Possible security issue with jails

Poul-Henning Kamp phk at phk.freebsd.dk
Tue Jan 11 14:06:15 PST 2005


In message <20050111221055.GD68350 at micah.tamu.edu>, Micah writes:
>Howdy!
>
>I'm not sure if this is actually an issue, feature or a bug,  but I have found
>that inside a jail, the jailed root user is able to sniff traffic (and enable
>promiscuous mode) on at least the interface of the IP address the jail is attached
>to.

Only if you leave bpf devices in the devfs mounted on the jail.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.


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