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From: Hideyuki KURASHINA <rushani@jp.FreeBSD.org>
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Subject: Re: ANNOUNCE: [FreeBSD-Announce] FreeBSD Security Advisory FreeBSD-SA-03:10.ibcs2
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FreeBSD $B%;%-%e%j%F%#4+9p(B $BF|K\8lHG(B
=============================================================================
FreeBSD-SA-03:10.ibcs2 (2003-08-10)
 * Kernel memory disclosure via ibcs2
=============================================================================

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

  Subject: ANNOUNCE: [FreeBSD-Announce] FreeBSD Security Advisory FreeBSD-SA-03:10.ibcs2
  From: FreeBSD Security Advisories <security-advisories@freebsd.org>
  Date: Sun, 10 Aug 2003 19:57:13 -0700 (PDT)
  Message-Id: <200308110257.h7B2vDxk061311@freefall.freebsd.org>
  X-Sequence: announce-jp 1160

 $B$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$H$r8!>Z$9$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


                                 [$BK]Lu<T(B: $BARIJ(B $B1Q9T(B <rushani@jp.FreeBSD.org>]
--($B$3$3$+$i(B)
=============================================================================
FreeBSD-SA-03:10.ibcs2                                      Security Advisory
                                                          The FreeBSD Project

$B%H%T%C%/(B:       ibcs2 $B$r7PM3$7$?%+!<%M%k%a%b%j$N0U?^$7$J$$8x3+(B
                (Kernel memory disclosure via ibcs2)

$BJ,N`(B:           core
$B%b%8%e!<%k(B:     sys
$B9pCNF|(B:         2003-08-10
$B%/%l%8%C%H(B:     David Rhodus <drhodus@catpa.com>
$B1F6AHO0O(B:       5.1-RELEASE-p1 $B$*$h$S(B 4.8-RELEASE-p2 $B$r4^$`!"(B
                $B$9$Y$F$N(B FreeBSD $B%j%j!<%9(B
$B=$@5F|(B:         2003-08-10 23:30:18 UTC (RELENG_4)
                2003-08-10 23:28:16 UTC (RELENG_5_1)
                2003-08-10 23:29:10 UTC (RELENG_5_0)
                2003-08-10 23:31:11 UTC (RELENG_4_8)
                2003-08-10 23:31:51 UTC (RELENG_4_7)
                2003-08-10 23:32:22 UTC (RELENG_4_6)
                2003-08-10 23:32:44 UTC (RELENG_4_5)
                2003-08-10 23:33:18 UTC (RELENG_4_4)
                2003-08-10 23:33:50 UTC (RELENG_4_3)
                2003-08-10 23:35:21 UTC (RELENG_3)
FreeBSD $B8GM-$+(B: YES

$B>e5-$N3F9`L\!"%;%-%e%j%F%#%V%i%s%A!"2<5-$N3F@a$K4X$9$k>\:Y$J$I!"(B
FreeBSD $B%;%-%e%j%F%#4+9p$K$D$$$F$N0lHLE*$J>pJs$O!"(B
<URL:http://www.freebsd.org/security/> $B$r$4Mw$/$@$5$$!#(B

I.   $BGX7J(B - Background

FreeBSD $B$O!"(BIntel Binary Compatibility Specification 2 (iBCS2) $B$K=`5r$7$?(B
$B%W%m%0%i%`$rF0:n$5$;$k$?$a$K%7%9%F%`%3!<%k$NJQ495!G=$rDs6!$9$k(B
$B%+!<%M%k%*%W%7%g%s(B (IBCS2) $B$*$h$S!"%+!<%M%k%m!<%@%V%k%b%8%e!<%k(B
(ibcs2.ko) $B$,4^$^$l$F$$$^$9!#(B

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

statfs(2) $B$N(B iBCS2 $B%7%9%F%`%3!<%kJQ49=hM}$K$*$$$F!"%+!<%M%k%G!<%?9=B$$r(B
$B%f!<%6%i%s%I$K%3%T!<$9$k;~$K!"%f!<%6$,6!5k$7$?%G!<%?D9%Q%i%a!<%?$r(B
$B8m$C$F;HMQ$7$F$$$^$7$?!#$3$N%G!<%?D9%Q%i%a!<%?$,I,MW$JD9$5$h$j$b(B
$BBg$-$+$C$?>l9g!"%f!<%6$+$i(B statfs(2) $B$K4X78$9$k%G!<%?9=B$0J30$N(B
$BBg$-$+$C$?>l9g!"%f!<%6$K(B statfs(2) $B$K4X78$9$k%G!<%?9=B$0J30$N(B
$B%+!<%M%k%a%b%j$b0l=o$KJV$7$F$7$^$$$^$9!#(B

