Microsoft Win32k Privilege Escalation Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-05-04
• EPSS: 87% chance of exploitation in the next 30 days (higher than 100% of CVEs)

[ Description ]Official description

win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows local users to gain privileges via a crafted application, as exploited in the wild in October 2014, aka "Win32k.sys Elevation of Privilege Vulnerability."

CISA: Microsoft Win32k contains an unspecified vulnerability that allows for privilege escalation.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 25 May 2022): Apply updates per vendor instructions.

• Patch on docs.microsoft.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ References ]References

• blog.trendmicro.com/trendlabs-security-intelligence/an-analysis-of-a-windows-kernel-mod…ExploitNot Applicable
• blogs.technet.com/b/srd/archive/2014/10/14/accessing-risk-for-the-october-2014-security…Not ApplicableVendor Advisory
• osvdb.org/show/osvdb/113167Broken Link
• packetstormsecurity.com/files/131964/Windows-8.0-8.1-x64-TrackPopupMenu-Privilege-Escal…ExploitThird Party AdvisoryVDB Entry
• secunia.com/advisories/60970Broken Link
• www.exploit-db.com/exploits/35101ExploitThird Party AdvisoryVDB Entry
• www.securityfocus.com/bid/70364Broken LinkThird Party AdvisoryVDB Entry
• docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-058PatchVendor Advisory
• github.com/sam-b/CVE-2014-4113Third Party Advisory
• www.exploit-db.com/exploits/37064ExploitThird Party AdvisoryVDB Entry
• www.exploit-db.com/exploits/39666Third Party AdvisoryVDB Entry
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource