Security Advisory

This security advisory describes one low risk vulnerability.

1) Security Features

Risk: Low

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

CVE-ID:
CVE-2020-16886

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 a security feature bypass issue in the PowerShellGet V2 module. A local user can bypass WDAC (Windows Defender Application Control) policy and execute arbitrary code on a policy locked-down machine.

Mitigation

Install updates from vendor’s website.

Vulnerable software versions

PowerShellGet:
2.2.5

CPE

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16886

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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