GHSA-jx4p-m4wm-vvjg: Malicious directory junction can cause WiX RemoveFoldersEx to possibly delete elevated files

1. GitHub Advisory Database
2. GitHub Reviewed
3. CVE-2024-29188

Malicious directory junction can cause WiX RemoveFoldersEx to possibly delete elevated files

High severity GitHub Reviewed Published Mar 23, 2024 in wixtoolset/issues • Updated Mar 25, 2024

Package

nuget WixToolset.Util.wixext (NuGet)

Affected versions

< 4.0.5

< 3.14.1

>= 4.0.0, < 4.0.5

Summary

The custom action behind WiX’s RemoveFolderEx functionality could allow a standard user to delete protected directories.

Details

RemoveFolderEx deletes an entire directory tree during installation or uninstallation. It does so by recursing every subdirectory starting at a specified directory and adding each subdirectory to the list of directories Windows Installer should delete. If the setup author instructed RemoveFolderEx to delete a per-user folder from a per-machine installer, an attacker could create a directory junction in that per-user folder pointing to a per-machine, protected directory. Windows Installer, when executing the per-machine installer after approval by an administrator, would delete the target of the directory junction.

References

• GHSA-jx4p-m4wm-vvjg
• https://nvd.nist.gov/vuln/detail/CVE-2024-29188
• wixtoolset/wix@2e5960b
• wixtoolset/wix3@93eeb5f

Published to the GitHub Advisory Database

Mar 25, 2024

Last updated

Mar 25, 2024