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Home >> Browse Vulnerability Assessment Database >> Windows : Microsoft Bulletins >> Flaw in SMB Signing Could Enable Group Policy to be Modified (329170)

Vulnerability Assessment Details

Flaw in SMB Signing Could Enable Group Policy to be Modified (329170)

Vulnerability Assessment Summary
Checks for MS Hotfix 329170

Detailed Explanation for this Vulnerability Assessment

Summary :

It is possible to send unsigned SMB packets.

Description :

The remote version of Windows contains a flaw in the SMB signing
implementation. SMB signing is used to sign each packets sent
between a client and a server to protect them against man in the
middle attacks.
If the Domain policy is configured to force usage of SMB signing
it is possible for a possible hacker to downgrade the communication to
disable SMB signing and try to launch man in the middle attacks.

Solution :

Microsoft has released a set of patches for Windows XP and 2000 :

http://www.microsoft.com/technet/security/bulletin/ms02-070.mspx

Network Security Threat Level:

Medium / CVSS Base Score : 6
(AV:R/AC:H/Au:NR/C:P/A:P/I:P/B:N)

Networks Security ID: 6367

Vulnerability Assessment Copyright: This script is Copyright (C) 2005 Tenable Network Security

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