Title: CHUID Privileged File Owner Changing Vulnerability
Severity: HIGH
Description:
chuid is a freely available, open source user id changing utility. It was written and is maintained by Scott Parish. It is designed for use on the Linux operating system.
A problem with chuid could make it possible for a remote user to change the ownership of privileged files. The problem is in the checking of file ownership.
The chuid utility is used to change the ownership of files uploaded to a server. Files uploaded to a predesignated directory can be changed to a specified user or group membership.
Due to insufficient checking of user input, it is possible for a remote user to change the ownership or group membership of a file owned by a privileged user.
Since this problem makes it possible for a remote user to change the ownership and/or group membership of a privileged file, it could lead to the attacker gaining elevated privileges.
Affected Products:
- chuid chuid 1.0.0
- chuid chuid 1.1.0
- chuid chuid 1.2.0
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