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Move bypass execution policy check after AppLocker Deny check #15035

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Merged
rjmholt merged 3 commits into from
Mar 22, 2021
Merged

Move bypass execution policy check after AppLocker Deny check #15035

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1b7ccf2
move bypass after applocker deny
TravisEz13 Mar 15, 2021
1167f27
fix variable rename
TravisEz13 Mar 15, 2021
b95d5b9
Fix style issue
TravisEz13 Mar 15, 2021
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11 changes: 7 additions & 4 deletions src/System.Management.Automation/security/SecurityManager.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -140,10 +140,6 @@ private bool CheckPolicy(ExternalScriptInfo script, PSHost host, out Exception r
// Get the execution policy
_executionPolicy = SecuritySupport.GetExecutionPolicy(_shellId);

// See if they want to bypass the authorization manager
if (_executionPolicy == ExecutionPolicy.Bypass)
return true;

// Always check the SAFER APIs if code integrity isn't being handled system-wide through
// WLDP or AppLocker. In those cases, the scripts will be run in ConstrainedLanguage.
// Otherwise, block.
Expand Down Expand Up @@ -184,6 +180,13 @@ private bool CheckPolicy(ExternalScriptInfo script, PSHost host, out Exception r
}
}

// WLDP and Applocker takes priority over powershell exeuction policy.
// See if they want to bypass the authorization manager
if (_executionPolicy == ExecutionPolicy.Bypass)
{
return true;
}

if (_executionPolicy == ExecutionPolicy.Unrestricted)
{
// Product binaries are always trusted
Expand Down