PT-2011-2077 · Microsoft · Windows Vista+5

Published 2011-02-08 · Updated 2023-12-07 · CVE-2011-0087

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Windows XP versions SP2 and SP3 Windows Server 2003 version SP2 Windows Vista versions SP1 and SP2 Windows Server 2008 versions Gold and SP2

Description The issue arises from insufficient validation of user-mode input by the win32k.sys driver in the Windows kernel-mode drivers. This allows local users to gain privileges via a crafted application. An elevation of privilege vulnerability exists in the way that Windows kernel-mode drivers validate data supplied from user mode to kernel mode. An attacker who successfully exploits this could run arbitrary code in kernel mode and take complete control of an affected system, enabling them to install programs, view, change, or delete data, or create new accounts with full administrative rights.

Recommendations For Windows XP SP2 and SP3, update to a version that includes the fix for this issue. For Windows Server 2003 SP2, apply the necessary patch to resolve the vulnerability. For Windows Vista SP1 and SP2, install an update that addresses the insufficient user input validation. For Windows Server 2008 Gold and SP2, apply a patch that fixes the elevation of privilege vulnerability in kernel-mode drivers.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2011-0087

Affected Products

Windows

Windows Server 2003

Windows Server 2008

Windows Vista

Windows Xp

Win32K.Sys

References · 9

• http://secunia.com/advisories/43255 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2011-0087 · Security Note
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-012 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0087 · Security Note
• http://vupen.com/english/advisories/2011/0325 · Vendor Advisory
• http://osvdb.org/70819 · Note
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12312 · Note
• http://securityfocus.com/bid/46148 · Note
• https://docs.microsoft.com/security-updates/securitybulletins/2011/MS11-012 · Note