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             AUSCERT External Security Bulletin Redistribution

                        ESB-2008.0019 -- [Solaris]
        Security Vulnerability in FreeType 2 Font Engine May Allow
                 Privilege Escalation Due to Heap Overflow
                              8 January 2008

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:              FreeType 2
Publisher:            Sun Microsystems
Operating System:     Solaris 10
                      Solaris 9
                      Solaris 8
Impact:               Denial of Service
                      Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-2754

Ref:                  ESB-2007.0400

Original Bulletin:    
  http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-103171-1

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Sun(sm) Alert Notification
     * Sun Alert ID: 103171
     * Synopsis: Security Vulnerability in FreeType 2 Font Engine May
       Allow Privilege Escalation Due to Heap Overflow
     * Category: Security
     * Product: Solaris 9 Operating System, Solaris 10 Operating System,
       Solaris 8 Operating System
     * BugIDs: 6589553
     * Avoidance: Patch
     * State: Resolved
     * Date Released: 06-Jan-2008
     * Date Closed: 06-Jan-2008
     * Date Modified: 

1. Impact

   An integer overflow leading to a heap overflow vulnerability in the
   FreeType 2 Font Engine, which is shipped with Solaris, may affect
   applications that make use of this library. Depending on the
   application, this may allow a local or remote unprivileged user to
   crash the application using FreeType (which is a type of Denial of
   Service), or to execute arbitrary code with the privileges of the
   application.

   This issue is described in the following document:
     * CVE-2007-2754 at:
       http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2754

2. Contributing Factors

   This issue can occur in the following releases:

   SPARC Platform
     * Solaris 8 without patch 124420-03
     * Solaris 9 without patch 116105-08
     * Solaris 10 without patch 119812-05

   x86 Platform
     * Solaris 8 without patch 124421-03
     * Solaris 9 without patch 116106-07
     * Solaris 10 without patch 119813-07

   To determine if an application is linked with the libfreetype library,
   the ldd(1) utility can be utilized as in the following example:
    $ ldd /usr/bin/gedit | grep libfreetype
    libfreetype.so.6 =>      /usr/sfw/lib/libfreetype.so.6

   Note: Applications which don't list the FreeType library as a dynamic
   dependency in the ldd(1) output may open the library during process
   execution using functions such as dlopen(3C) and therefore may still
   be impacted.

3. Symptoms

   If the described issue is exploited to cause a Denial of Service (DoS)
   to an application which links to the libfreetype library, the
   application will exit and may generate an error message about a
   Segmentation Fault, potentially writing a core(4) file. There are no
   predictable symptoms that would indicate the issue has been exploited
   to execute arbitrary code with elevated privileges. 

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 124420-03 or later
     * Solaris 9 with patch 116105-08 or later
     * Solaris 10 with patch 119812-05 or later

   x86 Platform
     * Solaris 8 with patch 124421-03 or later
     * Solaris 9 with patch 116106-07 or later
     * Solaris 10 with patch 119813-07 or later

   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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