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Category:   Application (Web Browser)  >   Mozilla Browser Vendors:
(HP Issues Fix for Mozilla for Tru64) libpng Buffer Overflows May Let Remote Users Crash the Application or Execute Arbitrary Code
SecurityTracker Alert ID:  1010884
SecurityTracker URL:
CVE Reference:   CVE-2004-0597, CVE-2004-0598, CVE-2004-0599   (Links to External Site)
Date:  Aug 6 2004
Impact:   Denial of service via network, Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.7 and prior versions
Description:   Several buffer overflow vulnerabilities were reported in libpng. A remote user may be able to execute arbitrary code on the target system. Mozilla is affected.

Red Hat reported that Chris Evans discovered several buffer overflows in libpng during a code audit.

A remote user can create a specially crafted PNG file that, when opened by a target user with an application that uses libpng, will execute arbitrary code on the target user's system [CVE: CVE-2004-0597].

A NULL pointer dereference vulnerability [CVE: CVE-2004-0598] and several integer overflow issues [CVE: CVE-2004-0599] were also reported to be able to cause an affected application to crash when opening a malicious file.

Impact:   A remote user may be able to cause an affected application to crash or execute arbitrary code. The specific impact depends on the application using libpng.
Solution:   HP has issued a fix for Mozilla (which is affected by the libpng vulnerability), available at:

Vendor URL: (Links to External Site)
Cause:   Boundary error
Underlying OS:  UNIX (Tru64)
Underlying OS Comments:  5.1A, 5.1B

Message History:   This archive entry is a follow-up to the message listed below.
Aug 4 2004 libpng Buffer Overflows May Let Remote Users Crash the Application or Execute Arbitrary Code

 Source Message Contents

Subject:  SSRT4778 - rev.0 Mozilla Application Suite for HP Tru64 UNIX - libpng



SSRT4778 - rev.0 Mozilla Application Suite for HP Tru64 UNIX - libpng Potential Overflows


There are no restrictions for distribution of this Bulletin provided that it remains 
complete and intact.

The information in this Security bulletin should be acted upon as soon as possible.

04 August 2004


     Remotely exploitable integer and buffer overflows.

HP Software Security Response Team

CERT VU#388984, VU#817368, VU#236656, VU#477512, VU#160448, VU#286464
     Several potential security vulnerabilities have been identified in
     libpng (portable network graphics library) used by the Mozilla
     Application Suite for HP Tru64 UNIX. These potential vulnerabilities
     could be remotely exploitable, resulting in buffer overruns or
     integer overflows.
SUPPORTED SOFTWARE VERSIONS*:  ONLY impacted versions are listed.
     Mozilla Application Suite for HP Tru64 UNIX versions earlier than 1.7

     The Mozilla Application Suite for HP Tru64 UNIX is provided for
     use on the supported base levels of HP Tru64 UNIX 5.1A and 5.1B.
     HP has corrected these potential vulnerabilities by releasing
     the kit identified in the resolution section below.

     For a listing of all Tru64 UNIX security patch kits please see the following web site:

     Mozilla Application Suite for HP Tru64 UNIX V1.7

     The Mozilla Application Suite for HP Tru64 UNIX is provided for use on the
     supported base levels of HP Tru64 UNIX 5.1A and 5.1B. Supported versions

               o HP Tru64 UNIX 5.1B PK4 (BL25)

               o HP Tru64 UNIX 5.1B PK3 (BL24)

               o HP Tru64 UNIX 5.1A PK6 (BL24)

           V1.7 web kits can be downloaded from the following sites:

           The Mozilla site:

           The download site for HP Tru64 UNIX internet and networking software:

* The software product category that this Security Bulletin relates to is represented by 
the 5th and 6th characters of the Bulletin number: GN=General, MA=Management Agents, 
MI=Misc. 3rd party, MP=HP-MPE/iX, NS=HP NonStop Servers, OV=HP OpenVMS, PI=HP Printing & 
Imaging, ST=HP Storage, TU=HP Tru64 UNIX, TL=Trusted Linux, UX=HP-UX, VV=Virtual Vault

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