Advisory Details

September 22nd, 2021

McAfee Endpoint Security Incorrect Permission Assignment Privilege Escalation Vulnerability

ZDI-21-1104
ZDI-CAN-13800

CVE ID CVE-2021-31847
CVSS SCORE 7.8, AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS McAfee
AFFECTED PRODUCTS Endpoint Security
VULNERABILITY DETAILS

This vulnerability allows local attackers to escalate privileges on affected installations of McAfee Endpoint Security. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the installer. The issue results from incorrect permissions set on a resource used by the installer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

ADDITIONAL DETAILS McAfee has issued an update to correct this vulnerability. More details can be found at:
https://kc.mcafee.com/corporate/index?page=content&id=SB10369
DISCLOSURE TIMELINE
  • 2021-06-16 - Vulnerability reported to vendor
  • 2021-09-22 - Coordinated public release of advisory
CREDIT @Kharosx0
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