1) Permissions, Privileges, and Access Controls

Risk: Low

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

CVE-ID:
CVE-2020-16876

CWE-ID:
CWE-264 – Permissions, Privileges, and Access Controls

Exploit availability:
No

Description

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

The vulnerability exists due to the way Windows Application Compatibility Client Library handles registry operations. A local user can create a malicious application, launch it on the system and gain elevated privileges.

To exploit the vulnerability, an attacker would first need code execution on a victim system.

Mitigation

Install update from vendor’s website.

Vulnerable software versions

Windows:
10, 10 1607, 10 1709, 10 1803, 10 1809, 10 1903, 10 1909, 10 2004

Windows Server:
2016, 2019, 2019 1903, 2019 1909, 2019 2004

CPE

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16876

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.

2) Permissions, Privileges, and Access Controls

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-2020-16920

CWE-ID:
CWE-264 – Permissions, Privileges, and Access Controls

Exploit availability:
No

Description

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


The vulnerability exists due to the way Windows Application Compatibility Client Library handles registry operations. A local user can create a malicious application, launch it on the system and gain elevated privileges.


To exploit the vulnerability, an attacker would first need code execution on a victim 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 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-2020-16920

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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