sudo -- Potential out-of-bounds write for small passwords

SO-AND-SO reports:

Sudo 1.8.0 through 1.9.12, with the crypt() password backend,
contains a plugins/sudoers/auth/passwd.c array-out-of-bounds
error that can result in a heap-based buffer over-read. This
can be triggered by arbitrary local users with access to sudo
by entering a password of seven characters or fewer. The impact
could vary depending on the system libraries, compiler,
and processor architecture.