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Subject: Re: ANNOUNCE: FreeBSD Security Advisory: FreeBSD-SA-00:11.ircii
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 $B$3$N%a!<%k$O(B, announce-jp $B$KN.$l$?(B

  Subject: ANNOUNCE: FreeBSD Security Advisory: FreeBSD-SA-00:11.ircii
  From: FreeBSD Security Officer <security-officer@freebsd.org>
  Date: Mon, 10 Apr 2000 13:58:54 -0700 (PDT)
  Message-Id: <200004102058.NAA07113@freefall.freebsd.org>
  X-Sequence: announce-jp 413

 $B$rF|K\8lLu$7$?$b$N$G$9(B. 

 $B86J8$O(B PGP $B=pL>$5$l$F$$$^$9$,(B, $B$3$NF|K\8lLu$O(B PGP $B=pL>$5$l$F$$$^$;$s(B. 
 $B%Q%C%AEy$NFbMF$,2~cb$5$l$F$$$J$$$3$H$r3NG'$9$k$?$a$K(B PGP $B$N%A%'%C%/$r(B
 $B9T$J$&$K$O(B, $B86J8$r;2>H$7$F$/$@$5$$(B. 

 $BF|K\8lLu$O(B FreeBSD $BF|K\8l%I%-%e%a%s%F!<%7%g%s%W%m%8%'%/%H(B(doc-jp)$B$,(B
 $B;29M$N$?$a$KDs6!$9$k$b$N$G(B, $BK]Lu<T$*$h$S(B doc-jp $B$O(B $B$=$NFbMF$K$D$$$F(B
 $B$$$+$J$kJ]>Z$b$$$?$7$^$;$s(B. $BF|K\8lLu$K$D$$$F$N$*Ld$$9g$o$;$O(B,
 doc-jp@jp.freebsd.org $B$^$G$*4j$$$7$^$9(B.

--($B$3$3$+$i(B)

=============================================================================
FreeBSD-SA-00:11                                           Security Advisory
                                                                FreeBSD, Inc.

$B%H%T%C%/(B:	ircII port contains a remote overflow

$BJ,N`(B:           ports
$B%b%8%e!<%k(B:     ircII
$B9pCNF|(B:         2000-04-10
$B%/%l%8%C%H(B:	Derek Callaway <super@UDEL.EDU> (BugTraq ML $B$h$j(B)
		"bladi" <bladi@EUSKALNET.NET> (BugTraq ML $B$h$j(B)
$B1F6AHO0O(B:       $B=$@5F|0JA0$N(B Ports collection 
$B=$@5F|(B:         2000-03-19
FreeBSD $B$K8GM-$+(B:   NO

I.   $BGX7J(B - Background

ircII $B$O?M5$$N$"$k%F%-%9%H%b!<%I$N(B IRC $B%/%i%$%"%s%H$G$9(B.  

II.  $BLdBj$N>\:Y(B - Problem Description

ircII $B%P!<%8%g%s(B 4.4 $B$N(B /DCC CHAT $B%3%^%s%I$K$O(B, $B%j%b!<%H$+$i0-MQ$5$l$k(B
$B4m81@-$N$"$k%P%C%U%!%*!<%P%U%m!<LdBj$,4^$^$l$F$$$^$9(B.  $B$3$l$r0-MQ$9$k(B
$B$3$H$G(B, $B%j%b!<%H%f!<%6$O%/%i%$%"%s%H%f!<%6$N8"8B$GG$0U$N%3!<%I$r(B
$B<B9T$9$k$3$H$,2DG=$G$9(B.  

$B$3$N%P%0$O(B 1997 $BG/$K(B, $B5l%P!<%8%g%s$N(B ircII $B$G=i$a$FJs9p$5$l$^$7$?(B.  
$B$7$+$7(B, $B$=$N;~$K=$@5$5$l$J$+$C$?$N$+(B, $B:G6a$K$J$C$FF1$8LdBj$,(B
$B$=$l$H$OFHN)$K:FH/8+$5$l$^$7$?(B.  $B$=$NEv;~(B ports $B$KB8:_$7$F$$$?(B
$B%P!<%8%g%s$N(B ircII $B$O(B, $B3+H/$,?tG/A0$+$iDd;_$7$F$*$j(B, $B8=:_$O(B, 
$BH/8+$5$l$?LdBj$r(B($B$*$=$i$/B>$NLdBj$b4^$a$F(B)$B2r7h$7$??M!9$K$h$C$F(B
$BJ]<i$,B3$1$i$l$F$$$^$9(B.  $B8=:_(B FreeBSD $B$,Ds6!$7$F$$$k$N$O(B, $B$3$N=$@5$5$l$?(B
$B%P!<%8%g%s$N(B ircII $B$G$9(B.  

