Message from Michal Zalewski at Jul 5 14:20 in parts:
MZ> For script kiddiez, here's an exploit for recent vixie-cron vulnerability,
MZ> giving instant root shell. Thought it will help script kiddies, but as
MZ> Martin Schulze included almost step-by-step guide how to abuse Sendmail
MZ> flags, this exploit won't bring anything shocking - simply, it's working
MZ> example.
man sendmail:
/-C
...skipping...
-Cfile Use alternate configuration file. Sendmail refuses to run
as root if an alternate configuration file is specified.
and it does, for sure %-).
Just tested this on different versions of FreeBSD and had no effects
except Mail Delivery message:
The following address has permanent fatal errors:
-C/tmp/vixie-cf gvs
So, sendmail _really_ refuses to accept -C key when run as root
SY, Seva Gluschenko, just stranger at the Road. | http://gvs.rinet.ru/
Cronyx Plus / RiNet network administrator. | GVS-RIPE | GVS3-RIPN
