Microsoft Windows kernel privilege escalation

ms-win-kernel-privilege-escalation (64926) The risk level is classified as HighHigh Risk

Description:

Microsoft Windows could allow a local attacker to gain elevated privileges on the system, caused by an integer truncation error when memory is allocated by the kernel. By persuading a victim to browse a directory containing a specially-crafted application, a local attacker with valid login credentials could exploit this vulnerability to execute arbitrary code on the system with elevated privileges.

*CVSS:

Base Score: 6.9
  Access Vector: Local
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: Complete
  Integrity Impact: Complete
  Availability Impact: Complete
 
Temporal Score: 5.4
  Exploitability: Proof-of-Concept
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Privileges

Remedy:

Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS11-011. See References.

References:

  • Microsoft Security Bulletin MS11-011: Vulnerabilities in Windows Kernel Could Allow Elevation of Privilege (2393802).
  • Offensive Security Exploit Database [03-01-2011]: MS11-011(CVE-2011-0045): MS Windows XP WmiTraceMessageVa Integer Truncation Vulnerability PoC.
  • ZDI-11-064: Microsoft Windows WmiTraceMessageVa Local Kernel Vulnerability.
  • ZDI-11-064: Microsoft Windows WmiTraceMessageVa Local Kernel Vulnerability.
  • ZDI-11-064: Microsoft Windows WmiTraceMessageVa Local Kernel Vulnerability.
  • ZDI-11-064: Microsoft Windows WmiTraceMessageVa Local Kernel Vulnerability.
  • BID-46136: Microsoft Windows Kernel Integer Truncation Local Privilege Escalation Vulnerability
  • CVE-2011-0045: The Trace Events functionality in the kernel in Microsoft Windows XP SP3 does not properly perform type conversion, which causes integer truncation and insufficient memory allocation and triggers a buffer overflow, which allows local users to gain privileges via a crafted application, related to WmiTraceMessageVa, aka Windows Kernel Integer Truncation Vulnerability.
  • OSVDB ID: 70823: Microsoft Windows Kernel Trace Event (WmiTraceMessageVa) Handling Integer Truncation Local Privilege Escalation

Platforms Affected:

  • Microsoft Windows XP SP3

Reported:

Feb 08, 2011

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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