kern/186570: ipfw interprets incomplete (3 octets) ip in a table as an wildcard that match whole traffic.
Marcin Mazur
willyvmm at gmail.com
Sun Feb 9 00:20:00 UTC 2014
>Number: 186570
>Category: kern
>Synopsis: ipfw interprets incomplete (3 octets) ip in a table as an wildcard that match whole traffic.
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Feb 09 00:20:00 UTC 2014
>Closed-Date:
>Last-Modified:
>Originator: Marcin Mazur
>Release: 9.2 RELEASE
>Organization:
>Environment:
FreeBSD browar.ITit.dk 9.2-RELEASE-p3 FreeBSD 9.2-RELEASE-p3 #0: Sat Jan 11 03:25:02 UTC 2014 root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64
>Description:
I just upgraded from 9.0 to 9.2, and lost contact to server, finally after investigation i found that ipfw interprets incomplete (3 octets) ip in a table as an wildcard that match whole traffic.
>How-To-Repeat:
ipfw table 4 add 1.2.3.4/24
ipfw table 4 list
1.2.3.0/24 0
ipfw table 4 add 1.2.3/24
ipfw table 4 list
::/0 0
1.2.3.0/24 0
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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