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Microsoft Windows NNTP Response Handling Buffer Overflow Advisory Available in Danish  Advisory Available in German 

Secunia Advisory: SA27112  
Release Date: 2007-10-09

Critical:
Highly critical
Impact: System access
Where: From remote
Solution Status: Vendor Patch

OS:Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server
Microsoft Windows Server 2003 Datacenter Edition
Microsoft Windows Server 2003 Enterprise Edition
Microsoft Windows Server 2003 Standard Edition
Microsoft Windows Server 2003 Web Edition
Microsoft Windows Storage Server 2003
Microsoft Windows Vista
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional

Software:Microsoft Outlook Express 5.5
Microsoft Outlook Express 6

CVE reference:CVE-2007-3897 (Secunia mirror)

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Description:
VeriSign iDefense Labs has reported a vulnerability in Microsoft Windows, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error in inetcomm.dll when processing NNTP (Network News Transfer Protocol) responses. This can be exploited to cause a heap-based buffer overflow by returning more data than requested by the client.

Successful exploitation may allow execution of arbitrary code when a user e.g. visits a malicious website.

Do you have this product installed on your home computer? Scan using the free Personal Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, using the Network Software Inspector.

Solution:
Apply patches.

Windows 2000 SP4 and Outlook Express 5.5 SP2:
http://www.microsoft.com/downloads/de...=5AA009C9-4EDC-4F34-989B-0493549649E8

Windows 2000 SP4 and Outlook Express 6 SP1:
http://www.microsoft.com/downloads/de...=b537115d-611c-4486-960c-08d2df450579

Windows XP SP2 and Outlook Express 6:
http://www.microsoft.com/downloads/de...=3ed7f466-78c7-4251-ba24-8ae71ad54e18

Windows XP Professional x64 Edition SP2 and Outlook Express 6:
http://www.microsoft.com/downloads/de...=6468a552-2194-4866-97d5-ff77ae205eea

Windows Server 2003 SP1 and Outlook Express 6:
http://www.microsoft.com/downloads/de...=708926e4-f8af-4533-8747-22d6536ebd66

Windows Server 2003 SP2 and Outlook Express 6:
http://www.microsoft.com/downloads/de...=708926e4-f8af-4533-8747-22d6536ebd66

Windows Server 2003 x64 Edition and Outlook Express 6:
http://www.microsoft.com/downloads/de...=26720f5a-d7e9-44b9-9330-2e9faa4af0d9

Windows Server 2003 x64 Edition SP2 and Outlook Express 6:
http://www.microsoft.com/downloads/de...=26720f5a-d7e9-44b9-9330-2e9faa4af0d9

Windows Server 2003 with SP1 for Itanium-based systems and Outlook Express 6:
http://www.microsoft.com/downloads/de...=a8844fbb-5b2c-41f3-80f1-dce563aa7cb7

Windows Server 2003 with SP2 for Itanium-based systems and Outlook Express 6:
http://www.microsoft.com/downloads/de...=a8844fbb-5b2c-41f3-80f1-dce563aa7cb7

Windows Vista and Windows Mail:
http://www.microsoft.com/downloads/de...=b6ac8d93-adc3-4ec3-bad1-4990bd7d52b4

Windows Vista x64 Edition and Windows Mail:
http://www.microsoft.com/downloads/de...=34aaf9dd-4d63-43e2-b631-bbf492d56a26

Provided and/or discovered by:
Greg MacManus, VeriSign iDefense Labs.

Original Advisory:
MS07-056 (KB941202):
http://www.microsoft.com/technet/security/Bulletin/MS07-056.mspx

iDefense Labs:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=607

Extended Solution:
The "Extended Solution" section is available for Secunia customers only. Request a trial and get access to the Secunia Customer Area and Extended Secunia advisories.



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

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