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Subject: Re: ANNOUNCE: [FreeBSD-Announce] FreeBSD Security Advisory FreeBSD-SA-03:07.sendmail
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FreeBSD $B%;%-%e%j%F%#4+9p(B $BF|K\8lHG(B
=============================================================================
FreeBSD-SA-03:07.sendmail (2003-03-30)
 * a second sendmail header parsing buffer overflow
=============================================================================

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

  Subject: ANNOUNCE: [FreeBSD-Announce] FreeBSD Security Advisory FreeBSD-SA-03:07.sendmail
  From: FreeBSD Security Advisories <security-advisories@freebsd.org>
  Date: Sun, 30 Mar 2003 13:21:04 -0800 (PST)
  Message-Id: <200303302121.h2ULL47f023145@freefall.freebsd.org>
  X-Sequence: announce-jp 1120

 $B$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-03:07.sendmail                                   Security Advisory
                                                          The FreeBSD Project

$B%H%T%C%/(B:       sendmail $B%X%C%@2r@O$K$*$1$k$b$&$R$H$D$N%P%C%U%!%*!<%P%U%m!<LdBj(B
                (a second sendmail header parsing buffer overflow)

$BJ,N`(B:           contrib
$B%b%8%e!<%k(B:     contrib_sendmail
$B9pCNF|(B:         2003-03-30
$B%/%l%8%C%H(B:     Michal Zalewski <lcamtuf@ghettot.org>
$B1F6AHO0O(B:       4.8-RELEASE $B$H(B 5.0-RELEASE-p7 $B$h$jA0$N!"(B
                $B$9$Y$F$N%P!<%8%g%s$N(B FreeBSD $B%j%j!<%9(B
                $B=$@5F|$h$jA0$N(B FreeBSD 4-STABLE
$B=$@5F|(B:         2003-03-29 19:34:13 UTC (RELENG_4)
                2003-03-29 21:58:11 UTC (RELENG_5_0)
                2003-03-29 21:58:05 UTC (RELENG_4_7)
                2003-03-29 21:57:58 UTC (RELENG_4_6)
                2003-03-29 21:57:52 UTC (RELENG_4_5)
                2003-03-29 21:57:45 UTC (RELENG_4_4)
                2003-03-29 21:57:36 UTC (RELENG_4_3)
                2003-03-29 20:09:48 UTC (RELENG_3)
FreeBSD $B$K8GM-$+(B:       NO


I.   $BGX7J(B - Background

FreeBSD $B$G$O!"%G%U%)%k%H$N(B Mail Transfer Agent (MTA) $B$H$7$F!"(B
$BHFMQ$N%M%C%H%o!<%/4V%a!<%kG[Aw%=%U%H%&%'%"$N$R$H$D$G$"$k(B
sendmail(8) $B$r:NMQ$7$F$$$^$9!#(B


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

sendmail $B$O!"%X%C%@2r@O;~$K%P%C%U%!%*!<%P%U%m!<$r5/$3$92DG=@-$,(B
$B$"$k$3$H$,H=L@$7$^$7$?!#$3$N%*!<%P%U%m!<$O!"(BC $B8@8l$N7?JQ49$K(B
$B4XO"$7$?%W%m%0%i%`$N%P%0$,860x$GH/@8$9$k$b$N$G$9!#(B

$B=EMW(B: $B1F6AHO0O$OHs>o$K;w$F$$$^$9$,!"$3$l$O(B `FreeBSD-SA-03:04.sendmail' $B$G(B
      $B@bL@$5$l$F$$$kLdBj$H$O!"JL$NLdBj$G$9!#(B


