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UNIRAS ALERT - 35/04 - MS04-028 Proof of Concept code released.


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      UNIRAS (UK Govt CERT) ALERT - 35/04 dated 17.09.04  Time: 15:00  
 UNIRAS is part of NISCC (National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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MS04-028 Buffer Overrun in JPEG Processing (GDI+) (Critical)
Proof of Concept exploit released.


Departmental and company security officers should be aware that a proof of concept 
exploit has been published for the heap overflow in the handling of JPEG files in 
Microsoft Windows XP (except Service Pack 2) and Microsoft Windows 2003 Server, as 
documented in Microsoft Security Bulletin MS04-028.

See http://www.microsoft.com/technet/security/bulletin/MS04-028.mspx. 

Although this exploit does not allow remote code execution but rather causes denial 
of service, an exploit which does allow remote code execution may become available 
in due course. 

Given that many applications (including Microsoft Office and Internet Explorer) 
render JPEG images and that malicious content could be sent in documents and HTML 
pages (including email),  it is strongly recommended that affected Windows components 
and applications are updated as soon as possible subject to testing that business 
function is not affected.

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For additional information or assistance, please contact the HELP Desk by 
telephone or Not Protectively Marked information may be sent via 
EMail to: uniras@xxxxxxxxxxxx

Office Hours:

Mon - Fri: 08:30 - 17:00 Hrs
Tel: +44 (0) 870 487 0748 Ext 4511
Fax: +44 (0) 870 487 0749

Outside of Office Hours:
On Call Duty Officer:
Tel: +44 (0) 870 487 0748 and follow the prompts

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UNIRAS wishes to acknowledge the contributions of Microsoft & CERT-FI for the information 
contained in this Briefing. 
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This Briefing contains the information released by the original author. Some 
of the information may have changed since it was released. If the vulnerability 
affects you, it may be prudent to retrieve the advisory from the canonical site 
to ensure that you receive the most current information concerning that problem.

Reference to any specific commercial product, process, or service by trade 
name, trademark manufacturer, or otherwise, does not constitute or imply 
its endorsement, recommendation, or favouring by UNIRAS or NISCC.  The views 
and opinions of authors expressed within this notice shall not be used for 
advertising or product endorsement purposes.

Neither UNIRAS or NISCC shall also accept responsibility for any errors 
or omissions contained within this briefing notice. In particular, they shall 
not be liable for any loss or damage whatsoever, arising from or in connection 
with the usage of information contained within this notice.

UNIRAS is a member of the Forum of Incident Response and Security Teams (FIRST) 
and has contacts with other international Incident Response Teams (IRTs) in 
order to foster cooperation and coordination in incident prevention, to prompt 
rapid reaction to incidents, and to promote information sharing amongst its 
members and the community at large. 
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<End of UNIRAS Briefing>

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