Microsoft Windows Authenticode Signature Verification Remote Code Execution Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-06-08
• EPSS: 88% chance of exploitation in the next 30 days (higher than 100% of CVEs)

[ Description ]Official description

The Authenticode Signature Verification function in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, Windows 7 Gold and SP1, and Windows 8 Consumer Preview does not properly validate the digest of a signed portable executable (PE) file, which allows user-assisted remote attackers to execute arbitrary code via a modified file with additional content, aka "WinVerifyTrust Signature Validation Vulnerability."

CISA: The Authenticode Signature Verification function in Microsoft Windows (WinVerifyTrust) does not properly validate the digest of a signed portable executable (PE) file, which allows user-assisted remote attackers to execute code.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 22 Jun 2022): Apply updates per vendor instructions.

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

[ References ]References

• osvdb.org/81135Broken Link
• secunia.com/advisories/48581Broken Link
• www.securitytracker.com/idBroken LinkThird Party AdvisoryVDB Entry
• www.us-cert.gov/cas/techalerts/TA12-101A.htmlThird Party AdvisoryUS Government Resource
• docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-024PatchVendor Advisory
• oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15594Broken Link
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource