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Prevent launch on installer finish when run as SYSTEM

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* This condition will only happen when KeePassXC is installed by MECM or similar deployment tool. This prevents accidental launch on exit if the packager forgot to set LAUNCHAPPONEXIT=0 in the msiexec call. Allowing launch on exit in these conditions would potentially allow a non-privileged user to assume the role of SYSTEM through the KeePassXC application.

* Fixes weakness reported by HackAndPwn, thank you!
This commit is contained in:
Jonathan White
2025-11-22 13:03:56 -05:00
committed by Janek Bevendorff
parent 5211852d7e
commit 9526f42536
1 changed files with 2 additions and 0 deletions
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share/windows/wix-template.xml
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@@ -121,6 +121,8 @@
<SetProperty Id="AUTOSTARTPROGRAM" After="AppSearch" Value="" Sequence="first">AUTOSTARTPROGRAM="0" OR (WIX_UPGRADE_DETECTED AND NOT AUTOSTARTPROGRAM_REGISTRY)</SetProperty> <SetProperty Id="AUTOSTARTPROGRAM" After="AppSearch" Value="" Sequence="first">AUTOSTARTPROGRAM="0" OR (WIX_UPGRADE_DETECTED AND NOT AUTOSTARTPROGRAM_REGISTRY)</SetProperty>
<SetProperty Id="ADDTOPATH" After="AppSearch" Value="" Sequence="first">ADDTOPATH="0" OR (WIX_UPGRADE_DETECTED AND NOT ADDTOPATH_REGISTRY)</SetProperty> <SetProperty Id="ADDTOPATH" After="AppSearch" Value="" Sequence="first">ADDTOPATH="0" OR (WIX_UPGRADE_DETECTED AND NOT ADDTOPATH_REGISTRY)</SetProperty>
<SetProperty Id="LicenseAccepted" After="AppSearch" Value="1">WIX_UPGRADE_DETECTED</SetProperty> <SetProperty Id="LicenseAccepted" After="AppSearch" Value="1">WIX_UPGRADE_DETECTED</SetProperty>
<!-- Prevent launch on installer exit if run as SYSTEM user -->
<SetProperty Id="LAUNCHAPPONEXIT" After="AppSearch" Value="">UserSID = "S-1-5-18"</SetProperty>
<FeatureRef Id="ProductFeature"> <FeatureRef Id="ProductFeature">
<ComponentRef Id="ApplicationShortcuts" /> <ComponentRef Id="ApplicationShortcuts" />