Date: Fri, 15 Sep 2006 15:51:46 GMT From: Volker Werth <volker@vwsoft.com> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/103304: pf accepts nonexistent queue in rules Message-ID: <200609151551.k8FFpkqW081524@www.freebsd.org> Resent-Message-ID: <200609151600.k8FG0X6o073903@freefall.freebsd.org>
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>Number: 103304
>Category: misc
>Synopsis: pf accepts nonexistent queue in rules
>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 Sep 15 16:00:32 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator: Volker Werth
>Release: 6.2-PRERELEASE
>Organization:
>Environment:
FreeBSD bellona.sz.vwsoft.com 6.2-PRERELEASE FreeBSD 6.2-PRERELEASE #9: Wed Sep 13 22:08:28 CEST 2006 root@bellona.sz.vwsoft.com:/usr/obj/usr/src/sys/BELLONA i386
>Description:
pf silently accepts rules which shall be queued to a non-existent queue.
Example:
if_int="vr0"
if_ext="ng0"
altq on $if_ext cbq bandwidth 64Kb queue { q_low}
queue q_low cbq( borrow rio default )
pass quick on $if_int all
pass quick on $if_ext proto icmp all queue ( nonexistent )
pass quick on $if_ext all queue ( q_low )
which creates _one_ queue but queues to two different (one non-exist) queues.
pfctl -gf [file] does not claim about the missing queue which might lead the administrator into unwanted results (haven't checked if it might lead pf into a failure situation).
pfctl -sa gives:
FILTER RULES:
pass quick on vr0 all
pass quick on ng0 proto icmp all queue nonexistent
pass quick on ng0 all queue q_low
ALTQ:
queue root_ng0 bandwidth 64Kb priority 0 cbq( wrr root ) {q_low}
queue q_low bandwidth 64Kb cbq( rio borrow default )
This is just an example rule. IF names and proto's used do not matter here.
>How-To-Repeat:
>Fix:
pf should at least claim about the nonexistent queue and deny loading.
>Release-Note:
>Audit-Trail:
>Unformatted:
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