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Microsoft Windows SMB2 '_Smb2ValidateProviderCallback()' Remote Code Execution Vulnerability
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Microsoft Windows is prone to a remote code-execution vulnerability when processing the protocol headers for the Server Message Block (SMB) Negotiate Protocol Request. NOTE: Reportedly, for this issue to be exploitable, file sharing must be enabled.
Affected Software
Affected Software
Windows 7 RC, Vista and 2008 Server are vulnerable, other versions may also be affected. NOTE: Reportedly, Windows XP and 2000 are not affected. UPDATE (September 9, 2009): Symantec has confirmed the issue on Windows Vista SP1 and Windows Server 2008.
Detection Method
Detection Method
Opens a TCP socket to send a crafted request and checks if the host responds to a second request after a few seconds.
Solution
Solution
Microsoft has released updates to fix the issue. Please see the references for more information.
Common Vulnerabilities and Exposures (CVE)
References
- http://blog.48bits.com/?p=510#more-510
- https://docs.microsoft.com/de-de/security-updates/securitybulletins/20
- http://blogs.technet.com/msrc/archive/2009/09/08/microsoft-security-ad
- http://www.microsoft.com/windows/windows-7/
- http://blogs.technet.com/srd/archive/2009/09/18/update-on-the-smb-vuln
- http://www.microsoft.com/windows/products/windowsvista/default.mspx
- http://g-laurent.blogspot.com/2009/09/windows-vista7-smb20-negotiate-p
- http://www.kb.cert.org/vuls/id/135940