From owner-doc-jp@jp.freebsd.org  Fri Mar 24 15:24:57 2000
Received: (from daemon@localhost)
	by castle.jp.freebsd.org (8.9.3+3.2W/8.7.3) id PAA95640;
	Fri, 24 Mar 2000 15:24:57 +0900 (JST)
	(envelope-from owner-doc-jp@jp.FreeBSD.org)
Received: from TYO202.gate.nec.co.jp (TYO202.gate.nec.co.jp [202.247.6.41])
	by castle.jp.freebsd.org (8.9.3+3.2W/8.7.3) with ESMTP id PAA95633
	for <doc-jp@jp.freebsd.org>; Fri, 24 Mar 2000 15:24:56 +0900 (JST)
	(envelope-from y-koga@jp.FreeBSD.org)
Received: from mailsv4.nec.co.jp (mailsv4-le1 [192.168.1.93])
	by TYO202.gate.nec.co.jp (8.9.3/3.7W00031314) with ESMTP id PAA07714
	for <doc-jp@jp.freebsd.org>; Fri, 24 Mar 2000 15:24:53 +0900 (JST)
Received: from mmssv.mms.mt.nec.co.jp (mmssv.mms.mt.nec.co.jp [133.201.63.216]) by mailsv4.nec.co.jp (8.9.3/3.7W-MAILSV4-NEC) with ESMTP
	id PAA16533 for <doc-jp@jp.freebsd.org>; Fri, 24 Mar 2000 15:24:53 +0900 (JST)
Received: from koga.do.mms.mt.nec.co.jp (koga.do.mms.mt.nec.co.jp [10.16.5.16]) by mmssv.mms.mt.nec.co.jp (8.8.4+2.7Wbeta4/3.4W3MMS96052011) with ESMTP id PAA27086 for <doc-jp@jp.freebsd.org>; Fri, 24 Mar 2000 15:21:27 +0900 (JST)
Received: from localhost (localhost [127.0.0.1])
	by koga.do.mms.mt.nec.co.jp (8.10.0/3.7W-kai) with ESMTP id e2O6Ooi26320;
	Fri, 24 Mar 2000 15:24:50 +0900 (JST)
Message-Id: <200003240624.e2O6Ooi26320@koga.do.mms.mt.nec.co.jp>
To: doc-jp@jp.freebsd.org
In-Reply-To: <200003230450.NAA19671@mail.geocities.co.jp>
References: <20000315173443.F231737BA56@hub.freebsd.org>
	<200003230450.NAA19671@mail.geocities.co.jp>
X-Mailer: Mew version 1.94.2 on Emacs 19.34 / Mule 2.3 (SUETSUMUHANA)
Mime-Version: 1.0
Content-Type: Text/Plain; charset=iso-2022-jp
Content-Transfer-Encoding: 7bit
Date: Fri, 24 Mar 2000 15:24:49 +0900 (JST)
From: Koga Youichirou <y-koga@jp.freebsd.org>
X-Dispatcher: imput version 20000228(IM140)
Lines: 94
Reply-To: doc-jp@jp.freebsd.org
Precedence: list
X-Distribute: distribute version 2.1 (Alpha) patchlevel 24e+000315
X-Sequence: doc-jp 7211
Subject: [doc-jp 7211] Re: ANNOUNCE: FreeBSD Security Advisory:
 FreeBSD-SA-00:08.lynx
Errors-To: owner-doc-jp@jp.freebsd.org
Sender: owner-doc-jp@jp.freebsd.org
X-Originator: y-koga@jp.freebsd.org

Hiroki Sato <hrs@geocities.co.jp>:
>  SA-00:08.lynx $B$NF|K\8lLu$G$9!#(B

$B$Q$A$Q$A$Q$A!y(B

> =============================================================================
> FreeBSD-SA-00:08                                           Security Advisory
>                                                                 FreeBSD, Inc.
$B!D(B $B$5$/$C$HN,(B $B!D(B
> I.   $BGX7J(B - Background
> 
> Lynx is a popular text-mode WWW browser, available in several versions
> including SSL support and Japanese language localization.
> 
> lynx $B$OM-L>$J%F%-%9%H%b!<%I(B WWW $B%V%i%&%6$G!"(BSSL $B%5%]!<%H$NDI2C$d(B
> $BF|K\8l2=$5$l$?$b$N$J$I!"$$$/$D$+$N%P!<%8%g%s$,$"$j$^$9!#(B

popular $B$O!V?M5$$N$"$k!W$G$$$$$H;W$&!#(B
$B!V(BSSL$BBP1~HG$dF|K\8lBP1~HG$J$I!"!W(B

> II.  $BLdBj$N>\:Y(B - Problem Description
> 
> The lynx software is written in a very insecure style and contains numerous
> potential and several proven security vulnerabilities (publicized on the
> BugTraq mailing list) exploitable by a malicious server.
> 
> lynx $B$O!"%;%-%e%j%F%#$r$[$H$s$I9MN8$7$J$$%9%?%$%k$G=q$+$l$F$$$k$?$a!"(B
> $B@x:_E*$J%;%-%e%j%F%#>e$N<eE@$r?tB?$/4^$s$G$$$^$9!#$^$?!"(B
> (BugTraq $B%a!<%j%s%0%j%9%H$G8x3+$5$l$?(B)$B$=$N$&$A$N$$$/$D$+$O!"(B
> $B0-0U$N$"$k%5!<%P$+$i(B exploit $B2DG=$G$"$k$3$H$,3N$+$a$i$l$F$$$^$9!#(B

