CVE-2004-1031

fcronsighup in Fcron 2.0.1, 2.9.4, and possibly earlier versions allows
local users to bypass access restrictions and load an arbitrary
configuration file by starting an suid process and pointing the fcronsighup
configuration file to a /proc entry that is owned by root but modifiable by
the user, such as /proc/self/cmdline or /proc/self/environ.