Pieter de Boer <[email protected]> 2010-08-27: > On 08/27/2010 10:32 AM, Vadim Goncharov wrote: > >This is a froward message from tcpdump-workers mail list: > >=== 8< ================>8 === > >$ sudo ./tcpdump -i any -G 1 -z ./test.sh -w dump port 55555 > >[sudo] password for user: > >tcpdump: listening on any, link-type LINUX_SLL (Linux cooked), capture size > >65535 bytes > >(generate some traffic on port 55555) > >r...@blaa ~/temp/tcpdump-4.1.1$ id > >uid=0(root) gid=0(root) groups=0(root) > > > >Is this known and accepted? Could this option maybe be implemented > >differently? > > In my opinion, if you allow people to run tools as root using sudo, > you'd better make sure those tools don't allow attackers to easily gain > root access. In the case of tcpdump, the '-w' flag most probably already > allowed that, although '-z' is a bit more convenient to the attacker. > > As a solution, configure your sudo correctly, only allowing specific > tcpdump command line options (or option sets) to be used.
Or use NOEXEC on the tcpdump spec in your sudo configuration, see sudoers(5) for details. -- Daniel Roethlisberger http://daniel.roe.ch/ _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-security To unsubscribe, send any mail to "[email protected]"
