Re: sysrc (awk) bug
Eugene Grosbein <[email protected]>
| Newsgroups | gmane.os.freebsd.security.general |
|---|---|
| Message-ID | <[email protected]> |
30.05.2021 11:36, Fas Xmut via freebsd-security wrote: > I don't know if it is a security bug or not. When I use sysrc today, the error operations emptied my /etc/rc.conf, that's a small disaster, because my /etc/rc.conf is updated day by day, but now, it is empty. > > First, change your default root shell to sh/ksh or their derived shell. (I have tested, csh will not trigger that bug). > > Second, backup /etc/rc.conf to any other place. > > Then do the following commands: > > ------------------------------------------------------------------------ > # sysrc something_enable="NO" > # sysrc something_enable="YES >> " > awk: newline in string YES > ... at source line 1 > something_enable: NO -> YES > ------------------------------------------------------------------------ > > Now see what is inside /etc/rc.conf ? Everything is empty! only one thing in it: > > ------------------------------------------------------------------------ > something_enable="YES > " > ------------------------------------------------------------------------ What is your FreeBSD version? _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-security To unsubscribe, send any mail to "[email protected]"