From owner-announce-jp@jp.freebsd.org  Tue Feb 20 18:58:19 2001
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Date: Mon, 19 Feb 2001 03:24:21 +0900 (JST)
Message-Id: <20010219.032421.88698811.hrs@eos.ocn.ne.jp>
To: announce-jp@jp.FreeBSD.org
From: Hiroki Sato <hrs@eos.ocn.ne.jp>
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Subject: Re: ANNOUNCE: FreeBSD Security Advisory: FreeBSD-SA-01:12.periodic [REVISED]
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FreeBSD $B%;%-%e%j%F%#4+9p(B $BF|K\8lHG(B
=============================================================================
FreeBSD-SA-01:12 (2001-01-29)
 * periodic uses insecure temporary files [REVISED]
=============================================================================

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

  Subject: ANNOUNCE: FreeBSD Security Advisory: FreeBSD-SA-01:12.periodic [REVISED]
  From: FreeBSD Security Advisories <security-advisories@freebsd.org>
  Date: Mon, 29 Jan 2001 13:06:12 -0800 (PST)
  Message-Id: <20010129210612.30FE737B402@hub.freebsd.org>
  X-Sequence: announce-jp 677

 $B$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. 
 $B=$@5%Q%C%AEy$NFbMF$,2~cb$5$l$F$$$J$$$3$H$r3NG'$9$k$?$a$K(B PGP $B=pL>$N(B
 $B%A%'%C%/$r9T$J$&$K$O(B, $B86J8$r;2>H$7$F$/$@$5$$(B. 

 $BF|K\8lLu$*$h$S(B, $B%_%i!<%5%$%HMxMQ$N>\:Y$K$D$$$F$O(B, $BJ8Kv$N!V(BA. FreeBSD
 $B%;%-%e%j%F%#4+9p(B $BF|K\8lHG$K$D$$$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-01:12                                           Security Advisory
                                                                FreeBSD, Inc.

$B%H%T%C%/(B:	periodic uses insecure temporary files [REVISED]

$BJ,N`(B:		core
$B%b%8%e!<%k(B:	periodic
$B9pCNF|(B:		2001-01-29
$B2~D{F|(B:		2001-01-29
$B%/%l%8%C%H(B:	David Lary <dlary@secureworks.net>
$B1F6AHO0O(B:	2000-09-20 $B0J9_$N(B FreeBSD 4.1-STABLE,
                4.1.1-RELEASE,
                $B=$@5F|0JA0$N(B 4.1.1-STABLE
		FreeBSD 3.x $B$K$O1F6A$J$7(B
$B=$@5F|(B:		2000-11-11
FreeBSD $B$K8GM-$+(B:	Yes


0.   $B2~D{MzNr(B - Revision History

v1.0  2001-01-29  $B=iHG8x3+(B
v1.1  2001-01-29  $B85$H$J$C$?LdBjE@$NJs9p<T$N%/%l%8%C%H$r=$@5(B


I.   $BGX7J(B - Background

periodic $B$O%7%9%F%`$NDj4|E*$JJ]<i:n6H$r<B9T$9$k$?$a$N(B
$B%W%m%0%i%`$G$9(B.


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

periodic $B%W%m%0%i%`$O(B, $B%7%9%F%`$N0l;~%G%#%l%/%H%j$K(B
$B:n@.$5$l$k%U%!%$%k$H$7$F(B, $B%;%-%e%j%F%#$r9MN8$7$J$$%U%!%$%kL>$N(B
$B0l;~%U%!%$%k$r;H$$$^$9(B.  $B$=$N$?$a(B periodic $B$K$O(B,
$B0-0U$r;}$C$?%m!<%+%k%f!<%6$,%7%9%F%`>e$NG$0U$N%U%!%$%k$r(B
$BGK2u$9$k$3$H$,$G$-$k$H$$$&%;%-%e%j%F%#>e$N<eE@$,B8:_$7$^$9(B.

