Executive Summary

Informations
Name CVE-2020-16886 First vendor Publication 2020-10-16
Vendor Cve Last vendor Modification 2023-12-31

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Overall CVSS Score 5.3
Base Score 5.3 Environmental Score 5.3
impact SubScore 3.4 Temporal Score 5.3
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact Low
Integrity Impact Low Availability Impact Low
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 7.2 Attack Range Local
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

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.

The update addresses the vulnerability by changing how URLs are processed.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16886

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1

Sources (Detail)

Source Url
MISC https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1...

Alert History

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Date Informations
2024-01-01 00:27:39
  • Multiple Updates
2021-05-04 13:50:15
  • Multiple Updates
2021-04-22 03:01:53
  • Multiple Updates
2020-10-21 21:23:34
  • Multiple Updates
2020-10-17 09:22:54
  • Multiple Updates
2020-10-17 05:22:55
  • First insertion