Objet: Vulnérabilité dans la bibliothèque glibc sous Unix

Risque

Accès root en local grâce à un débordement de pile.

Systèmes affectés

Systèmes Unix basés sur la glibc.

Résumé

La bibliothèque glibc permet à un utilisateur local d'exécuter du code arbitraire avec les privilèges de root.

Description

Un utilisateur mal intentionné peut, à l'aide de débordements de piles dans les programmes ayant le bit suid activé, obtenir des droits qu'il n'a pas (en général root), en faisant appel à une faille dans la bibliothèque glibc. Ces programmes sont entre autres :

• /bin/su
• /bin/mount
• /bin/umount
• /usr/bin/
• /usr/bin/lpq
• /usr/bin/passwd
• /usr/bin/at
• /usr/bin/suidperl
• /usr/sbin/usernetcl
• /usr/sbin/userhelper

Ces utilitaires sont pour la plupart nécessaires aux fonctionnement du système.

Solution

Appliquer les correctifs obtenus par les adresses suivantes :

• Debian :

  • http://security.debian.org/dists/stable/updates/main/source/glibc_2.1.3-13.diff.gz
    

  • http://security.debian.org/dists/stable/updates/main/source/glibc_2.1.3-13.dsc
    

  • http://security.debian.org/dists/stable/updates/main/source/glibc_2.1.3.orig.tar.gz
    

  • http://security.debian.org/dists/stable/updates/main/binary-all/glibc-doc_2.1.3-13_all.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-all/i18ndata_2.1.3-13_all.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-alpha/libc6.1-dbg_2.1.3-13_alpha.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-alpha/libc6.1-dev_2.1.3-13_alpha.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-alpha/libc6.1-pic_2.1.3-13_alpha.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-alpha/libc6.1-prof_2.1.3-13_alpha.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-alpha/libc6.1_2.1.3-13_alpha.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-alpha/libnss1-compat_2.1.3-13_alpha.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-alpha/locales_2.1.3-13_alpha.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-alpha/nscd_2.1.3-13_alpha.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-arm/libc6-dbg_2.1.3-13_arm.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-arm/libc6-dev_2.1.3-13_arm.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-arm/libc6-pic_2.1.3-13_arm.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-arm/libc6-prof_2.1.3-13_arm.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-arm/libc6_2.1.3-13_arm.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-arm/locales_2.1.3-13_arm.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-arm/nscd_2.1.3-13_arm.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-i386/libc6-dbg_2.1.3-13_i386.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-i386/libc6-dev_2.1.3-13_i386.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-i386/libc6-pic_2.1.3-13_i386.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-i386/libc6-prof_2.1.3-13_i386.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-i386/libc6_2.1.3-13_i386.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-i386/libnss1-compat_2.1.3-13_i386.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-i386/locales_2.1.3-13_i386.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-i386/nscd_2.1.3-13_i386.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-powerpc/libc6-dbg_2.1.3-13_powerpc.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-powerpc/libc6-dev_2.1.3-13_powerpc.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-powerpc/libc6-pic_2.1.3-13_powerpc.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-powerpc/libc6-prof_2.1.3-13_powerpc.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-powerpc/libc6_2.1.3-13_powerpc.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-powerpc/locales_2.1.3-13_powerpc.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-powerpc/nscd_2.1.3-13_powerpc.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-sparc/libc6-dbg_2.1.3-13_sparc.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-sparc/libc6-dev_2.1.3-13_sparc.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-sparc/libc6-pic_2.1.3-13_sparc.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-sparc/libc6-prof_2.1.3-13_sparc.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-sparc/libc6_2.1.3-13_sparc.deb:
    

  • http://security.debian.org/dists/stable/updates/main/binary-sparc/locales_2.1.3-13_sparc.deb
    

  • http://security.debian.org/dists/stable/updates/main/binary-sparc/nscd_2.1.3-13_sparc.deb
    

  • http://security.debian.org/dists/slink/updates/source/glibc_2.0.7.19981211-6.3.diff.gz
    

  • http://security.debian.org/dists/slink/updates/source/glibc_2.0.7.19981211-6.3.dsc
    

  • http://security.debian.org/dists/slink/updates/source/glibc_2.0.7.19981211.orig.tar.gz
    

  • http://security.debian.org/dists/slink/updates/binary-i386/libc6-dbg_2.0.7.19981211-6.3_i386.deb
    

  • http://security.debian.org/dists/slink/updates/binary-i386/libc6-dev_2.0.7.19981211-6.3_i386.deb
    

  • http://security.debian.org/dists/slink/updates/binary-i386/libc6-pic_2.0.7.19981211-6.3_i386.deb
    

