Misconfigured PowerShell Script Permissions
TLDR: Misconfigured PowerShell script permissions occur when access controls or execution rights for scripts are improperly implemented, leading to risks such as unauthorized access, privilege escalation, or malicious script execution. Common issues include granting excessive permissions, failing to restrict sensitive script locations, and neglecting to validate script sources. Proper configuration ensures secure and controlled script execution in PowerShell environments.
https://en.wikipedia.org/wiki/PowerShell
A typical example of misconfigured PowerShell script permissions is assigning `Full Control` or overly permissive rights to all users, allowing unauthorized modifications or execution of sensitive scripts. Failing to restrict access to critical directories, such as those containing deployment or administrative scripts, increases the risk of tampering or unauthorized use. Additionally, neglecting to validate script authenticity leaves systems vulnerable to the execution of malicious or compromised code. Tools like Windows File Explorer ACL management and `icacls` commands can help audit and manage these permissions.
https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/icacls
To secure PowerShell script permissions, administrators should enforce least-privilege principles, granting execution rights only to authorized users or roles. Using PowerShell Script Block Logging enables detailed monitoring of script activity, helping to detect unauthorized or anomalous behavior. Regular audits of file and directory permissions, combined with compliance frameworks like CIS Benchmarks, ensure that scripts remain secure and aligned with organizational policies.