Description of problem:
Add runas_check_shell default option which will cause sudo to test target user shell againts valid system shells from /etc/shells.
This may help to workaround a situation described in likely CVE bz1786708.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.