CVE-2020-1002 Privilege escalation in Microsoft Forefront Endpoint Protection

High 7.1 Published Updated

An attacker with local access can exploit a flaw in MpSigStub.exe to delete arbitrary files, leading to privilege escalation.

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-2020-1002?

CVE-2020-1002 is a high-severity vulnerability in Microsoft Forefront Endpoint Protection, published on 15 Apr 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An elevation of privilege vulnerability exists when the MpSigStub.exe for Defender allows file deletion in arbitrary locations.To exploit the vulnerability, an attacker would first have to log on to the system, aka 'Microsoft Defender Elevation of Privilege Vulnerability'.

Which versions are affected by CVE-2020-1002?

It affects 4 products.

Products include Microsoft Forefront Endpoint Protection 2010, Microsoft Security Essentials, Microsoft System Center Endpoint Protection, Microsoft Windows Defender.

How do I fix CVE-2020-1002?

No fix has been published for CVE-2020-1002 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-1002 being exploited?

There is no known exploitation of CVE-2020-1002 in the wild and no public exploit code.

Sources

Also known as GHSA-xvh7-j354-hww5.

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