  • http://security.debian.org/dists/slink/updates/binary-i386/libc6_2.0.7.19981211-6.3_i386.deb
    

  • http://security.debian.org/dists/slink/updates/binary-i386/locales_2.0.7.19981211-6.3_i386.deb
    

  • http://security.debian.org/dists/slink/updates/binary-i386/timezones_2.0.7.19981211-6.3_i386.deb
    

• Conectiva :

  • ftp://atualizacoes.conectiva.com.br/4.0/SRPMS/glibc-2.1.2-14cl.src.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.0/i386/glibc-2.1.2-14cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.0/i386/glibc-devel-2.1.2-14cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.0/i386/glibc-profile-2.1.2-14cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.0/i386/nscd-2.1.2-14cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.0es/SRPMS/glibc-2.1.2-14cl.src.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.0es/i386/glibc-2.1.2-14cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.0es/i386/glibc-devel-2.1.2-14cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.0es/i386/glibc-profile-2.1.2-14cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.0es/i386/nscd-2.1.2-14cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.1/SRPMS/glibc-2.1.2-14cl.src.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.1/i386/glibc-2.1.2-14cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.1/i386/glibc-devel-2.1.2-14cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.1/i386/glibc-profile-2.1.2-14cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.1/i386/nscd-2.1.2-14cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.2/SRPMS/glibc-2.1.2-14cl.src.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.2/i386/glibc-2.1.2-14cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.2/i386/glibc-devel-2.1.2-14cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.2/i386/glibc-profile-2.1.2-14cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/4.2/i386/nscd-2.1.2-14cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/5.0/SRPMS/glibc-2.1.3-10cl.src.rpm
    

  • ftp://atualizacoes.conectiva.com.br/5.0/i386/glibc-2.1.3-10cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/5.0/i386/glibc-devel-2.1.3-10cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/5.0/i386/glibc-profile-2.1.3-10cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/5.0/i386/nscd-2.1.3-10cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/5.1/SRPMS/glibc-2.1.3-10cl.src.rpm
    

  • ftp://atualizacoes.conectiva.com.br/5.1/i386/glibc-2.1.3-10cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/5.1/i386/glibc-devel-2.1.3-10cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/5.1/i386/glibc-profile-2.1.3-10cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/5.1/i386/nscd-2.1.3-10cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/SRPMS/glibc-2.1.3-10cl.src.rpm
    

  • ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/glibc-2.1.3-10cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/glibc-devel-2.1.3-10cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/glibc-profile-2.1.3-10cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/nscd-2.1.3-10cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/SRPMS/glibc-2.1.3-10cl.src.rpm
    

  • ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/glibc-2.1.3-10cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/glibc-devel-2.1.3-10cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/glibc-profile-2.1.3-10cl.i386.rpm
    

  • ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/nscd-2.1.3-10cl.i386.rpm
    

• Caldera :
  • OpenLinux Desktop 2.3 :

    • ftp://ftp.calderasystems.com/pub/updates/OpenLinux/2.3/current/RPMS/
      

    • ftp://ftp.calderasystems.com/pub/updates/OpenLinux/2.3/current/SRPMS
      

      • RPMS/glibc-2.1.1-3.i386.rpm
      • RPMS/glibc-devel-2.1.1-3.i386.rpm
      • RPMS/glibc-devel-static-2.1.1-3.i386.rpm
      • RPMS/glibc-localedata-2.1.1-3.i386.rpm
      • SRPMS/glibc-2.1.1-3.src.rpm
  • OpenLinux eServer 2.3 et OpenLinux eBuilder pour ECential 3.0 :

    • ftp://ftp.calderasystems.com/pub/updates/eServer/2.3/current/RPMS/
      

    • ftp://ftp.calderasystems.com/pub/updates/eServer/2.3/current/SRPMS
      

      • RPMS/glibc-2.1.3-4S.i386.rpm
      • RPMS/glibc-devel-2.1.3-4S.i386.rpm
      • RPMS/glibc-devel-static-2.1.3-4S.i386.rpm
      • RPMS/glibc-localedata-2.1.3-4S.i386.rpm
      • SRPMS/glibc-2.1.3-4S.src.rpm
  • OpenLinux eDesktop 2.4 :

    • ftp://ftp.calderasystems.com/pub/updates/eDesktop/2.4/current/RPMS/
      

    • ftp://ftp.calderasystems.com/pub/updates/eDesktop/2.4/current/SRPMS
      

      • RPMS/glibc-2.1.2-7.i386.rpm
      • RPMS/glibc-devel-2.1.2-7.i386.rpm
      • RPMS/glibc-devel-static-2.1.2-7.i386.rpm
      • RPMS/glibc-localedata-2.1.2-7.i386.rpm
      • SRPMS/glibc-2.1.2-7.src.rpm
• Slackware:

