Vulnerability CVE-2021-31847


Published: 2021-09-22

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.

Type:

CWE-347

(Improper Verification of Cryptographic Signature)

CVSS2 => (AV:L/AC:M/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.9/10
10/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Mcafee -> Mcafee agent 

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

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