git: dhclient - Be more strict in check_option().

[Antonio Huete Jimenez <tuxillo@xxxxxxxxxxxxxxxxxxxxxxx>]

commit 313ef36c6db715415e5498d028f29a4acae56ea0
Author: Antonio Huete Jimenez <tuxillo@quantumachine.net>
Date:   Wed Aug 1 21:43:24 2012 +0200

    dhclient - Be more strict in check_option().
    
    ISC dhclient had a buffer overflow: http://www.kb.cert.org/vuls/id/410676 and
    while our dhclient is not vulnerable to that, it got us looking at how the
    subnet mask option is handled.
    This limits specific ip address options to length 4 in conformance with RFC 2132.
    
    Taken-from: OpenBSD

Summary of changes:
 sbin/dhclient/dhclient.c |   30 ++++++++++++++++++++++--------
 1 files changed, 22 insertions(+), 8 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/313ef36c6db715415e5498d028f29a4acae56ea0


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