ircII $B$N(B port $B$O(B, $B%G%U%)%k%H$G%$%s%9%H!<%k$5$l$k$b$N$G$O$J$/(B,
FreeBSD $B%7%9%F%`$N0lIt$r9=@.$9$k$b$N$G$b$"$j$^$;$s(B.  $B$=$l$O(B, 3200 $B$r(B
$BD6$($k%5!<%I%Q!<%F%#@=$N%"%W%j%1!<%7%g%s$,$9$0$K%$%s%9%H!<%k$G$-$k7A$G(B
$B<}$a$i$l$F$$$k(B FreeBSD Ports Collection $B$N0lIt$G$9(B.  FreeBSD 4.0 $B$K$O(B, 
$B=$@5$5$l$?(B ircII package $B$O4^$^$l$F$$$^$;$s(B.  $B$3$l$O(B, $B$3$N%;%-%e%j%F%#>e$N(B
$B<eE@$,Js9p$5$l$?$N$,%j%j!<%9;~E@$h$j8e$G$"$C$?$3$H$+$i(B, $B%j%j!<%9$K(B
$B4V$K9g$o$;$F(B ircII port $B$r99?7$9$k$3$H$,$G$-$J$+$C$?$?$a$G$9(B.  

FreeBSD $B$G$O(B, $B$3$N$h$&$J%5!<%I%Q!<%F%#@=%"%W%j%1!<%7%g%s$N%;%-%e%j%F%#(B
$BLdBj$KBP$7$F(B, $BFC$K2?$+$r<gD%$9$k$3$H$O$"$j$^$;$s(B($BLuCm(B: Ports Collection $B$K(B
$BF~$C$F$$$k$+$i$H$$$C$F(B, FreeBSD $B$N3+H/<T$?$A$,$=$N%"%W%j%1!<%7%g%s$,(B
$B0BA4$G$"$k$HI>2A$7$?$o$1$G$O$"$j$^$;$s(B). $B$?$@$7(B, $B%;%-%e%j%F%#LdBj$K(B
$BBP$7$FBg$-$J1F6A$r;}$D$h$&$J(B ports $B$KBP$9$k%;%-%e%j%F%#4F::$rDs6!$9$Y$/(B,
$B8=:_EXNOCf$G$9(B. 

III. $B1F6AHO0O(B - Impact

$B%j%b!<%H%f!<%6$O(B, ircII $B$r<B9T$7$F$$$k%f!<%68"8B$G(B
$B%m!<%+%k%7%9%F%`>e$NG$0U$N%3!<%I$r<B9T$9$k$3$H$,2DG=$G$9(B.   

ircII $B$N(B port $B$b$7$/$O(B package $B$r%$%s%9%H!<%k$7$F$$$J$1$l$P(B, $B$=$N(B
$B%7%9%F%`$K$3$NLdBj$K$h$k%;%-%e%j%F%#>e$N<eE@$O$"$j$^$;$s(B.  $B$7$+$7B>$K$b(B
Epic $B$d(B BitchX $B$r4^$`(B ircII $BM3Mh$N(B IRC $B%/%i%$%"%s%H$,$$$/$D$+B8:_$7$^$9(B.
$B8=;~E@$G$O(B, $B$3$NLdBj$K$h$k%;%-%e%j%F%#>e$N<eE@$,(B, $B$3$l$i(B ircII $BM3Mh$N(B
IRC $B%/%i%$%"%s%H$KB8:_$9$k$+$I$&$+L@$i$+$K$5$l$F$$$^$;$s(B.  

IV.  $BBP1~:v(B - Workaround

ircII $B$N(B port $B$,%$%s%9%H!<%k$5$l$F$$$k>l9g$K$O(B, $B$=$l$r:o=|$7$F$/$@$5$$(B.  

V.   $B=$@5=hCV(B - Solution

1) Ports Collection $BA4BN$r99?7$7$F(B, ircII $B$N(B port $B$r:F%3%s%Q%$%k$9$k(B.  

2) $B0J2<$N>l=j$+$i(B, $B=$@5F|$h$j8e$K:n@.$5$l$??7$7$$(B package $B$rF~<j$7$F(B
   $B:F%$%s%9%H!<%k$9$k(B.

ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-3-stable/irc/ircII-4.4S.tgz
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-3-stable/irc/ircII-4.4S.tgz
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-3-stable/irc/ircII-4.4S.tgz
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/irc/ircII-4.4S.tgz
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/irc/ircII-4.4S.tgz

3) $B0J2<$N>l=j$+$i(B ircII $B$N(B $B?7$7$$(B port $B%9%1%k%H%s$r%@%&%s%m!<%I$7(B, 
   $B$=$l$rMxMQ$7$F(B ircII $B$N(B port $B$r:F%3%s%Q%$%k$9$k(B.  

http://www.freebsd.org/ports/

4) portcheckout $B%f!<%F%#%j%F%#$r;H$&$H(B, $B>e5-(B (3) $B$r<+F0E*$K(B
   $B9T$J$&$3$H$,$G$-$^$9(B.  portcheckout $B$O(B,
   /usr/ports/devel/portcheckout $B$d(B, $B0J2<$N>l=j$+$iF~<j2DG=$G$9(B. 

ftp://ftp.freebsd.org/pub/FreeBSD/ports/packages/devel/portcheckout-1.0.tgz
