Microsoft Forefront TMG Remote Code Execution Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-03-03
• EPSS: 49% chance of exploitation in the next 30 days (higher than 99% of CVEs)
• Critical severity: CVSS 9.8

[ Description ]Official description

The NSPLookupServiceNext function in the client in Microsoft Forefront Threat Management Gateway (TMG) 2010 allows remote attackers to execute arbitrary code via vectors involving unspecified requests, aka "TMG Firewall Client Memory Corruption Vulnerability."

CISA: A remote code execution vulnerability exists in the Forefront Threat Management Gateway (TMG) Firewall Client Winsock provider that could allow code execution in the security context of the client application.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 24 Mar 2022): Apply updates per vendor instructions.

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

[ References ]References

• secunia.com/advisories/44857Broken Link
• www.securityfocus.com/bid/48181Broken LinkThird Party AdvisoryVDB Entry
• www.securitytracker.com/idBroken LinkThird Party AdvisoryVDB Entry
• docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-040PatchVendor Advisory
• exchange.xforce.ibmcloud.com/vulnerabilities/67736Third Party AdvisoryVDB Entry
• oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12642Broken Link
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource