#200871: libpng(3) Contains a Denial of Service (DoS) Vulnerability

libpng(3) Contains a Denial of Service (DoS) Vulnerability

Category :	Security
Release Phase :	Workaround
Bug Id :	6555900
Product :	Solaris 8 Operating System Solaris 9 Operating System Solaris 10 Operating System
Date of Workaround Release :	28-JUN-2007

A remote unprivileged user may be able to crash an application which dynamically links to the Portable Network Graphics library (see below for details) :

1. Impact

A remote unprivileged user may be able to crash an application which dynamically links to the Portable Network Graphics library (libpng(3)) due to a security vulnerability in libpng(3). The ability to crash an application is a type of Denial of Service (DoS). A number of applications which comprise the GNOME desktop environment dynamically link with libpng(3).

This issue is described in the following documents:

CERT VU# 684664 at: https://www.kb.cert.org/vuls/id/684664
CVE-2007-2445 at: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2445

2. Contributing Factors

This issue can occur in the following releases:

SPARC Platform

Solaris 8 without patch 114816-03
Solaris 9 without patch 139382-01 and 114822-05
Solaris 10 without patch 137080-01

x86 Platform

Solaris 8 without patch 114817-03
Solaris 9 without patch 139383-01
Solaris 9 with JDS release 2
Solaris 10 without patch 137081-01

To determine if JDS release 2 is installed on a Solaris 9 x86 system, the following command can be run:

    % grep distributor-version /usr/share/gnome-about/gnome-version.xml
    <distributor-version>Sun Java Desktop System, Release 2</distributor-version>

3. Symptoms

If the described issue occurs, the application which links to the libpng(3) library will exit and may generate an error message about a Segmentation Fault and may also write a core(4) file.

4. Workaround

To work around the described issue, only load images from trusted sources.

5. Resolution

This issue is addressed in the following releases:

SPARC Platform

Solaris 8 with patch 114816-03 or later
Solaris 9 with patch 139382-01 or later and 114822-05 or later
Solaris 10 with patch 137080-01 or later

x86 Platform

Solaris 8 with patch 114817-03 or later
Solaris 9 with patch 139383-01 or later
Solaris 10 with patch 137081-01 or later

A final resolution is pending completion for Solaris 9 with JDS release 2.

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Copyright 2000-2008 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved.

Modification History

11-Feb-2008: Updated Contributing Factors and Resolution sections
23-May-2008: Updated for minor clarifications
02-Sep-2008: Updated Contributing Factors and Resolution sections
16-Oct-2008: Updated Contributing Factors and Resolution sections

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