kern/64778: IPFW2: incorrect parsing of 0.0.0.0/0 expression

Benny v. M. benny at pilgerer.de
Fri Mar 26 09:50:10 PST 2004


>Number:         64778
>Category:       kern
>Synopsis:       IPFW2: incorrect parsing of 0.0.0.0/0 expression
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Mar 26 09:50:09 PST 2004
>Closed-Date:
>Last-Modified:
>Originator:     Benjamin von Mossner
>Release:        FreeBSD 5.2.1-RELEASE-p3 i386
>Organization:
pilgerer.org e.V.
>Environment:
System: FreeBSD oberon.pilgerer.org 5.2.1-RELEASE-p3 FreeBSD 5.2.1-RELEASE-p3 #1: Mon Mar 22 17:53:55 CET 2004 root at oberon.pilgerer.org:/usr/obj/usr/src/sys/OBERON i386


    
>Description:
    ipfw2 evaluates 0.0.0.0/0 ip/net expression to 'me' instead of 'any'.

>How-To-Repeat:
    bensons:/home/benny# ipfw add allow ip from any to 0.0.0.0/0
    00200 allow ip from any to me
    bensons:/home/benny# ipfw add allow ip from 0.0.0.0/0 to any
    00300 allow ip from me to any
    bensons:/home/benny# ipfw add allow ip from \{ 0.0.0.0/0 or 1.1.1.1/1 \} to any 
    00400 allow ip from { me or 0.0.0.0/1 } to any
    ...
>Fix:

    I'm not familiar enough with the ipfw2.c code. So no patch/fix available.

>Release-Note:
>Audit-Trail:
>Unformatted:


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