PT-2008-07: VMware Multiple Products hcmon.sys Denial of Service Vulnerability Affected Software VMware Workstation 6.0.x, 6.5.x VMware Player 2.0.x, 2.5.x VMware ACE 2.0.x VMware Server 2.x Product Link: http://www.vmware.comSeverity Rating Severity: Medium Impact: Denial of Service Attack Vector: Local CVSS v2 Base Score: 4.4 Temporal Score: 3.4 Vector: (AV:L/AC:M/Au:S/C:N/I:N/A:C/E:P/RL:O/RC:C) CVE: CVE-2009-1146Vulnerability DescriptionPositive Technologies Research Team has discovered denial of service vulnerabilities in VMware products.The IOCTL handler in hcmon.sys does not properly validate buffer data associated with the Irp object, which allows local users with administrative priviligies to crash the system. SolutionUpdate to the latest product version: vmware.com. Workstation 6.5.x Windows 6.5.2 build 156735 or later Workstation 6.0.x Windows upgrade to at least 6.5.2 Player 2.5.x Windows 2.5.2 build 156735 or later Player 2.0.x Windows upgrade to at least 2.5.2 ACE 2.5.x Windows 2.5.2 build 156735 or later ACE 2.0.x Windows upgrade to at least 2.5.2 Server 2.x Windows 2.0.1 build 156745 or laterDisclosure Timeline 10.14.2008 - Vendor notified 10.16.2008 - Vendor replied 10.16.2008 - Sent detailed information 03.31.2009 - Vendor released fixed versions 04.06.2009 - Public disclosureCreditsThis vulnerability was discovered by Nikita Tarakanov, Positive Technologies Research Team.Referenceshttp://en.securitylab.ru/lab/PT-2008-07 http://www.ptsecurity.ru/advisory.aspComplete list of vulnerability reports published by Positive Technologies Research Team: http://en.securitylab.ru/lab/ http://www.ptsecurity.ru/advisory.asp