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Subject: Re: ANNOUNCE: FreeBSD Security Advisory: FreeBSD-SA-00:14.imap-uw
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 $B$3$N%a!<%k$O(B, announce-jp $B$KN.$l$?(B

  Subject: ANNOUNCE: FreeBSD Security Advisory: FreeBSD-SA-00:14.imap-uw
  From: FreeBSD Security Officer <security-officer@freebsd.org>
  Date: Mon, 24 Apr 2000 15:46:34 -0700 (PDT)
  Message-Id: <20000424224634.8A4B337B5AA@hub.freebsd.org>
  X-Sequence: announce-jp 422

 $B$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$,;29M$N(B
 $B$?$a$KDs6!$9$k$b$N$G(B, doc-jp $B$O(B $B$=$NFbMF$K$D$$$F$$$+$J$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-00:14                                           Security Advisory
                                                                FreeBSD, Inc.

$B%H%T%C%/(B:	imap-uw contains security vulnerabilities for "closed"
		mail servers

$BJ,N`(B:           ports
$B%b%8%e!<%k(B:     imap-uw
$B9pCNF|(B:         2000-04-24
$B%/%l%8%C%H(B:	Michal Zalewski <lcamtuf@DIONE.IDS.PL>
		Michal Szymanski <siva9@CLICO.PL> (BugTraq ML $B$h$j(B)
$B1F6AHO0O(B:       Ports collection
$B=$@5F|(B:         $B2<5-;2>H(B.
$B%Y%s%@$NBP1~(B:	$BLdBj$O3NG':Q$_$@$,(B, $B40A4$JBP1~J}K!$ODs6!$5$l$F$$$J$$(B.
FreeBSD $B$K8GM-$+(B:   NO

I.   $BGX7J(B - Background

imap-uw $B$O(B, $B%o%7%s%H%sBg3X$G3+H/$5$l$?(B, $B?M5$$N$"$k(B IMAP4/POP2/POP3
$B%a!<%k%5!<%P$G$9(B.

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

IMAP $B%5!<%P$K%m%0%$%s$7$?(B($B$D$^$j(B, $B@5$7$$%Q%9%o!<%I$J$I$rDs<($9$k$3$H$G(B
$BG'>Z$r<u$1$?(B)$B%f!<%6$KBP$7$F(B, $BHs>o$KB?$/$N%P%C%U%!%*!<%P%U%m!<LdBj$,(B
$BB8:_$7$^$9(B.  $B%f!<%6$,%m%0%$%s$9$k$H(B, imapd $B$O(B root $B8"8B$rL58z2=$7(B,
$B%m%0%$%s$7$?%f!<%6$N8"8B$GF0:n$9$k$h$&$K$J$j$^$9(B.  $B$=$N$?$a(B,
$B8"8B$O$=$N%f!<%6$K8B$i$l$^$9$,(B, $B$3$N%P%C%U%!%*!<%P%U%m!<LdBj$r(B
$B0-MQ$9$k$3$H$G%3!<%I$r<B9T$9$k$3$H$,$G$-$^$9(B.

$B$7$?$,$C$F(B, $B$3$N%;%-%e%j%F%#>e$N<eE@$O!VJD$8$?!W%a!<%k%5!<%P$K(B
$B$*$$$F$N$_LdBj$K$J$j$^$9(B.  $B!VJD$8$?!W%a!<%k%5!<%P$H$O(B, $B%a!<%k$r(B
$BMxMQ$9$k%f!<%6$KBP$7$F(B, $B86B'E*$KBPOC7?%m%0%$%s$r5v2D$7$F$$$J$$$b$N$r;X$7$^$9(B.
$B%f!<%6$K%m%0%$%s$r5v2D$7$F$$$?$j(B, $B%3!<%I$r<B9T$G$-$k%7%9%F%`$N>l9g(B,
$B$3$N%;%-%e%j%F%#>e$N<eE@$O$[$H$s$ILdBj$H$J$j$^$;$s(B.

$B$?$@$7(B, $B%f!<%6$,$3$N<eE@$r0-MQ$7$F%f!<%6%"%+%&%s%H$X$N%"%/%;%9$r3MF@$9$k(B
$B$3$H$,$G$-$?>l9g(B, $B$h$j6/$$8"8B$rF@$k$?$a$K(B, $B$5$i$J$k967b$r(B
$B%m!<%+%k(B($B$^$?$O%j%b!<%H(B)$B%^%7%s$KBP$7$F=E$M$k2DG=@-$,$"$k(B,
$B$H$$$&$3$H$KCm0U$7$F$/$@$5$$(B.