  • ftp://ftp.slackware.com/pub/slackware/slackware-current/slakware/a1/glibcso.tgz
    

  • ftp://ftp.slackware.com/pub/slackware/slackware-current/slakware/d1/glibc.tgz
    

  • ftp://ftp.slackware.com/pub/slackware/slackware-current/slakware/des1/descrypt.tgz
    

• SuSE Linux:

  • ftp://ftp.suse.com/pub/suse/i386/update/7.0/a1/shlibs-2.1.3-154.i386.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/7.0/d1/libc-2.1.3-154.i386.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/7.0/d2/libd-2.1.3-154.i386.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/7.0/zq1/libc-2.1.3-154.src.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/6.4/a1/shlibs-2.1.3-154.i386.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/6.4/d1/libc-2.1.3-154.i386.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/6.4/d2/libd-2.1.3-154.i386.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/6.4/zq1/libc-2.1.3-154.src.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/6.3/a1/shlibs-2.1.2-47.i386.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/6.3/d1/libc-2.1.2-47.i386.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/6.3/d2/libd-2.1.2-47.i386.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/6.3/zq1/libc-2.1.2-47.src.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/6.2/a1/shlibs-2.1.1-29.i386.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/6.2/d1/libc-2.1.1-29.i386.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/6.2/d2/libd-2.1.1-29.i386.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/6.2/zq1/libc-2.1.1-29.src.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/6.1/a1/shlibs-2000.9.5-0.i386.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/6.1/d1/libc-2000.9.5-0.i386.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/6.1/d2/libd-2000.9.5-0.i386.rpm
    