III. $B1F6AHO0O(B - Impact

$B%j%b!<%H$N967b<T$O!"FC<l$J:Y9)$r;\$7$?%a%C%;!<%8$r:n@.$9$k$3$H$G!"(B
sendmail $B$r5/F0$7$?%f!<%6(B ($BDL>o$O(B root) $B$N8"8B$G!"(Bsendmail $B$K(B
$BG$0U$N%3!<%I$r<B9T$5$;$k$3$H$,$G$-$k2DG=@-$,$"$j$^$9!#(B
$B$3$N0-0U$"$k%a%C%;!<%8$O!":G=i$K%a!<%k$r<u$1<h$k(B sendmail MTA$B!"(B
$B%j%l!<$r9T$J$&(B sendmail MTA$B!"(Bsendmail $B$NG[Aw%W%m%;%9$J$I$K$h$C$F(B
$BG[Aw=hM}$,9T$J$o$l$^$9$,!"$=$N$h$&$J(B sendmail $B$,4XM?$9$k!"(B
$B$9$Y$F$N2aDx$G$3$N%;%-%e%j%F%#>e$N<eE@$,0-MQ$5$l$k4m81@-$,$"$j$^$9!#(B
$B$3$N<eE@$r0-MQ$9$k$3$H$O$+$J$j:$Fq$G$9$,!"<B8=$O2DG=$G$"$k$H9M$($i$l$F$$$^$9!#(B


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

sendmail $B$rMxMQ$7$J$$!"$H$$$&0J30$K2sHrJ}K!$O$"$j$^$;$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(B 4,8-RELEASE $B$+:G?7$N(B 4-STABLE$B!"(B
   $B$b$7$/$O=$@5F|0J9_$N(B RELENG_5_0 (5.0-RELEASE-p7)$B!"(B
   RELENG_4_7 (4.7-RELEASE-p10)$B!"(BRELENG_4_6 (4.6.2-RELEASE-p13)
   $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

$B0J2<$N=$@5%Q%C%A$O!"(BFreeBSD 5.0$B!"(BFreeBSD 4.7$B!"(BFreeBSD 4.6 $B$N(B
$B3F%7%9%F%`$KE,MQ2DG=$J$3$H$,3NG'$5$l$F$$$^$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>$r8!>Z$7$^$9!#(B

ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:07/sendmail.patch
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:07/sendmail.patch.asc

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

# cd /usr/src
# patch < /path/to/patch
# cd /usr/src/lib/libsm
# make obj && make depend && make
# cd /usr/src/lib/libsmutil
# make obj && make depend && make
# cd /usr/src/usr.sbin/sendmail
# make obj && make depend && make && make install

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

c) sendmail $B$r:F5/F0$7$^$9!#(Broot $B$G0J2<$N%3%^%s%I$r<B9T$7$F$/$@$5$$!#(B

# /bin/sh /etc/rc.sendmail restart

3) i386 $B%7%9%F%`$K8B$j!"=$@5%Q%C%A$rE,MQ$7$F9=C[$7$?(B sendmail $B%P%$%J%j$,(B
   $BDs6!$5$l$F$$$^$9!#1?MQ$7$F$$$k(B FreeBSD $B$N%P!<%8%g%s!"(B
   STARTTLS $BBP1~$NM-L5$K$h$j!"@5$7$$%P%$%J%j$rA*Br$7$F$/$@$5$$!#(B
   $B$J$*!"(BSTARTTLS $B$KBP1~$7$?%P%$%J%j$rMxMQ$9$k>l9g$O!"(B
   crypto $BG[I[J*$,%$%s%9%H!<%k$5$l$F$$$J$1$l$P$J$j$^$;$s!#(B

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

ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:07/sendmail-4.6-i386-crypto.bin.gz
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:07/sendmail-4.6-i386-crypto.bin.gz.asc

ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:07/sendmail-4.6-i386-nocrypto.bin.gz
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:07/sendmail-4.6-i386-nocrypto.bin.gz.asc

ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:07/sendmail-4.7-i386-crypto.bin.gz
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:07/sendmail-4.7-i386-crypto.bin.gz.asc

ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:07/sendmail-4.7-i386-nocrypto.bin.gz
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:07/sendmail-4.7-i386-nocrypto.bin.gz.asc

ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:07/sendmail-5.0-i386-crypto.bin.gz
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:07/sendmail-5.0-i386-crypto.bin.gz.asc

ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:07/sendmail-5.0-i386-nocrypto.bin.gz
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-03:07/sendmail-5.0-i386-nocrypto.bin.gz.asc

b) $B%P%$%J%j$r%$%s%9%H!<%k$7$^$9!#0J2<$N%3%^%s%I$r(B root $B8"8B$G<B9T$7$F$/$@$5$$!#(B
   $B<!$K<($9$N$O!"(BFreeBSD 4.7 $B%7%9%F%`MQ$N(B crypto $BBP1~%P%$%J%j$r(B
   $BMxMQ$7$?>l9g$NNc$G$9!#$J$*!"(BBINARYGZ $B$K$O!"%9%F%C%W(B (a) $B$G(B
   $B%@%&%s%m!<%I$7$?%U%!%$%kL>$rBeF~$7$F$/$@$5$$!#(B

# BINARYGZ=/path/to/sendmail-4.7-i386-crypto.bin.gz
# gunzip ${BINARYGZ}
# install -s -o root -g smmsp -m 2555 ${BINARYGZ%.gz} /usr/libexec/sendmail/sendmail

c) sendmail $B$r:F5/F0$7$^$9!#(Broot $B8"8B$G0J2<$N%3%^%s%I$r<B9T$7$F$/$@$5$$!#(B

# /bin/sh /etc/rc.sendmail restart


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/contrib/sendmail/FREEBSD-upgrade                           1.1.2.16
  src/contrib/sendmail/RELEASE_NOTES                         1.1.1.3.2.15
  src/contrib/sendmail/cf/README                             1.1.1.3.2.15
  src/contrib/sendmail/cf/cf/submit.cf                        1.1.1.1.2.8
  src/contrib/sendmail/cf/m4/cfhead.m4                            1.3.6.8
  src/contrib/sendmail/cf/m4/proto.m4                        1.1.1.4.2.13
  src/contrib/sendmail/cf/m4/version.m4                      1.1.1.3.2.15
  src/contrib/sendmail/cf/mailer/usenet.m4                    1.1.1.2.6.3
  src/contrib/sendmail/contrib/buildvirtuser                  1.1.1.1.2.5
  src/contrib/sendmail/doc/op/op.me                          1.1.1.3.2.15
  src/contrib/sendmail/editmap/editmap.8                      1.1.1.1.2.2
  src/contrib/sendmail/include/sm/bdb.h                       1.1.1.1.2.2
  src/contrib/sendmail/include/sm/conf.h                      1.1.1.1.2.7
  src/contrib/sendmail/libmilter/docs/api.html                1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/design.html             1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/index.html              1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/installation.html       1.1.1.1.2.3
  src/contrib/sendmail/libmilter/docs/other.html              1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/overview.html           1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/sample.html             1.1.1.1.2.3
  src/contrib/sendmail/libmilter/docs/smfi_addheader.html     1.1.1.1.2.3
  src/contrib/sendmail/libmilter/docs/smfi_addrcpt.html       1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/smfi_chgheader.html     1.1.1.1.2.3
  src/contrib/sendmail/libmilter/docs/smfi_delrcpt.html       1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/smfi_getpriv.html       1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/smfi_getsymval.html     1.1.1.1.2.3
  src/contrib/sendmail/libmilter/docs/smfi_main.html          1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/smfi_register.html      1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/smfi_replacebody.html   1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/smfi_setbacklog.html    1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/smfi_setconn.html       1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/smfi_setpriv.html       1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/smfi_setreply.html      1.1.1.1.2.4
  src/contrib/sendmail/libmilter/docs/smfi_settimeout.html    1.1.1.1.2.3
  src/contrib/sendmail/libmilter/docs/xxfi_abort.html         1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/xxfi_body.html          1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/xxfi_close.html         1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/xxfi_connect.html       1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/xxfi_envfrom.html       1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/xxfi_envrcpt.html       1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/xxfi_eoh.html           1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/xxfi_eom.html           1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/xxfi_header.html        1.1.1.1.2.2
  src/contrib/sendmail/libmilter/docs/xxfi_helo.html          1.1.1.1.2.2
  src/contrib/sendmail/libsm/clock.c                          1.1.1.1.2.5
