CVE-2021-31847
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.40%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.40% probability · 33th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-269, CWE-347, CWE-427
- Affected
- mcafee/agent
- Source
- trellixpsirt@trellix.com
References
- https://kc.mcafee.com/corporate/index?page=content&id=SB10369Broken Link
- https://www.zerodayinitiative.com/advisories/ZDI-21-1104/Third Party Advisory, VDB Entry
- https://kc.mcafee.com/corporate/index?page=content&id=SB10369Broken Link
- https://www.zerodayinitiative.com/advisories/ZDI-21-1104/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.