This security advisory describes one low risk vulnerability.

1) Buffer overflow

Risk: Low

CVSSv3:
6.8 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID:
CVE-2020-16939

CWE-ID:
CWE-119 – Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability:
No

Description


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


The vulnerability exists due to a boundary error when Group Policy improperly checks access. 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

Windows:
7, 8.1, 10, 10 1607, 10 1709, 10 1803, 10 1809, 10 1903, 10 1909, 10 2004, RT 8.1

Windows Server:
2008, 2008 R2, 2012, 2012 R2, 2016, 2019, 2019 1903, 2019 1909, 2019 2004

CPE

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16939

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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