Windows Server Service Buffer Overflow Vulnerability - Secunia Advisories - Vulnerability Intelligence

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Windows Server Service Buffer Overflow Vulnerability
Secunia Advisory:	SA21388	Advisory Toolbox: Issue ticket Save in to-do list Mark as handled Exploit information Download as PDF Review actions Add comment
Release Date:	2006-08-08
Last Update:	2006-09-01
Popularity:	16,073 views

Critical:	Moderately critical
Impact:	System access
Where:	From local network
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 NT 4.0 Server Microsoft Windows NT 4.0 Server, Terminal Server Edition Microsoft Windows NT 4.0 Workstation 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 XP Home Edition Microsoft Windows XP Professional

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CVE reference:	CVE-2006-3439

Description: A vulnerability has been reported in Microsoft Windows, which can be exploited by malicious people to compromise a vulnerable system. The vulnerability is caused due to a boundary error in the "CanonicalizePathName()" function in netapi32.dll and can be exploited to cause a stack-based buffer overflow via e.g. a malicious NetrpPathCanonicalize RPC request with an overly long path name to the Server Service (port 139/TCP or 445/TCP). Successful exploitation allows execution of arbitrary code. NOTE: According to Microsoft, the vulnerability is already being actively exploited. Another unspecified issue discovered by Microsoft has also been reported. Solution: Apply patches. Windows NT 4.0: This version of Windows is no longer supported by Microsoft. Customers are encouraged to upgrade to a supported version. Windows 2000 (requires SP4): http://www.microsoft.com/downloads/de...=3b61153d-359f-4441-a448-24062cb2387c Windows XP (requires SP1 or SP2): http://www.microsoft.com/downloads/de...=2996b9b6-03ff-4636-861a-46b3eac7a305 Windows XP Professional x64 Edition: http://www.microsoft.com/downloads/de...=314c7c2c-9a02-4e56-98cf-97703fecf0be Windows Server 2003 (optionally with SP1): http://www.microsoft.com/downloads/de...=a0058f39-6dea-4dfc-9dd6-4cb45b305dec Windows Server 2003 for Itanium-based systems (optionally with SP1): http://www.microsoft.com/downloads/de...=af970833-2044-4284-937d-3beb2e2f286d Windows Server 2003 x64 Edition: http://www.microsoft.com/downloads/de...=3b0c1954-fca5-4e95-abb2-6066a9d6bc76 Provided and/or discovered by: The vendor credits US-CERT and SANS. Changelog: 2006-08-09: Added link to US-CERT. 2006-08-14: Added details and link to Microsoft Security Advisory. 2006-09-01: Added Windows NT4.0 as vulnerable. Original Advisory: MS06-040 (KB921883): http://www.microsoft.com/technet/security/Bulletin/MS06-040.mspx Microsoft: http://www.microsoft.com/technet/security/advisory/922437.mspx Other References: US-CERT VU#650769: http://www.kb.cert.org/vuls/id/650769

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