The Server Message Block (SMB) driver (MRXSMB.SYS) in Microsoft Windows 2000 SP4, XP SP1 and SP2, and Server 2003 SP1 and earlier allows local users to cause a denial of service (hang) by calling the MrxSmbCscIoctlCloseForCopyChunk with the file handle of the shadow device, which results in a deadlock, aka the "SMB Invalid Handle Vulnerability."

References

• https://nvd.nist.gov/vuln/detail/CVE-2006-2374
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2006/ms06-030
• https://exchange.xforce.ibmcloud.com/vulnerabilities/26830
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1827
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1841
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1850
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1979
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2030
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2060
• http://secunia.com/advisories/20635
• http://securitytracker.com/id?1016288
• http://www.idefense.com/intelligence/vulnerabilities/display.php?id=409
• http://www.osvdb.org/26439
• http://www.securityfocus.com/bid/18357
• http://www.vupen.com/english/advisories/2006/2327