imap-uw $B$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$9(B.  $B$3$N%;%-%e%j%F%#>e$N(B
$B<eE@$,H/8+$5$l$?$N$,%j%j!<%9;~E@$h$j8e$G$"$C$?$3$H$+$i(B, FreeBSD 4.0 $B$K(B
$B4^$^$l$k(B Ports Collection $B$K$b(B, $B$3$NLdBj$,B8:_$7$^$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%#LdBj$K(B
$BBP$7$F(B, $BFC$K2?$+$r<gD%$9$k$3$H$O$"$j$^$;$s(B($BLuCm(B: Ports Collection $B$KF~$C$F(B
$B$$$k$+$i$H$$$C$F(B, FreeBSD $B$N3+H/<T$?$A$,$=$N%"%W%j%1!<%7%g%s$,0BA4$G$"$k$H(B
$BI>2A$7$?$o$1$G$O$"$j$^$;$s(B). $B$?$@$7(B, $B%;%-%e%j%F%#LdBj$KBP$7$FBg$-$J1F6A$r(B
$B;}$D$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

IMAP $B%5!<%P$K%a!<%k%"%+%&%s%H$r=jM-$7$F$$$k%f!<%6$O(B, $B%5!<%P%^%7%s>e$K(B
$B$*$$$F(B, $B<+?H$N%f!<%68"8B$GG$0U$N%3!<%I$r<B9T$9$k$3$H$,2DG=$G$9(B.
$B$3$l$O(B, $BBPOC7?%7%'%k%m%0%$%s$,6X;_$5$l$F$$$k(B, $B$$$o$f$k!VJD$8$?!W%a!<%k(B
$B%5!<%P$G$N$_(B, $B%;%-%e%j%F%#>e$NLdBj$K$J$k$H;W$o$l$^$9(B.

$B8=;~E@$G%;%-%e%j%F%#>e$N<eE@$NB8:_$,3NG'$5$l$F$$$k$N$O(B, imapd $B$@$1$G$9(B.
imap-uw port $B$K$h$j%$%s%9%H!<%k$5$l$k(B, $B$=$NB>$N%G!<%b%s(B(ipop2d/ipop3d)$B$K(B
$BF1MM$N<eE@$,B8:_$9$k$+$I$&$+$OITL@$G$9(B.

imap-uw $B$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.

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

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

2) $BFC$K(B IMAP $B$N5!G=$rI,MW$H$7$F$$$J$$(B($B$D$^$j(B POP2/POP3 $B$G==J,$J(B)$B>l9g$K$O(B,
   /etc/inetd.conf $B$K$"$k(B IMAP $B%G!<%b%s$rL58z2=$7(B, inetd $B$r:F5/F0$7$F$/$@$5$$(B.
   ($B$?$H$($P(B 'killall -HUP inetd' $B$H$$$&%3%^%s%I$r;HMQ$7$^$9(B)

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

$B;DG0$J$,$i(B, imapd $B$KB8:_$9$k$3$N%;%-%e%j%F%#>e$N<eE@$O(B, $B%3!<%I$N(B
$B9-$$HO0O$K$o$?$C$F$*$j(B, $B$=$l$i$r=$@5$9$k%Q%C%A$O8=;~E@$GDs6!$5$l$F$$$^$;$s(B.
$BBe$o$j$KMxMQ$G$-$k(B IMAP $B%5!<%P$H$7$F(B mail/cyrus $B$H$$$&(B port $B$,$"$j$^$9$,(B,
$B8=:_$N(B ports $B$K$O(B, $B$A$g$&$I(B imap-uw $B$HCV$-49$($k$3$H$,$G$-$k$h$&$J(B port $B$O(B
$B$"$j$^$;$s(B.  cyrus $B$O(B imap-uw $B$H$O0[$J$k@_Dj$HA`:n$rI,MW$H$9$k$?$a(B,
$BB?$/$NMxMQ<T$K$H$C$F(B, $B$=$l$O(B imap-uw $B$NBeBX$H$7$F$U$5$o$7$$$b$N$G$O(B
$B$J$$$G$7$g$&(B.

imap-uw $B$N%=!<%9$KBP$9$k%;%-%e%j%F%#D4::$,40N;$7(B, $B<eE@$K=$@5%Q%C%A$,(B
$BE,MQ$5$l$k$^$G(B, $B!VJD$8$?!W(Bimapd $B%5!<%P$N4IM}<T$O(B, $B$=$N%5!<%P$G(B
$B%W%m%0%i%`%3!<%I$r<B9T$G$-$k%f!<%6$K$h$k1F6A$r(B, ($B?/F~$7$h$&$H$9$k(B
$B%f!<%6$K$h$kHo32$r:G>.8B$K$9$k$?$a(B, $B%^%7%s$N%m!<%+%k%;%-%e%j%F%#$r(B
$B6/2=$7$F(B) $B2DG=$J8B$j>.$5$/$9$kBP:v$r$H$k$3$H$r?d>)$7$^$9(B.  

$B$3$N%;%-%e%j%F%#4+9p$O(B, imap-uw $B$KB8:_$9$k(B
$B$3$N4{CN$N<eE@$KBP$7$FBP:v$,9T$J$o$l$?8e$K(B, $B99?7$5$l$kM=Dj$G$9(B.
