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Liebe Kolleginnen und Kollegen,

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

CVE-2009-1492 – Buffer Overflow in der Funktion getAnnots() des Acrobat
Reader

In der Funktion getAnnots() des JavaScript API im Adobe Reader werden
Eingabedaten nicht hinreichend gefiltert. Wird ein PDF Dokument
geoeffnet, das eine Notiz (annotation) enthaelt und einen OpenAction
Eintrag mit einem Java-Skript welches die Funktion getAnnots() mit
speziell gewaehlten Integer Werten aufruft, kann ein Buffer Overflow
ausgeloest werden. Ein entfernter Angreifer kann diese Schwachstelle
ausnutzen um beliebige Befehle mit den Rechten des Benutzers zur
Ausfuehrung zu bringen, wenn es ihm gelingt diesen zu verleiten ein
entsprechend manipuliertes PDF Dokument zu oeffnen.

CVE-2009-1493 – Buffer Overflow in der Funktion customDictionaryOpen()
des Acrobat Reader

Die Funktion customDictionaryOpen() des JavaScript API im Adobe Reader
behandelt Benutzereingaben nicht sicher. Wird diese Funktion mit
bestimmten Paramentern aufgerufen, kann ein Buffer Overflow ausgeloest
werden. Ein entfernter Angreifer kann diese Schwachstelle ausnutzen um
beliebige Befehle mit den Rechten des Benutzers zur Ausfuehrung zu
bringen, wenn es ihm gelingt diesen zu verleiten ein entsprechend
manipuliertes PDF Dokument zu oeffnen.

Betroffen sind die folgenden Software Pakete und Plattformen:

Adobe Reader

SPARC Plattform
* Solaris 10 ohne Interim Security Relief IDR141813-01

Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.

Hersteller Advisory:
http://sunsolve.sun.com/search/document.do?assetkey=1-66-259028-1

(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,
Jan Kohlrausch (CSIRT), Phone +49 40 808077-555

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

CarmentiS – Early Warning Expertise
https://www.carmentis.org

Solution Type Sun Alert
Solution 259028 : Multiple Security Vulnerabilities in Adobe Reader
for Solaris 10 May Allow Execution of Arbitrary Code or Cause Denial of
Service (DoS)
Related Categories

* Home>Content>Sun Alert Criteria Categories>Security
* Home>Content>Sun Alert Release Phase>Workaround

Bug ID
6836837

Product
Solaris 10 Operating System

Date of Workaround Release
13-May-2009

SA Document Body
Multiple Security Vulnerabilities in Adobe Reader for Solaris 10 … see below
for full details:

1. Impact

Multiple security vulnerabilities in Adobe Reader 9.1 and earlier for
Solaris 10 may allow remote unprivileged users to execute arbitrary
code
or crash the Adobe Reader application, thereby causing a Denial of
Service (DoS) condition. These vulnerabilities may be exploited via
specially crafted PDF files.
Following resources document these issues in more detail.
* APSA09-02 at
http://www.adobe.com/support/security/advisories/apsa09-02.html
* APSB09-06 at
http://www.adobe.com/support/security/bulletins/apsb09-06.html
* CVE-2009-1492 at
http://cve.mitre.org/cgi-bin/cvename.cgi?name=2009-1492
* CVE-2009-1493 at
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1493

2. Contributing Factors

These issues can occur in the following release:
SPARC Platform
* Solaris 10

Notes:

1. Solaris 8, Solaris 9, Solaris 10 on the x86 platform and OpenSolaris
do not ship Adobe Reader and therefore are not affected by this issue.
2. All versions of Adobe Reader up to and including version 7.0.9 and
versions 8.0 through 9.1 are affected by these issues.
To determine the version of Adobe Reader installed on the system, the
following command can be run:
$ /usr/bin/acroread -version
7.0.1

Earlier versions of Adobe Reader on Solaris 10 only shipped acroread in
/usr/sfw/bin which do not support the ‘-version’ option, so for such
instances, the following command can be used instead:
$ cat `pkgchk -l -P AcroVersion | awk ‘/Pathname/ { print $2 }’`
5.0.10

3. Symptoms

If the described issues have been exploited to cause a Denial of
Service
(DoS), the Adobe Reader application will crash, potentially leaving a
core file depending on the system configuration.
There are no predictable symptoms that would indicate that these issues
have been exploited to execute arbitrary code.

4. Workaround

To avoid the described issues, do not load PDF files from untrusted
sources.
Disabling JavaScript prevents these vulnerabilities from being
exploited. Acrobat JavaScript can be disabled in the General
preferences
dialog of Adobe Reader with the following:
1. Edit -> Preferences

2. Select the JavaScript category.

3. Un-check ‘Enable Acrobat JavaScript’

4. Click OK.
Until patches can be applied, the risk of these vulnerabilities can be
mitigated by preventing PDF documents from being opened automatically
by
the Web browser. In Firefox 2.0, this can be set by changing the
default
action for PDF documents with the following:
1. Open the Preferences dialog from the Edit menu

2. Select Contents tab.

3. Click on Manage button in File Types block.

4. Select PDF in the list and click Change Action.

5. Select ‘Save them on my computer’ option and click OK.
Note that this workaround will reduce the risk of exploitation but will
not prevent the issue from being exploited.

Interim Security Relief (ISR) is available from
http://sunsolve.sun.com/tpatches for the following release:
SPARC Platform
* Solaris 10 IDR141813-01

Note: This document refers to one or more Interim Security Relief
(ISRs) which are designed
to address the concerns identified herein. Sun has limited experience
with these (ISRs) due
to their interim nature. As such, you should only install the ISRs on
systems meeting the
configurations described above. Sun may release full patches at a later
date, however,
Sun is under no obligation whatsoever to create, release, or distribute
any such patch.

5. Resolution

A final resolution is pending completion.

For more information on Security Sun Alerts, see Technical Instruction
ID 213557
http://sunsolve.sun.com/search/document.do?assetkey=1-61-213557-1

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.
Modification History
22-May-2009: Updated Workaround section

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