Vulnerability · Published Sep 22, 2021 · Assigned by trellix

CVE-2021-31847Improper privilege management in repair process of MA for Windows

High 8.2

In plain English

A high-severity privilege mismanagement in McAfee Agent for Windows from McAfee,LLC. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).

Severity (CVSS 3.1)8.2High

Exploit odds (30 days)0.4%top 65.7% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
McAfee,LLC	McAfee Agent for Windows	unspecified – before 5.7.4

Weakness: CWE-269, CWE-347 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

References

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