$B$=$7$F!"$=$N$&$A$N$$$/$D$+$O0-0U$r;}$C$?%5!<%P$K$h$j0-MQ2DG=$J$b$N$G$9(B 
(Bugtraq $B%a!<%j%s%0%j%9%H$G8x3+$5$l$^$7$?(B)$B!#(B

exploit $B$O>/$70ULu$7$F!"IT@5MxMQ$H$+0-MQ$H$+!"967b$J$s$+$K$7$F$7$^$C$F(B
$B$$$$$H;W$$$^$9!#8e$NJ}$G$bF1MM!#(B

> The lynx ports are not installed by default, nor are they "part of FreeBSD"
> as such: they are part of the FreeBSD ports collection, which contains over
> 3100 third-party applications in a ready-to-install format.
> 
> lynx $B$N(B port $B$O!"%G%U%)%k%H$G%$%s%9%H!<%k$5$l$k$b$N$G$O$J$/!"(B

$B$3$l!"(Bports $B$8$c$J$$$H!"(B

> FreeBSD $B%7%9%F%`$N0lIt$r9=@.$9$k$b$N$G$b$"$j$^$;$s!#(B
> $B$=$l$i$O!"(B3100 $B$rD6$($k%5!<%I%Q!<%F%#@=$N%"%W%j%1!<%7%g%s$,(B

$B$3$N!V$=$l$i!W$,JQ!#(B

> V.   $B=$@5=hCV(B - Solution
> 
> Unfortunately, there is no simple fix to the security problems with the
> lynx code: it will require a full review by the lynx development team and
> recoding of the affected sections with a more security-conscious attitude.
> 
> $BET9g$N0-$$$3$H$K!"$3$N(B lynx $B%3!<%I$KB8:_$9$k%;%-%e%j%F%#>e$NLdBjE@$r(B
> $B4JC1$K=$@5$9$kJ}K!$O$"$j$^$;$s!#$=$l$K$O!"(Blynx $B3+H/%A!<%`$K$h$k40A4$J8!>Z$H!"(B
> $B$h$j%;%-%e%j%F%#$r9MN8$7$?7A$G$N!"1F6A$9$kItJ,$N:F%3!<%G%#%s%0$rI,MW$H$7$^$9!#(B

Unfortunately $B$O!V;DG0$J$,$i!W$NJ}$,$$$$$H;W$&!#(B

> In the meantime, there are two other text-mode WWW browsers available in
> FreeBSD ports: www/w3m (also available in www/w3m-ssl for an SSL-enabled
> version, and japanese/w3m for Japanese-localization) and www/links.
> 
> $B$=$l$^$GMxMQ$G$-$k$b$N$H$7$F!"(BFreeBSD Ports Collection $B$K$O(B
> $BJL$NFs$D$N%F%-%9%H%b!<%I(B WWW $B%V%i%&%6$,4^$^$l$F$$$^$9!#$=$l$O(B
> www/w3m(SSL $B$r%5%]!<%H$9$k(B www/w3m-ssl $B$H(B $BF|K\8lHG$N(B japanese/w3m $B$b$"$j$^$9(B)
> $B$H(B www/links $B$G$9!#(B

$B!VJL$N!D!W$h$j$O!VB>$K(B www/w3m (...) $B$H(B www/links $B$H$$$&%F%-%9%H%b!<%I(B
$B$N(B WWW $B%V%i%&%6$,Fs$D4^$^$l$F$$$^$9!#!W$+$J!#(B

$B$A$J$_$K!"$3$3$G$O4X78$J$$$1$l$I!":G?73+H/HG$G$O!"<c438!F$$N$"$H$,8+$i(B
$B$l$^$9!#$I$l$/$i$$$^$7$K$J$C$?$N$+$OCN$i$J$$$1$l$I!D(B

> Note that the FreeBSD Security Officer does not make any recommendation
> about the security of these two browsers - in particular, they both appear
> to contain potential security risks, and a full audit has not been
> performed, but at present no proven security holes are known. User beware -
> please watch for future security advisories which will publicize any such
> vulnerabilities discovered in these ports.
> 
> $B$?$@$7!"(BFreeBSD Security Officer $B$H$7$F!"$3$l$iFs$D$N%V%i%&%6$r(B
> $B%;%-%e%j%F%#$N8+CO$+$i?d>)$7$F$$$k$H$$$&$o$1$G$O$"$j$^$;$s$N$G$4Cm0U2<$5$$!#(B
> $B$3$l$i$OFs$D$H$b@x:_E*$J%;%-%e%j%F%#%j%9%/$r4^$s$G$$$k$H;W$o$l$^$9$,!"(B
> $B40A4$JD4::$,9T$J$o$l$F$$$J$$$?$a!"8!>Z2DG=$J%;%-%e%j%F%#%[!<%k$O8=;~E@$G(B
> $BCN$i$l$F$$$^$;$s!#MxMQ$5$l$k>l9g$K$O!"$3$l$iFs$D$N(B port $B$N(B
> $B%;%-%e%j%F%#>e$N<eE@$K4X$9$k:#8e$N4+9p$KCm0U$9$k$h$&$K$*4j$$$7$^$9!#(B

$B!V2<$5$$!W"*!V$/$@$5$$!W(B
----
$B$3$,$h$&$$$A$m$&(B
