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Vulnerability:Win/SMB2.SRV2.RCE!CVE-2009-3103

Severity rating
Critical

Class/Type
Vulnerability

Discovered date
2009-09-08T00:00:00

Attack vector
Remote

Authentication required
No

Public exploits available
Yes

Signature detection
Low



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Description

A remote code execution vulnerability exists in the way that Microsoft Server Message Block (SMB) Protocol parses SMB negotiation requests.



Impact

An attacker who successfully exploited this vulnerability could take complete control of an affected system. Most attempts to exploit this vulnerability will cause an affected system to stop responding and restart.



Technical details (analysis)

Microsoft Server Message Block (SMB) is a Microsoft network file sharing protocol used in Microsoft Windows.The vulnerability is caused by the Microsoft Server Message Block (SMB) implementation not appropriately parsing SMB negotiation requests.



Affected software

Windows Vista, Windows Vista Service Pack 1, and Windows Vista Service Pack 2
Windows Vista x64 Edition, Windows Vista x64 Edition Service Pack 1, and Windows Vista x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2



Non-affected software

Microsoft Windows 2000 Service Pack 4
Windows XP Service Pack 2 and Windows XP Service Pack 3
Windows XP Professional x64 Edition Service Pack 2
Windows Server 2003 Service Pack 2
Windows Server 2003 x64 Edition Service Pack 2
Windows Server 2003 with SP2 for Itanium-based Systems
Windows 7 for 32-bit Systems
Windows 7 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems
Windows Server 2008 R2 for Itanium-based Systems



References




Solutions




NIS signature

Name: Vulnerability:Win/SMB2.SRV2.RCE!CVE-2009-3103
Release Date: 2009-09-08T00:00:00



Known false positives

No known false positives at this time.



Work-arounds

Disable SMB v2
Block TCP ports 139 and 445 at the firewall