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Microsoft Outlook Express Header Validation Denial of Service Weakness
Secunia Advisory: SA12038
Release Date: 2004-07-13
Last Update: 2004-07-15
Popularity: 11,177 views

Critical:
Not critical
Impact: DoS
Where: From remote
Solution Status: Vendor Patch

Software:Microsoft Outlook Express 6

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CVE reference:CVE-2004-0215


Description:
A weakness has been discovered in Microsoft Outlook Express 6, which can be exploited by malicious people to cause a DoS (Denial of Service).

The weakness is caused due to an error when validating email headers. This can be exploited to crash the application when a specially crafted email is viewed.

This will only pose a problem if the preview pane is enabled, since Outlook Express will crash each time it is started.

Solution:
Microsoft has issued cumulative patches. However, only Outlook Express 6 (without SP1) is affected by the weakness.

Microsoft Outlook Express 5.5 (requires SP2):
http://www.microsoft.com/downloads/de...-B79A-31D54743BA0E&displaylang=en

Microsoft Outlook Express 6:
http://www.microsoft.com/downloads/de...-9064-3070CE1F948A&displaylang=en

Microsoft Outlook Express 6 (requires SP1):
http://www.microsoft.com/downloads/de...-89B8-BD702B3E3E5D&displaylang=en

Microsoft Outlook Express 6 (64 bit Edition with SP1):
http://www.microsoft.com/downloads/de...-9A3F-2A601C3A04A5&displaylang=en

Microsoft Outlook Express 6 on Windows Server 2003:
http://www.microsoft.com/downloads/de...-A366-5F8EDC83633F&displaylang=en

Microsoft Outlook Express 6 on Windows Server 2003 (64 bit edition):
http://www.microsoft.com/downloads/de...-A174-84CF573F31FD&displaylang=en

Changelog:
2004-07-15: Added link to US-CERT vulnerability note.

Original Advisory:
MS04-018 (KB823353):
http://www.microsoft.com/technet/security/bulletin/MS04-018.mspx

Other References:
US-CERT VU#869640:
http://www.kb.cert.org/vuls/id/869640


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