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CVE-2006-6696

6.9 · MEDIUM

Double free vulnerability in Microsoft Windows 2000, XP, 2003, and Vista allows local users to gain privileges by calling the MessageBox function with a MB_SERVICE_NOTIFICATION message with crafted…

Published Dec 22, 2006microsoftCWE-119EPSS 3.41%

Overview

CVE-2006-6696 is a medium-severity vulnerability affecting microsoft windows_2000. It was published on December 22, 2006 and has a CVSS 2.0 base score of 6.9 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 6.9, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Double free vulnerability in Microsoft Windows 2000, XP, 2003, and Vista allows local users to gain privileges by calling the MessageBox function with a MB_SERVICE_NOTIFICATION message with crafted data, which sends a HardError message to Client/Server Runtime Server Subsystem (CSRSS) process, which is not properly handled when invoking the UserHardError and GetHardErrorText functions in WINSRV.DLL.

Remediation

Check the references section for vendor advisories and patches from microsoft. Update windows_2000 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/2006/12/22/new-report-of-a-windows-vulnerability.aspxRefgroups.google.ca/group/microsoft.public.win32.programmer.kernel/browse_thread/thread/c5946bf40f227058/7bd7b5d66a4e5affRefisc.sans.org/diary.php?n&storyid=1965Reflists.grok.org.uk/pipermail/full-disclosure/2006-December/051394.htmlRefresearch.eeye.com/html/alerts/zeroday/20061215.htmlRefsecunia.com/advisories/23448Refsecuritytracker.com/id?1017433Refwww.determina.com/security.research/vulnerabilities/csrss-harderror.htmlRefwww.kuban.ru/forum_new/forum2/files/19124.htmlRefwww.security.nnov.ru/Gnews944.html

How CyberStrike helps

Frequently asked questions

What is CVE-2006-6696?

CVE-2006-6696 is a medium-severity vulnerability affecting microsoft windows_2000. It was published on December 22, 2006 and has a CVSS 2.0 base score of 6.9 (MEDIUM).

How severe is CVE-2006-6696?

This vulnerability has a CVSS 2.0 base score of 6.9, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2006-6696?

Check the references section for vendor advisories and patches from microsoft. Update windows_2000 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-2006-6696?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2006-6696 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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