Improper privilege management in repair process of MA for Windows

Vulnerability Description

Improper access control vulnerability in the repair process for McAfee Agent for Windows prior to 5.7.4 could allow a local attacker to perform a DLL preloading attack using unsigned DLLs. This would result in elevation of privileges and the ability to execute arbitrary code as the system user, through not correctly protecting a temporary directory used in the repair process and not checking the DLL signature.

References

• https://kc.mcafee.com/corporate/index?page=content&id=SB10369
• https://www.zerodayinitiative.com/advisories/ZDI-21-1104/