III. $B1F6AHO0O(B - Impact

iBCS2 $B%5%]!<%H$,M-8z$K$J$C$F$$$k$H!"0-0U$N$"$k%f!<%6$,G$0U$NBg$-$5$N(B
$B%G!<%?D9%Q%i%a!<%?$r;H$C$F(B iBCS2 $BHG$N(B statfs(2) $B$r8F$S=P$7!"(B($BLuCm(B: $BK\MhI,MW$H(B
$B$9$k$h$j$b(B) $BBg$-$J%5%$%:$N%+!<%M%k%a%b%j$rMW5a$9$k$3$H$,$G$-$^$9!#(B
$B$3$N$h$&$J%a%b%j$K$O!"%U%!%$%k%-%c%C%7%e$dC<Kv%P%C%U%!$H$$$C$?(B
$B%;%-%e%j%F%#>e=EMW$J>pJs$,4^$^$l$F$$$k2DG=@-$,$"$j$^$9!#$3$N>pJs$O(B
$BD>@\0-MQ2DG=$+$b$7$l$^$;$s$7!"9b$$8"8B$rIT@5$KF@$k$?$a$K(B
$B0-MQ$5$l$k$+$b$7$l$^$;$s(B ($B$?$H$($P!"C<Kv%P%C%U%!$K$O%f!<%6$,(B
$BF~NO$7$?%Q%9%o!<%I$,4^$^$l$F$$$k$+$b$7$l$^$;$s(B)$B!#(B

iBCS2 $B%5%]!<%H$,M-8z$K$J$k$N$O!"%7%9%F%`$N4IM}<T$,%+!<%M%k%3%s%U%#%0(B
$B%U%!%$%k$KL@<(E*$K(B option IBCS2 $B$rDI2C$7$F9=C[$7$?%+!<%M%k$rMxMQ$7$F$$$k>l9g!"(B
kldload(8) $B$rMxMQ$7$FF0E*$K(B ibcs2.ko $B%b%8%e!<%k$rFI$_9~$s$@>l9g!"$b$7$/$O(B
rc.conf(5) $B$G(B ibcs2_enable $B$rMxMQ$9$k$h$&$K@_Dj$7$?>l9g$N$_$G$9!#(B

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

iBCS2 $B%5%]!<%H$,M-8z$K$J$C$F$$$l$P!"$=$l$rL58z$K$7$^$9!#(B

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

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

1) $B<eE@$r;}$C$?(B FreeBSD $B%7%9%F%`$r!":G?7$N(B 4.8-STABLE $B$+!"(B
   $B$b$7$/$O=$@5F|0J9_$N(B RELENG_5_1 (5.1-RELEASE-p2), RELENG_4_8
   (4.8-RELEASE-p3), RELENG_4_7 (4.7-RELEASE-p13)
   $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

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>$r8!>Z$7$^$9!#$3$N=$@5%Q%C%A$O!"(BFreeBSD 5.x$B!"(B4.x$B!"$*$h$S(B
   3.x $B$N$9$Y$F$N%j%j!<%9$KE,MQ2DG=$J$3$H$,3NG'$5$l$F$$$k$b$N$G$9!#(B

# fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:10/ibcs2.patch
# fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:10/ibcs2.patch.asc

b) $B=$@5%Q%C%A$rE,MQ$7$^$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/kernelconfig.html>
   $B$K5-:\$5$l$F$$$k<j=g$G%+!<%M%k$r:F9=C[$7!"%7%9%F%`$r:F5/F0$7$^$9!#(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
- -------------------------------------------------------------------------
src/UPDATING
  RELENG_5_1                                                    1.251.2.3
  RELENG_5_0                                                   1.229.2.16
  RELENG_4_8                                                1.73.2.80.2.5
  RELENG_4_7                                               1.73.2.74.2.16
  RELENG_4_6                                               1.73.2.68.2.44
  RELENG_4_5                                               1.73.2.50.2.46
  RELENG_4_4                                               1.73.2.43.2.47
  RELENG_4_3                                               1.73.2.28.2.34
src/sys/conf/newvers.sh
  RELENG_5_1                                                     1.50.2.4
  RELENG_5_0                                                    1.48.2.11
  RELENG_4_8                                                1.44.2.29.2.4
  RELENG_4_7                                               1.44.2.26.2.15
  RELENG_4_6                                               1.44.2.23.2.33
  RELENG_4_5                                               1.44.2.20.2.30
  RELENG_4_4                                               1.44.2.17.2.38
  RELENG_4_3                                               1.44.2.14.2.24
src/sys/i386/ibcs2/ibcs2_stat.c
  RELENG_4                                                       1.10.2.1
  RELENG_5_1                                                     1.21.2.1
  RELENG_5_0                                                     1.16.2.2
  RELENG_4_8                                                    1.10.14.1
  RELENG_4_7                                                    1.10.12.1
  RELENG_4_6                                                    1.10.10.1
  RELENG_4_5                                                     1.10.8.1
  RELENG_4_4                                                     1.10.6.1
  RELENG_4_3                                                     1.10.4.1
  RELENG_3                                                        1.8.2.1
- -------------------------------------------------------------------------

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
