Vulnerability identifier: #VU29792

Vulnerability risk: Low

CVSSv3.1: 7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-1461

CWE-ID: CWE-119

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Microsoft Forefront Endpoint Protection
Server applications / DLP, anti-spam, sniffers
Microsoft Security Essentials
Client/Desktop applications / Antivirus software/Personal firewalls
Windows Defender
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: Microsoft

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error when the MpSigStub. A local user can use a specially crafted application to trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Microsoft Forefront Endpoint Protection: 2010

Microsoft Security Essentials: All versions

Windows Defender: for Windows 8.1 - on Windows Server 2012

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1461

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.