Possible root exploit in ISC DHCP client.

[mellon () NOMINUM COM (Ted Lemon)]

Somebody at OpenBSD discovered a possible root exploit in the ISC DHCP
client.  This exploit is present in all versions of the ISC DHCP
client prior to 2.0pl1 and 3.0b1pl14, which I just released this
evening.  Anybody who is using versions of the ISC DHCP client other
than these is strongly urged to upgrade.  I would appreciate it if the
OpenBSD people would take a look at the new version to see if they
believe it is a complete fix, and let me know if it isn't.  In any
case, thanks for catching the error!  I'm sorry I'm being so vague
about how this got found, but I don't have time to read bugtraq
anymore, so I was notified roughly fourth-hand.

The ISC DHCP distribution is available at ftp://ftp.isc.org/isc/DHCP,
and anonymous CVS at http://www.isc.org/products/DHCP/anoncvs.html.
The head of the tree in anonymous CVS also contains the fix.

                               _MelloN_