CVE-2021-23886 Local Denial of Service in McAfee DLP Endpoint for Windows

Medium 5.5 Published 15 Apr 2021 Updated 3 Aug 2024

A local low-privileged attacker can cause a Blue Screen of Death in McAfee DLP Endpoint by manipulating process memory, requiring an upgrade to fix.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-23886?

CVE-2021-23886 is a medium-severity denial of service vulnerability in McAfee,LLC McAfee Data Loss Prevention (DLP) Endpoint for Windows, published on 15 Apr 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Denial of Service vulnerability in McAfee Data Loss Prevention (DLP) Endpoint for Windows prior to 11.6.100 allows a local, low privileged, attacker to cause a BSoD through suspending a process, modifying the processes memory and restarting it. This is triggered by the hdlphook driver reading invalid memory.

Weakness: CWE-755

Which versions are affected by CVE-2021-23886?

It affects 1 product.

Products include Mcafee Data Loss Prevention Endpoint.

How do I fix CVE-2021-23886?

No fix has been published for CVE-2021-23886 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2021-23886 being exploited?

There is no known exploitation of CVE-2021-23886 in the wild and no public exploit code.

Sources

Also known as GHSA-67hv-ghcg-2jfq.