PT-2008-05: VMware Multiple Products vmci.sys Privilege Escalation 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 RatingSeverity: Medium Impact: Priviliege Escalation Attack Vector: Local CVSS v2 Base Score: 6.6 Temporal Score: 5.2 Vector: (AV:L/AC:M/Au:S/C:C/I:C/A:C/E:P/RL:O/RC:C) CVE: CVE-2009-1147Vulnerability DescriptionPositive Technologies Research Team has discovered priviliege escalation vulnerabilities in VMware products.The IOCTL handler in vmci.sys does not properly validate buffer data associated with the Irp object, which allows local users with administrative priviligies to gain SYSTEM privilieges..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 later Refer to VMware KB article 1009826 on the steps that are needed to remediate this vulnerability on Windows-based hosts. This KB article is found at http://kb.vmware.com/kb/1009826.Disclosure Timeline 10.14.2008 - Vendor notified 10.16.2008 - Vendor replied 10.16.2008 - Sent detailed information 04.03.2009 - 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-2008-05 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