  • ftp://ftp.suse.com/pub/suse/i386/update/6.1/zq1/libc-2000.9.5-0.src.rpm
    

  • ftp://ftp.suse.com/pub/suse/sparc/update/7.0/a1/shlibs-2.1.3-154.sparc.rpm
    

  • ftp://ftp.suse.com/pub/suse/sparc/update/7.0/d1/libc-2.1.3-154.sparc.rpm
    

  • ftp://ftp.suse.com/pub/suse/sparc/update/7.0/d2/libd-2.1.3-154.sparc.rpm
    

  • ftp://ftp.suse.com/pub/suse/sparc/update/7.0/zq1/libc-2.1.3-154.src.rpm
    

  • ftp://ftp.suse.com/pub/suse/axp/update/6.4/a1/shlibs-2.1.3-154.alpha.rpm
    

  • ftp://ftp.suse.com/pub/suse/axp/update/6.4/d1/libc-2.1.3-154.alpha.rpm
    

  • ftp://ftp.suse.com/pub/suse/axp/update/6.4/d2/libd-2.1.3-154.alpha.rpm
    

  • ftp://ftp.suse.com/pub/suse/axp/update/6.4/zq1/libc-2.1.3-154.src.rpm
    

  • ftp://ftp.suse.com/pub/suse/axp/update/6.3/a1/shlibs-2.1.2-47.alpha.rpm
    

  • ftp://ftp.suse.com/pub/suse/axp/update/6.3/d1/libc-2.1.2-47.alpha.rpm
    

  • ftp://ftp.suse.com/pub/suse/axp/update/6.3/d2/libd-2.1.2-47.alpha.rpm
    

  • ftp://ftp.suse.com/pub/suse/axp/update/6.3/zq1/libc-2.1.2-47.src.rpm
    

  • ftp://ftp.suse.com/pub/suse/axp/update/6.1/a1/shlibs-2000.9.5-0.alpha.rpm
    

  • ftp://ftp.suse.com/pub/suse/axp/update/6.1/d1/libc-2000.9.5-0.alpha.rpm
    

  • ftp://ftp.suse.com/pub/suse/axp/update/6.1/d2/libd-2000.9.5-0.alpha.rpm
    

  • ftp://ftp.suse.com/pub/suse/axp/update/6.1/zq1/libc-2000.9.5-0.src.rpm
    

  • ftp://ftp.suse.com/pub/suse/ppc/update/6.4/a1/shlibs-2.1.3-154.ppc.rpm
    

  • ftp://ftp.suse.com/pub/suse/ppc/update/6.4/d1/libc-2.1.3-154.ppc.rpm
    

  • ftp://ftp.suse.com/pub/suse/ppc/update/6.4/d2/libd-2.1.3-154.ppc.rpm
    

  • ftp://ftp.suse.com/pub/suse/ppc/update/6.4/zq1/libc-2.1.3-154.src.rpm
    

• Linux-Mandrake 7.0 et 7.1:
  • 7.0/RPMS/glibc-2.1.3-16mdk.i586.rpm
  • 7.0/RPMS/glibc-devel-2.1.3-16mdk.i586.rpm
  • 7.0/RPMS/glibc-profile-2.1.3-16mdk.i586.rpm
  • 7.0/SRPMS/glibc-2.1.3-16mdk.src.rpm
  • 7.1/RPMS/glibc-2.1.3-17mdk.i586.rpm
  • 7.1/RPMS/glibc-devel-2.1.3-17mdk.i586.rpm
  • 7.1/RPMS/glibc-profile-2.1.3-17mdk.i586.rpm
  • 7.1/SRPMS/glibc-2.1.3-17mdk.src.rpm
• Red Hat:

  • ftp://updates.redhat.com/5.2/sparc/glibc-2.0.7-29.4.sparc.rpm
    

  • ftp://updates.redhat.com/5.2/sparc/glibc-debug-2.0.7-29.4.sparc.rpm
    

  • ftp://updates.redhat.com/5.2/sparc/glibc-devel-2.0.7-29.4.sparc.rpm
    

  • ftp://updates.redhat.com/5.2/sparc/glibc-profile-2.0.7-29.4.sparc.rpm
    

  • ftp://updates.redhat.com/5.2/alpha/glibc-2.0.7-29.4.alpha.rpm
    

  • ftp://updates.redhat.com/5.2/alpha/glibc-debug-2.0.7-29.4.alpha.rpm
    

  • ftp://updates.redhat.com/5.2/alpha/glibc-devel-2.0.7-29.4.alpha.rpm
    

  • ftp://updates.redhat.com/5.2/alpha/glibc-profile-2.0.7-29.4.alpha.rpm
    

  • ftp://updates.redhat.com/5.2/i386/glibc-2.0.7-29.4.i386.rpm
    

  • ftp://updates.redhat.com/5.2/i386/glibc-debug-2.0.7-29.4.i386.rpm
    

  • ftp://updates.redhat.com/5.2/i386/glibc-devel-2.0.7-29.4.i386.rpm
    

  • ftp://updates.redhat.com/5.2/i386/glibc-profile-2.0.7-29.4.i386.rpm
    

  • ftp://updates.redhat.com/5.2/SRPMS/glibc-2.0.7-29.4.src.rpm
    

  • ftp://updates.redhat.com/6.2/sparc/glibc-2.1.3-21.sparc.rpm
    

  • ftp://updates.redhat.com/6.2/sparc/glibc-devel-2.1.3-21.sparc.rpm
    

  • ftp://updates.redhat.com/6.2/sparc/glibc-profile-2.1.3-21.sparc.rpm
    

  • ftp://updates.redhat.com/6.2/sparc/nscd-2.1.3-21.sparc.rpm
    

  • ftp://updates.redhat.com/6.2/i386/glibc-2.1.3-21.i386.rpm
    

  • ftp://updates.redhat.com/6.2/i386/glibc-devel-2.1.3-21.i386.rpm
    

  • ftp://updates.redhat.com/6.2/i386/glibc-profile-2.1.3-21.i386.rpm
    

  • ftp://updates.redhat.com/6.2/i386/nscd-2.1.3-21.i386.rpm
    

  • ftp://updates.redhat.com/6.2/alpha/glibc-2.1.3-21.alpha.rpm
    

  • ftp://updates.redhat.com/6.2/alpha/glibc-devel-2.1.3-21.alpha.rpm
    

  • ftp://updates.redhat.com/6.2/alpha/glibc-profile-2.1.3-21.alpha.rpm
    

  • ftp://updates.redhat.com/6.2/alpha/nscd-2.1.3-21.alpha.rpm
    

  • ftp://updates.redhat.com/6.2/sparcv9/glibc-2.1.3-21.sparcv9.rpm
    

  • ftp://updates.redhat.com/6.2/SRPMS/glibc-2.1.3-21.src.rpm
    

• TurboLinux:

  • ftp://ftp.turbolinux.com/pub/updates/6.0/glibc-2.1.2-17S.i386.rpm
    

  • ftp://ftp.turbolinux.com/pub/updates/6.0/glibc-2.1.2-15S.i386.rpm
    

  • ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/glibc-2.1.2-17S.src.rpm
    

  • ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/glibc-2.1.2-15S.src.rpm
    

Si votre version d'unix n'est pas citée, veuillez consulter le CERTA.

Documentation

• Bulletin de sécurité Debian :

  http://security.debian.org/security/2000/20000902
  

• Bulletin de sécurité RedHat :

  http://www.redhat.com/support/errata/RHSA-2000-057-04.html