstrasse 5, 20097 Hamburg/Germany, CEO: Dr. Klaus-Peter Kossakowski

17. DFN Workshop “Sicherheit in vernetzten Systemen” 09./10.02.2010
Informationen unter https://www.dfn-cert.de/veranstaltungen/workshop.html

Alert URL: http://sunsolve.sun.com/search/document.do?assetkey=1-66-275230-1
Sun Security Alert: 275230

A “use-after-free” Vulnerability in the OpenSolaris Common Unix
Printing System (CUPS) may Lead to a Denial of Service (DoS) Condition
__________________________________________________________________

Category : Security
Release Phase : Resolved
Bug Id : 6900557
Product : OpenSolaris
Date of Resolved Release : 07-Jan-2010
A “use-after-free” security vulnerability has been identified in the Common Uni
x Printing System (CUPS):

1. Impact
A “use-after-free” security vulnerability has been identified in the
Common Unix Printing System (CUPS) related to handling references in
its file descriptors-handling interface. This vulnerability may allow a
local or remote unprivileged user to crash cupsd(8) via a specially
crafted query to get the list of current print jobs for a specific
printer, resulting in a Denial of Service (DoS).
This issue is also described in the following document:
CVE-2009-3553 at:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3553
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* OpenSolaris based upon builds snv_87 through snv_130

x86 Platform
* OpenSolaris based upon builds snv_87 through snv_130

Note 1: Solaris 8, 9 and 10 are not impacted by this issue.
Note 2: OpenSolaris distributions may include additional bug fixes
above and beyond the build from which it was derived. To determine the
base build of OpenSolaris, the following command can be used:
$ uname -v
snv_86

Note 3: This vulnerability only affects OpenSolaris systems which have
installed the CUPS package (SUNWcups). The SUNWcups package is not
installed by default. To determine if the SUNWcups package is
installed, the following command can be run:
$ pkg info SUNWcups

Note 4: This vulnerability only affects OpenSolaris systems which have
configured and enabled CUPS for printing. To determine if CUPS has
been enabled, the following command can be run:
$ svcs cups/in-lpd
STATE STIME FMRI
enabled 20:03:32 svc:/application/cups/in-lpd:default

3. Symptoms
If the described issue has been exploited to cause a Denial of Service
(DoS), cupsd(8) will crash, potentially leaving a core file depending
on the system configuration.
4. 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
* OpenSolaris based upon builds snv_131 or later

x86 Platform
* OpenSolaris based upon builds snv_131 or later

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 2000-2009 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved.
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