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CVE-2009-3676

7.1 · HIGH

The SMB client in the kernel in Microsoft Windows Server 2008 R2 and Windows 7 allows remote SMB servers and man-in-the-middle attackers to cause a denial of service (infinite loop and system hang)…

Published Nov 13, 2009microsoftCWE-399EPSS 34.58%

Overview

CVE-2009-3676 is a high-severity vulnerability affecting microsoft windows_7. It was published on November 13, 2009 and has a CVSS 2.0 base score of 7.1 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The SMB client in the kernel in Microsoft Windows Server 2008 R2 and Windows 7 allows remote SMB servers and man-in-the-middle attackers to cause a denial of service (infinite loop and system hang) via a (1) SMBv1 or (2) SMBv2 response packet that contains (a) an incorrect length value in a NetBIOS header or (b) an additional length field at the end of this response packet, aka "SMB Client Incomplete Response Vulnerability."

Remediation

Check the references section for vendor advisories and patches from microsoft. Update windows_7 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refblogs.technet.com/msrc/archive/2009/11/13/microsoft-security-advisory-977544-released.aspxRefg-laurent.blogspot.com/2009/11/windows-7-server-2008r2-remote-kernel.htmlRefnews.cnet.com/8301-27080_3-10395891-245.htmlRefpraetorianprefect.com/archives/2009/11/how-to-crash-windows-7-and-server-2008/Refseclists.org/fulldisclosure/2009/Nov/134Refsecunia.com/advisories/37347Refsecunia.com/blog/66/Refwww.microsoft.com/technet/security/advisory/977544.mspxRefwww.securitytracker.com/id?1023179Refwww.us-cert.gov/cas/techalerts/TA10-103A.html

How CyberStrike helps

Frequently asked questions

What is CVE-2009-3676?

CVE-2009-3676 is a high-severity vulnerability affecting microsoft windows_7. It was published on November 13, 2009 and has a CVSS 2.0 base score of 7.1 (HIGH).

How severe is CVE-2009-3676?

This vulnerability has a CVSS 2.0 base score of 7.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-3676?

Check the references section for vendor advisories and patches from microsoft. Update windows_7 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2009-3676?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-3676 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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