Executive Risk Summary
"A use-after-free vulnerability in the win32k.sys kernel-mode driver allows local users to gain privileges via a crafted application. This vulnerability affects various Windows operating systems, including Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, and Windows 7."
Anticipated Attack Path
- 1. Exploitation of the use-after-free vulnerability in win32k.sys
- 2. Elevation of privileges to gain access to sensitive system resources
- 3. Potential execution of malicious code with elevated privileges
Am I Vulnerable?
- Verify the presence of the win32k.sys driver on the system
- Check for any suspicious or unauthorized applications leveraging the win32k.sys driver
- Apply the MS11-034 security update to patch the vulnerability
Operational Audit Arsenal
Target Type Kernel-mode driver
Target Asset win32k.sys
Standard Path C:\Windows\System32\drivers\win32k.sys
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: win32k.sys (Kernel-mode driver)
$Targets = 'win32k.sys'
$SearchPaths = @("$env:windir\System32", "$env:ProgramFiles", "${env:ProgramFiles(x86)}")
Get-ChildItem -Path $SearchPaths -Include $Targets -Recurse -ErrorAction SilentlyContinue |
Select-Object FullName, @{Name="Version";Expression={$_.VersionInfo.ProductVersion}}Patch Impact Forecast
Reboot Required Likely
System restart required to apply the patch
Internal Work Notes
Apply MS11-034 security update to patch use-after-free vulnerability in win32k.sys kernel-mode driver to prevent local privilege escalation attacks.
Technical Intelligence & Operational Utilities • Delivered Weekly
Intelligence Sources
Official Advisoryhttp://blogs.technet.com/b/srd/archive/2011/04/12/ms11-034-addressing-vulnerabilities-in-the-win32k-subsystem.aspx
Official Advisoryhttp://osvdb.org/71745
Official Advisoryhttp://secunia.com/advisories/44156
Official Advisoryhttp://support.avaya.com/css/P8/documents/100133352
Official Advisoryhttp://www.securityfocus.com/bid/47206
Official Advisoryhttp://www.securitytracker.com/id?1025345
Official Advisoryhttp://www.us-cert.gov/cas/techalerts/TA11-102A.html
Official Advisoryhttp://www.vupen.com/english/advisories/2011/0952
MSRC Advisoryhttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-034
Official Advisoryhttps://exchange.xforce.ibmcloud.com/vulnerabilities/66400
Official Advisoryhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11942
Official Advisoryhttp://blogs.technet.com/b/srd/archive/2011/04/12/ms11-034-addressing-vulnerabilities-in-the-win32k-subsystem.aspx
Official Advisoryhttp://osvdb.org/71745
Official Advisoryhttp://secunia.com/advisories/44156
Official Advisoryhttp://support.avaya.com/css/P8/documents/100133352
Official Advisoryhttp://www.securityfocus.com/bid/47206
Official Advisoryhttp://www.securitytracker.com/id?1025345
Official Advisoryhttp://www.us-cert.gov/cas/techalerts/TA11-102A.html
Official Advisoryhttp://www.vupen.com/english/advisories/2011/0952
MSRC Advisoryhttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-034
Official Advisoryhttps://exchange.xforce.ibmcloud.com/vulnerabilities/66400
Official Advisoryhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11942
Related Microsoft Threats
Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.