This is a minor security concern.
It might also break the ability of "inc" to access the
Mail user agents (MUA) were modified in Red Hat 5.2 to depend *only*
on fcntl style locking on mail boxes. That means that the old
requirement that MUA need write access to the spool directory in
order to implement dot-file locking is no longer necessary. So I
would claim that setgid mail is not required in nmh.
Please reopen this bug with a more complete description of a
reproducible problem if I am mistaken.
OK - so maybe sgid mail isn't required.
However, the bug is that sgid root is what the program currently has
and this _definitely_ isn't required. Having it without needing it
is a security concern.
Thanks for reopening -- I noticed that the setgid root
created a different problem right after closing the original
The /usr/bin/inc became setgid root (rather than mail) during
packaging. The setgid is removed in nmh-0.27-3. The security
issues appear minor but are currently being assessed.
Since there are no known exploits of the /usr/bin/inc setgid root
anomaly, there will not be a security errata to correct this bug
in Red Hat 5.2.