From owner-announce-jp@jp.FreeBSD.org Wed Mar 26 10:09:04 2003
Received: (from daemon@localhost)
	by castle.jp.FreeBSD.org (8.11.6+3.4W/8.11.3) id h2Q194n46230;
	Wed, 26 Mar 2003 10:09:04 +0900 (JST)
	(envelope-from owner-announce-jp@jp.FreeBSD.org)
Message-Id: <20030326.083939.48534544.hrs@eos.ocn.ne.jp>
To: announce-jp@jp.FreeBSD.org
From: Hiroki Sato <hrs@eos.ocn.ne.jp>
In-Reply-To: <200303201610.h2KGA230008462@freefall.freebsd.org>
References: <200303201610.h2KGA230008462@freefall.freebsd.org>
X-PGPkey-fingerprint: BDB3 443F A5DD B3D0 A530  FFD7 4F2C D3D8 2793 CF2D
X-Mailer: Mew version 2.2 on Emacs 20.7 / Mule 4.0 (HANANOEN)
Mime-Version: 1.0
Content-Type: Text/Plain; charset=iso-2022-jp
Content-Transfer-Encoding: 7bit
X-ML-maintainer: owner-announce-jp@jp.FreeBSD.org
Precedence: list
Date: Wed, 26 Mar 2003 08:39:39 +0900
X-Sequence: announce-jp 1117
Subject: Re: ANNOUNCE: FreeBSD Security Advisory FreeBSD-SA-03:05.xdr
Sender: owner-announce-jp@jp.FreeBSD.org
X-Distribute: distribute version 2.1 (Alpha) patchlevel 24e+030304


FreeBSD $B%;%-%e%j%F%#4+9p(B $BF|K\8lHG(B
=============================================================================
FreeBSD-SA-03:05.xdr (2003-03-20)
 * remote denial-of-service in XDR encoder/decoder
=============================================================================

 $B$3$N%a!<%k$O(B, announce-jp $B$KN.$l$?(B

  Subject: ANNOUNCE: FreeBSD Security Advisory FreeBSD-SA-03:05.xdr
  From: FreeBSD Security Advisories <security-advisories@FreeBSD.org>
  Date: Thu, 20 Mar 2003 08:10:02 -0800
  Message-Id: <200303201610.h2KGA230008462@freefall.freebsd.org>
  X-Sequence: announce-jp 1114

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

 $B86J8$O(B PGP $B=pL>$5$l$F$$$^$9$,!"$3$NF|K\8lLu$O(B PGP $B=pL>$5$l$F$$$^$;$s!#(B
 $B=$@5%Q%C%AEy$NFbMF$,2~$6$s$5$l$F$$$J$$$3$H$r3NG'$9$k$?$a$K(B PGP $B=pL>$N(B
 $B%A%'%C%/$r9T$J$&$K$O!"86J8$r;2>H$7$F$/$@$5$$!#(B

 $BF|K\8lLu$*$h$S%_%i!<%5%$%HMxMQ$N>\:Y$K$D$$$F$O!"J8Kv$N!V(BA. FreeBSD
 $B%;%-%e%j%F%#4+9p(B $BF|K\8lHG$K$D$$$F!W$r$4Mw$/$@$5$$!#(B


                                     [$BK]Lu<T(B: $B:4F#(B $B9-@8(B <hrs@jp.FreeBSD.org>]
--($B$3$3$+$i(B)
=============================================================================
FreeBSD-SA-03:05.xdr                                        Security Advisory
                                                          The FreeBSD Project

$B%H%T%C%/(B:       $B%j%b!<%H$+$i%5!<%S%9K832967b2DG=$J(B
                XDR $B%(%s%3!<%@(B/$B%G%3!<%@$N<eE@(B
                (remote denial-of-service in XDR encoder/decoder)

$BJ,N`(B:           core
$B%b%8%e!<%k(B:     libc
$B9pCNF|(B:         2003-03-20
$B%/%l%8%C%H(B:     Riley Hassell (eEye)
                Todd Miller <millert@OpenBSD.org>
$B1F6AHO0O(B:       4.6.2-RELEASE-p11, 4.7-RELEASE-p8, 4.8-RELEASE,
                5.0-RELEASE-p5 $B$h$jA0$N!"$9$Y$F$N%j%j!<%9(B
$B=$@5F|(B:         2003-03-20 12:59:55 UTC (RELENG_4)
                2003-03-20 13:05:04 UTC (RELENG_4_6)
                2003-03-20 13:05:27 UTC (RELENG_4_7)
                2003-03-20 13:04:46 UTC (RELENG_5_0)
FreeBSD $B$K8GM-$+(B:       NO


I.   $BGX7J(B - Background

XDR (eXternal Data Representation) $B$O(B Sun Microsystems $B$,3+H/$7$?!"(B
$B%W%i%C%H%U%)!<%`$K0MB8$7$J$$%G!<%?7?$N%(%s%3!<%I5,3J$N$R$H$D$G$9!#(B
XDR $B$O!"(BSun RPC (Remote Procedure Call) $B$J$I$N%W%m%H%3%k$K$*$$$F(B
$B9-$/;H$o$l$F$$$^$9!#(BFreeBSD $B$NI8=`(B C $B%i%$%V%i%j$K$O!"(B
Sun Microsystems $B$,G[I[$7$F$$$?%i%$%V%i%j$KM3Mh$9$k(B XDR $B%(%s%3!<%I!"(B
XDR $B%G%3!<%I%k!<%A%s$,4^$^$l$F$$$^$9!#(B


