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Microsoft Frontpage Server Extensions Remotely Exploitable Buffer Overflow
Secunia Advisory: SA10195
Release Date: 2003-11-11
Last Update: 2003-11-17
Popularity: 14,000 views

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

Software:Microsoft Internet Information Services (IIS) 5.x

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CVE reference:CVE-2003-0822
CVE-2003-0824


Description:
Microsoft has issued patches for Frontpage Server Extensions. These fix two vulnerabilities, which can allow malicious people to execute arbitrary code or cause a Denial of Service.

A boundary error in "fp30reg.dll" when handling chunked encoded posts can be exploited to cause a buffer overflow, which may allow execution of arbitrary code with SYSTEM privileges.

It is possible to cause certain SmartHTML (WebBots) to consume all available CPU resources for a short period of time through malicious HTTP requests.

The vulnerabilities affect Microsoft FrontPage Server Extensions 2000 and 2002 (except Windows 2000 systems with Service Pack 4 installed).

Solution:
Patches are available:

Microsoft FrontPage Server Extensions 2000:
http://www.microsoft.com/downloads/de...-BF58-D3BC70A77BFA&displaylang=en

Microsoft FrontPage Server Extensions 2000 (Shipped with Windows 2000):
http://www.microsoft.com/downloads/de...-9F0F-3B15DD8622A2&displaylang=en

Microsoft FrontPage Server Extensions 2000 (Shipped with Windows XP):
http://www.microsoft.com/downloads/de...-82DC-ED1E49A16E1C&displaylang=en

Microsoft FrontPage Server Extensions 2002:
http://www.microsoft.com/downloads/de...-8299-86C49321EE25&displaylang=en

Microsoft SharePoint Team Services 2002 (shipped with Office XP):
http://www.microsoft.com/downloads/de...-8F15-36A1C9E0A340&displaylang=en

Provided and/or discovered by:
Brett Moore of Security-Assessment.com

Changelog:
2003-11-12: Updated information released.
2003-11-13: Added link to CERT.
2003-11-14: Updated credits section.
2003-11-17: Added another link to CERT.

Original Advisory:
Buffer Overrun in Microsoft FrontPage Server Extensions Could Allow Code Execution (813360)
http://www.microsoft.com/technet/security/bulletin/MS03-051.asp

Other References:
CERT VU#279156:
http://www.kb.cert.org/vuls/id/279156

CERT VU#179012:
http://www.kb.cert.org/vuls/id/179012


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