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Microsoft Windows Routing and Remote Access Vulnerabilities
Secunia Advisory: SA20630
Release Date: 2006-06-13
Last Update: 2006-06-28
Popularity: 16,736 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 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-2006-2370
CVE-2006-2371


Description:
Two vulnerabilities have been reported in Microsoft Windows, which can be exploited by malicious people or users to compromise a vulnerable system.

1) A boundary error exists within the Routing and Remote Access service (RRAS) service when handling certain RPC requests. This can be exploited to cause memory corruption and allows arbitrary code execution.

2) A boundary error exists within the Routing and Remote Access service (RRAS) service when handling certain RPC requests. This can be exploited to cause corruption of the RASMAN registry and allows arbitrary code execution.

Successful exploitation on Windows XP SP2 and Windows Server 2003 requires valid logon credentials. On Windows 2000 SP4 and Windows XP SP1, the vulnerabilities can be exploited by anonymous users.

Solution:
Apply patches.

Microsoft Windows 2000 SP4:
http://www.microsoft.com/downloads/de...=c1af96b2-2807-444b-82df-b6b61ec63715

Microsoft Windows XP SP1 or SP2:
http://www.microsoft.com/downloads/de...=74838e2b-bd5f-4584-81f1-3250e6b69728

Microsoft Windows XP Professional x64 Edition:
http://www.microsoft.com/downloads/de...=09d1a284-6a16-44a5-a95e-8eb566401ce9

Microsoft Windows Server 2003 (with or without SP1):
http://www.microsoft.com/downloads/de...=b4264cb9-8979-40e8-b903-bc8deda00fec

Microsoft Windows Server 2003 (Itanium) (with or without SP1):
http://www.microsoft.com/downloads/de...=890535c9-98cf-49a9-ae50-178e3c5fac6b

Microsoft Windows Server 2003 x64 Edition:
http://www.microsoft.com/downloads/de...=bf9cef95-89fd-4ec3-be0a-93902f2bb768

Provided and/or discovered by:
1) Reported by the vendor.
2) Peter Winter-Smith of NGSSoftware.

Changelog:
2006-06-15: Added links to US-CERT vulnerability notes. Added additional information from NGSSoftware.
2006-06-28: Microsoft issues updated patches to address various errors.

Original Advisory:
MS06-025 (KB911280):
http://www.microsoft.com/technet/security/Bulletin/MS06-025.mspx

NGSSoftware:
http://www.ngssoftware.com/advisories/rasman.txt

Other References:
Known issues with MS06-025 patches:
http://support.microsoft.com/kb/911280

US-CERT VU#631516:
http://www.kb.cert.org/vuls/id/631516

US-CERT VU#814644:
http://www.kb.cert.org/vuls/id/814644


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