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

xdrmem XDR $B%9%H%j!<%`%*%V%8%'%/%H$O!"6-3&%A%'%C%/$r@5$7$/9T$J$C$F(B
$B$$$^$;$s!#6-3&>pJs$rJ];}$7$F$$$kFbItJQ?t$,Id9fIU$-@0?t$K$J$C$F$*$j!"(B
$B6-3&%A%'%C%/$G$O$=$NId9fIU$-@0?t$+$i%*%V%8%'%/%HD9$r0z$-;;$7$F!"(B
$B$=$N7k2L$,Ii$K$J$k$+$I$&$+$GH=CG$7$F$$$^$9!#$7$+$7%*%V%8%'%/%HD9$,(B
$B==J,Bg$-$$>l9g$O!"$3$NFbItJQ?t$K7e$"$U$l$,5/$3$j!"7k2L$,@5$K(B
$B$J$C$F$7$^$$$^$9!#(B


III. $B1F6AHO0O(B - Impact

xdrmem XDR $B%9%H%j!<%`%*%V%8%'%/%H$KBP$9$kA`:n$K$O!"%a%b%j%3%T!<$NA0$K(B
$B6-3&%A%'%C%/$,9T$J$o$l$k$b$N$,$"$j$^$9!#$3$N6-3&%A%'%C%/$N%P%0$r(B
$B0-MQ$9$k$H!"Hs>o$KBg$-$$%a%b%jHO0O$r%a%b%j%3%T!<$5$;$F%;%0%a%s%H0cH?(B
(segmentation violation) $B$rH/@8$5$;$k$3$H$,$G$-$^$9!#$7$?$,$C$F967b<T$O!"(B
xdrmem XDR $B%9%H%j!<%`%*%V%8%'%/%H$rMxMQ$9$k%5!<%S%9$KBP$7!"(B
$B0-0U$r;}$C$F:n@.$7$?%a%C%;!<%8$rAw$k$3$H$G%5!<%S%9K832967b$r(B
$B9T$J$&$3$H$,2DG=$G$9!#(B


IV.  $B2sHrJ}K!(B - Workaround

$B2sHrJ}K!$O8+$D$+$C$F$$$^$;$s!#(B


V.   $B2r7h:v(B - Solution

$B<!$N$$$:$l$+0l$D$K=>$C$F$/$@$5$$!#(B

1) $B<eE@$r;}$C$?(B FreeBSD $B%7%9%F%`$r:G?7$N(B 4-STABLE $B%V%i%s%A!"(B
   $B$b$7$/$O=$@5F|0J9_$N(B RELENG_4_7 (4.7-RELEASE-p8)$B!"(B
   RELENG_4_6 (4.6.2-RELEASE-p11)$B!"(BRELENG_5_0 (5.0-RELEASE-p5)
   $B%;%-%e%j%F%#%V%i%s%A$N$$$:$l$+$K%"%C%W%0%l!<%I$9$k!#(B

2) $B8=:_$N%7%9%F%`$K=$@5%Q%C%A$rE,MQ$9$k!#(B

$B0J2<$N=$@5%Q%C%A$O!"(BFreeBSD 4.6$B!"(BFreeBSD 4.7 $B$N3F%7%9%F%`$K(B
$BE,MQ2DG=$J$3$H$,3NG'$5$l$F$$$k$b$N$G$9!#(B

a) $B0J2<$N>l=j$+$i=$@5%Q%C%A$r%@%&%s%m!<%I$7!"(BPGP $B%f!<%F%#%j%F%#$r;H$C$F(B
   PGP $B=pL>$r3NG'$7$^$9!#(B

# fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:05/xdr-4.patch
# fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:05/xdr-4.patch.asc

$B0J2<$N=$@5%Q%C%A$O!"(BFreeBSD 5.0 $B$N%7%9%F%`$KE,MQ2DG=$J$3$H$,(B
$B3NG'$5$l$F$$$k$b$N$G$9!#(B

a) $B0J2<$N>l=j$+$i=$@5%Q%C%A$r%@%&%s%m!<%I$7!"(BPGP $B%f!<%F%#%j%F%#$r;H$C$F(B
   PGP $B=pL>$r3NG'$7$^$9!#(B

# fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:05/xdr-5.patch
# fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:05/xdr-5.patch.asc

b) root $B8"8B$G<!$N%3%^%s%I$r<B9T$7$^$9!#(B

# cd /usr/src
# patch < /path/to/patch

 ($BLuCm(B: /path/to/patch $B$NItJ,$O=$@5%Q%C%A$N%Q%9L>$KCV$-49$($F$/$@$5$$(B)

c) <URL:http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html> $B$K=q$+$l$F$$$k(B
   $B<j=g$K$7$?$,$C$F%7%9%F%`$r:F9=C[$7!"%7%9%F%`$r:F5/F0$7$^$9!#(B

