CVE-2020-16886: Vulnerability Analysis & Exploit Details

Status: Modified - Last modified: 31-12-2023 Published: 16-10-2020

CVE-2020-16886
Vulnerability Scoring

5.3
/10

Attack Complexity Details

  • Attack Complexity: Low Impact
  • Attack Vector: LOCAL
  • Privileges Required: Low Impact
  • Scope: UNCHANGED
  • User Interaction: NONE

CIA Impact Definition

  • Confidentiality: Low Impact
  • Integrity: Low Impact
  • Availability: Low Impact

CVE-2020-16886 Vulnerability Summary

<p>A security feature bypass vulnerability exists in the PowerShellGet V2 module. An attacker who successfully exploited this vulnerability could bypass WDAC (Windows Defender Application Control) policy and execute arbitrary code on a policy locked-down machine.</p> <p>An attacker must have administrator privileges to create a configuration that includes installing PowerShellGet V2 module onto a machine from the PowerShell Gallery. The WDAC policy must be configured to allow the module to run. After this is done, PowerShell script can be injected and run fully trusted, allowing the attacker arbitrary code execution on the machine.</p> <p>The update addresses the vulnerability by changing how URLs are processed.</p>

Access Complexity Graph for CVE-2020-16886

Impact Analysis for CVE-2020-16886

CVE-2020-16886: Detailed Information and External References

EPSS

0.00047

EPSS %

0.19839

References

0.00047

CWE

NVD-CWE-noinfo

Vulnerable Configurations

  • cpe:2.3:a:microsoft:powershellget:2.2.5:*:*:*:*:*:*:*
    cpe:2.3:a:microsoft:powershellget:2.2.5:*:*:*:*:*:*:*

CVSS3 Source

secure@microsoft.com

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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