$B%7%9%F%`$NI8=`@_Dj$G$O(B, periodic $B$O0lF|$K0l2s(B, $B0l=54V$K0l2s(B,
$B0l%+7n$K0l2s(B, $B$=$l$>$lDj4|E*$JJ]<i:n6H$N<B9T$N$?$a$K(B cron $B$K(B
$B$h$C$F8F$S=P$5$l$^$9(B.  $B$3$l$i$NJ]<i:n6H$r9T$J$&%9%/%j%W%H$O(B
root $B8"8B$G<B9T$5$l$k$?$a(B, $B967b<T$O%7%9%F%`>e$NG$0U$N%U%!%$%k$r(B
$BGK2u$G$-$k2DG=@-$,$"$j$^$9(B.

2000-09-20 $B0J9_$N(B FreeBSD 4.1-STABLE $B$*$h$S(B,
$B=$@5F|0JA0$N(B 4.1.1-STABLE $B$,(B, $B$3$NLdBj$N1F6A$r<u$1$^$9(B.
FreeBSD 4.2-RELEASE $B$N8x3+A0$K(B, $B$3$NLdBj$O=$@5$5$l$^$7$?(B.


III. $B1F6AHO0O(B - Impact

$B0-0U$r;}$C$?%m!<%+%k%f!<%6$O(B, $B%7%9%F%`>e$NG$0U$N%U%!%$%k$r(B
$BGK2u$9$k$3$H$,2DG=$G$9(B.


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

$B?.Mj$G$-$J$$%^%k%A%f!<%64D6-$K$*$1$k(B periodic $B$N<B9T$r$r6X;_$7$^$9(B.

/etc/crontab $B$K$"$k(B periodic $B$N%(%s%H%j$r%3%a%s%H%"%&%H$9$k$+:o=|$7$F(B,
$BI8=`$G@_Dj$5$l$F$$$kDj4|E*$J%7%9%F%`J]<i%9%/%j%W%H$N<B9T$r(B
$BL58z$K$7$F$/$@$5$$(B.


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

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

1) $B<eE@$r;}$C$?(B FreeBSD $B%7%9%F%`$r=$@5F|0J9_$N(B 4.1.1-STABLE $B$K(B
$B%"%C%W%0%l!<%I$7$^$9(B.

2) $B=$@5F|0JA0$N(B FreeBSD 4.x $B%7%9%F%`$N>l9g(B:

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

ftp://ftp.freebsd.org/pub/FreeBSD/CERT/patches/SA-01:12/periodic.patch
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/patches/SA-01:12/periodic.patch.asc

$B$=$7$F(B root $B8"8B$G0J2<$N%3%^%s%I$r<B9T$7$F$/$@$5$$(B.

# cd /usr/src/usr.sbin/periodic
# patch -p < /path/to/patch
# make depend && make all install


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$9(B.  $B2a5n$NF|K\8lHG%;%-%e%j%F%#4+9p$O(B

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

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

$B$?$@$7(B, $BK]Lu<T$*$h$S(B doc-jp $B$O(B, $B$=$NFbMF$K$D$$$F$$$+$J$kJ]>Z$b(B
$B$$$?$7$^$;$s$N$G$4Cm0U$/$@$5$$(B.  $BF|K\8lLu$K$D$$$F$N$40U8+(B, $B$4MWK>(B,
$B$*Ld$$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$$$k(B WWW $B%5%$%H(B http://www.FreeBSD.org/ $B$*$h$S(B
FTP $B%5%$%H(B ftp://ftp.FreeBSD.org/ $B$K$O(B, $BF|K\$N%_%i!<%5%$%H$,B8:_$7$^$9(B.
$B%M%C%H%o!<%/$N:.;($r4KOB$9$k$?$a(B, $B$^$:$O%_%i!<%5%$%H$NMxMQ$r(B
$B9MN8$9$k$h$&$*4j$$$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$r4^$`(B, $B%_%i!<%5%$%H$K4X$9$k>\:Y$O(B,

 http://www.FreeBSD.org/handbook/mirror.html ($B1QJ8(B)
 http://www.FreeBSD.org/ja/handbook/mirror.html ($BF|K\8lLu(B)

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

