From: Russ Cooper (Russ.CooperTRUSECURE.CA)
Date: Tue Apr 12 2005 - 12:45:43 CDT

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Microsoft Security Bulletin MS05-009:
Vulnerability in PNG Processing Could Allow Remote Code Execution (890261)

Bulletin URL:
<http://www.microsoft.com/technet/security/Bulletin/MS05-009.mspx>

Reason for Revision: Bulletin updated to announce the availability of an updated package for Microsoft Windows Messenger version 4.7.0.2009 (when running on Windows XP Service Pack 1)
Version Number: 2.0
Issued Date: Tuesday, February 08, 2005
Revision Date: Tuesday, April 12, 2005
Impact of Vulnerability: Remote Code Execution
Maximum Severity Rating: Critical
Patch(es) Replaced: This bulletin replaces a prior security update. See the frequently asked questions (FAQ) section of this bulletin for the complete list.
Caveats: Starting February 10, 2005, the MSN Messenger service will notify customers running a vulnerable version of MSN Messenger that there is an upgrade available. Customers that have accepted this upgrade and have applied the update will be protected from this vulnerability. Customers that have not accepted this upgrade may not be allowed to connect to the MSN Messenger service with a vulnerable version of the client. Clients may be upgraded immediately by installing the update available at the download location provided in the 'Affected Software' section below.

Tested Software:
Affected Software:
------------------
* Microsoft Windows Media Player 9 Series (when running on Windows 2000, Windows XP Service Pack 1 and Windows Server 2003)
<http://tinyurl.com/43j3e>
* Microsoft Windows Messenger version 5.0 (standalone version that can be installed on all supported operating systems)
<http://tinyurl.com/6p3oh>
* Microsoft MSN Messenger 6.1
<http://tinyurl.com/3t9cm>
* Microsoft MSN Messenger 6.2 Microsoft Windows 98, Microsoft Windows 98 Second Edition (SE), and Microsoft Windows Millennium Edition (ME) - Review the FAQ section of this bulletin for details about these operating systems.
<http://tinyurl.com/3t9cm>

Affected Components:
--------------------
* Microsoft Windows Messenger version 4.7.0.2009 (when running on Windows XP Service Pack 1)
<http://tinyurl.com/4mq29>
* Microsoft Windows Messenger version 4.7.0.3000 (when running on Windows XP Service Pack 2)
<http://tinyurl.com/4pf8n>

Technical Description:
----------------------
* PNG Processing Vulnerability in Windows Media Player - CAN-2004-1244: A remote code execution vulnerability exists in Windows Media Player because it does not properly handle PNG files with excessive width or height values. An attacker could try to exploit the vulnerability by constructing a malicious PNG that could potentially allow remote code execution if a user visited a malicious Web site or clicked a link in a malicious e-mail message. An attacker who successfully exploited this vulnerability could take complete control of an affected system.

* PNG Processing Vulnerability in Windows Messenger - CAN-2004-0597: A remote code execution vulnerability exists in Windows Messenger because it does not properly handle corrupt or malformed PNG files. An attacker who successfully exploited this vulnerability could take complete control of an affected system.

* PNG Processing Vulnerability in MSN Messenger - CAN-2004-0597: A remote code execution vulnerability exists in MSN Messenger because it does not properly handle corrupt or malformed PNG image files. An attacker who successfully exploited this vulnerability could take complete control of an affected system.

Revision History:
-----------------
* v1.0 - 2/8/2005: Bulletin published
* v1.1 - 2/11/2005: Bulletin updated with information on the mandatory upgrade of vulnerable MSN Messenger clients in the caveat section, as well as changes to the Workarounds for PNG Processing Vulnerability in MSN Messenger - CAN-2004-0597
* v1.2 - 2/15/2005: Bulletin updated with correct file version information for Windows Messenger 5.0 update, as well as added Windows Messenger 5.1 to 'Non-Affected Software' list.
* v2.0 - 4/12/2005: Bulletin updated to announce the availability of an updated package for Microsoft Windows Messenger version 4.7.0.2009 (when running on Windows XP Service Pack 1)

This email is sent to NTBugtraq automagically as a service to my subscribers. (v4.01.1928.12470)

Cheers,
Russ Cooper - Senior Scientist - Cybertrust/NTBugtraq Editor

--
NTBugtraq Editor's Note:

Most viruses these days use spoofed email addresses. As such, using an Anti-Virus product which automatically notifies the perceived sender of a message it believes is infected may well cause more harm than good. Someone who did not actually send you a virus may receive the notification and scramble their support staff to find an infection which never existed in the first place. Suggest such notifications be disabled by whomever is responsible for your AV, or at least that the idea is considered.
--

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