$B$^$?!"%Y!<%9%7%9%F%`$K4^$^$l$F$$$J$$!"@EE*$K%j%s%/$5$l$?%P%$%J%j(B
($B$D$^$j(B Ports Collection $B$d%5!<%I%Q!<%F%#@=$N%=!<%9$+$i%3%s%Q%$%k$7$?$b$N(B)
$B$b!"$9$Y$F:F%3%s%Q%$%k$9$kI,MW$,$"$k$3$H$KCm0U$7$F$/$@$5$$!#(B

$B99?7$5$l$?%i%$%V%i%j$r;H$&$h$&!"1F6A$r<u$1$k%"%W%j%1!<%7%g%s$O(B
$B$9$Y$F:F5/F0$9$kI,MW$,$"$j$^$9!#I,?\$G$O$"$j$^$;$s$,!"%7%9%F%`$N:F5/F0$,(B
$B$*$=$i$/:G$b4JC1$JJ}K!$G$7$g$&!#(B


VI.  $B=$@5$N>\:Y(B - Correction details

FreeBSD $B$K$*$$$F:#2s=$@5$5$l$?3F%U%!%$%k$N%j%S%8%g%sHV9f$O!"0J2<$N$H$*$j$G$9!#(B

$B%V%i%s%A(B                                                         $B%j%S%8%g%s(B
  $B%Q%9L>(B
- -------------------------------------------------------------------------
RELENG_4
  src/include/rpc/xdr.h                                          1.14.2.1
  src/lib/libc/xdr/xdr_mem.c                                      1.8.2.1
RELENG_4_6
  src/UPDATING                                             1.73.2.68.2.38
  src/include/rpc/xdr.h                                         1.14.10.1
  src/lib/libc/xdr/xdr_mem.c                                     1.8.10.1
  src/sys/conf/newvers.sh                                  1.44.2.23.2.28
RELENG_4_7
  src/UPDATING                                             1.73.2.74.2.10
  src/include/rpc/xdr.h                                         1.14.12.1
  src/lib/libc/xdr/xdr_mem.c                                     1.8.12.1
  src/sys/conf/newvers.sh                                  1.44.2.26.2.10
RELENG_5_0
  src/UPDATING                                                 1.229.2.10
  src/include/rpc/xdr.h                                          1.21.2.1
  src/lib/libc/xdr/xdr_mem.c                                     1.11.2.1
  src/sys/conf/newvers.sh                                        1.48.2.6
- -------------------------------------------------------------------------


VII. $B;29M;qNA(B - References

<URL: http://www.cert.org/advisories/CA-2003-10.html >
<URL: http://www.eeye.com/html/Research/Advisories/AD20030318.html >
<URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0028 >


A.   FreeBSD $B%;%-%e%j%F%#4+9p(B $BF|K\8lHG$K$D$$$F(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$9!#2a5n$NF|K\8lHG%;%-%e%j%F%#4+9p$O(B

 http://www.FreeBSD.org/ja/security/

$B$K$^$H$a$i$l$F$$$^$9!#(B

$B$?$@$7K]Lu<T$*$h$S(B doc-jp $B$O!"$=$NFbMF$K$D$$$F$$$+$J$kJ]>Z$b(B
$B$$$?$7$^$;$s$N$G$4Cm0U$/$@$5$$!#F|K\8lLu$K$D$$$F$N$40U8+!"$4MWK>!"(B
$B$*Ld$$9g$o$;Ey$O(B doc-jp@jp.FreeBSD.org $B$^$G$*4j$$$7$^$9!#(B

$B$3$N4+9p$NCf$G>R2p$5$l$F$$$k(B WWW $B%5%$%H(B http://www.FreeBSD.org/ $B$*$h$S(B
FTP $B%5%$%H(B ftp://ftp.FreeBSD.org/ $B$K$O(B, $BF|K\$N%_%i!<%5%$%H$,B8:_$7$^$9!#(B
$B%M%C%H%o!<%/$N:.;($r4KOB$9$k$?$a!"$^$:$O%_%i!<%5%$%H$NMxMQ$r(B
$B9MN8$9$k$h$&$*4j$$$7$^$9!#(B

$BF|K\$N%_%i!<%5%$%H$rMxMQ$9$k$K$O!"(B
http://www.FreeBSD.org/ $B$r(B http://www.jp.FreeBSD.org/www.freebsd.org/ $B$K!"(B
ftp://ftp.FreeBSD.org/ $B$r(B ftp://ftp.jp.FreeBSD.org/ $B$K!"(B
$B$=$l$>$lCV$-49$($F$/$@$5$$!#(B

$BB>$NCO0h$r4^$`%_%i!<%5%$%H$K4X$9$k>\:Y$O(B

 http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/mirrors.html ($B1QJ8(B)
 http://www.FreeBSD.org/doc/ja_JP.eucJP/books/handbook/mirrors.html ($BF|K\8lLu(B)

$B$K$^$H$a$i$l$F$$$^$9!#(B
