https://forum.synology.com/enu/viewtopic.php?t=116116
Found a simple and easy solution
do this:
- log in to DSM Web interface as admin
- Control Panel -> "Task scheduler"
-
Add a "user script":
-
make it disabled:
-
insert command which will reset the correct modes (chmod ug=r,o= /etc/sudoers)
-
run it:
Should be fixed now
