helvis -- arbitrary file deletion problem

2004-11-24T00:00:00
ID 0CF3480D-5FDF-11D9-B721-00065BE4B5B6
Type freebsd
Reporter FreeBSD
Modified 2005-01-19T00:00:00

Description

The setuid root elvprsv utility, used to preserve recovery helvis files, can be abused by local users to delete with root privileges. The problem is that elvprsv deletes files when it thinks they have become corrupt. When elvprsv is pointed to a normal file then it will almost always think the file is corrupt and deletes it. This behavior may be exploited by local attackers to delete critical files.