  src/contrib/sendmail/libsm/config.c                         1.1.1.1.2.3
  src/contrib/sendmail/mail.local/mail.local.c                   1.6.6.14
  src/contrib/sendmail/src/README                            1.1.1.3.2.14
  src/contrib/sendmail/src/collect.c                         1.1.1.4.2.12
  src/contrib/sendmail/src/conf.c                                1.5.2.14
  src/contrib/sendmail/src/deliver.c                         1.1.1.3.2.14
  src/contrib/sendmail/src/headers.c                             1.4.2.10
  src/contrib/sendmail/src/main.c                            1.1.1.3.2.15
  src/contrib/sendmail/src/milter.c                          1.1.1.1.2.16
  src/contrib/sendmail/src/parseaddr.c                       1.1.1.2.6.13
  src/contrib/sendmail/src/queue.c                           1.1.1.3.2.14
  src/contrib/sendmail/src/readcf.c                          1.1.1.4.2.14
  src/contrib/sendmail/src/sendmail.h                        1.1.1.4.2.15
  src/contrib/sendmail/src/sm_resolve.c                       1.1.1.1.2.3
  src/contrib/sendmail/src/srvrsmtp.c                        1.1.1.2.6.14
  src/contrib/sendmail/src/tls.c                              1.1.1.1.2.5
  src/contrib/sendmail/src/usersmtp.c                        1.1.1.3.2.12
  src/contrib/sendmail/src/version.c                         1.1.1.3.2.15
RELENG_5_0
  src/UPDATING                                                 1.229.2.13
  src/contrib/sendmail/src/conf.c                                1.18.2.1
  src/contrib/sendmail/src/parseaddr.c                       1.1.1.14.2.2
  src/contrib/sendmail/src/version.c                         1.1.1.16.2.1
  src/sys/conf/newvers.sh                                        1.48.2.8
RELENG_4_7
  src/UPDATING                                             1.73.2.74.2.13
  src/contrib/sendmail/src/conf.c                            1.5.2.11.2.1
  src/contrib/sendmail/src/parseaddr.c                   1.1.1.2.6.10.2.2
  src/contrib/sendmail/src/version.c                     1.1.1.3.2.12.2.1
  src/sys/conf/newvers.sh                                  1.44.2.26.2.12
RELENG_4_6
  src/UPDATING                                             1.73.2.68.2.41
  src/contrib/sendmail/src/conf.c                             1.5.2.8.2.1
  src/contrib/sendmail/src/parseaddr.c                    1.1.1.2.6.8.2.2
  src/contrib/sendmail/src/version.c                      1.1.1.3.2.9.2.1
  src/sys/conf/newvers.sh                                  1.44.2.23.2.30
RELENG_4_5
  src/UPDATING                                             1.73.2.50.2.43
  src/contrib/sendmail/src/conf.c                             1.5.2.6.4.1
  src/contrib/sendmail/src/parseaddr.c                    1.1.1.2.6.6.4.2
  src/contrib/sendmail/src/version.c                      1.1.1.3.2.7.4.1
  src/sys/conf/newvers.sh                                  1.44.2.20.2.27
RELENG_4_4
  src/UPDATING                                             1.73.2.43.2.43
  src/contrib/sendmail/src/conf.c                             1.5.2.6.2.1
  src/contrib/sendmail/src/parseaddr.c                    1.1.1.2.6.6.2.2
  src/contrib/sendmail/src/version.c                      1.1.1.3.2.7.2.1
  src/sys/conf/newvers.sh                                  1.44.2.17.2.34
RELENG_4_3
  src/UPDATING                                             1.73.2.28.2.31
  src/contrib/sendmail/src/conf.c                             1.5.2.4.2.1
  src/contrib/sendmail/src/parseaddr.c                    1.1.1.2.6.4.2.2
  src/contrib/sendmail/src/version.c                      1.1.1.3.2.4.2.1
  src/sys/conf/newvers.sh                                  1.44.2.14.2.21
RELENG_3
  src/contrib/sendmail/src/conf.c                                 1.3.2.3
  src/contrib/sendmail/src/parseaddr.c                        1.1.1.2.2.2
  src/contrib/sendmail/src/version.c                          1.1.1.2.2.2
- -------------------------------------------------------------------------


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

<URL: http://www.cert.org/advisories/CA-2003-12.html >
<URL: http://www.sendmail.com/security/ >
<URL: http://lists.netsys.com/pipermail/full-disclosure/2003-March/008973.html >
<URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0161 >


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
