Security Feature Bypass in Microsoft Windows Token Security



Published: 2020-04-14
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-0981
CWE-ID CWE-254
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Security Features

EUVDB-ID: #VU26871

Risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-0981

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

This vulnerability allows a local user to bypass security rescritions feature.

The vulnerability exists due to Windows fails to properly handle token relationships. A local user can allow an application with a certain integrity level to execute code at a different integrity level, leading to a sandbox escape.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 10 1903, 10 1909

Windows Server: 2019 1903, 2019 1909

CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0981

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.



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