Bulletin d'alerte Debian

DSA-262-1 samba -- Exploitation à distance

Date du rapport :
15 mars 2003
Paquets concernés :
samba
Vulnérabilité :
Oui
Références dans la base de données de sécurité :
Dans la base de données de suivi des bogues (chez SecurityFocus) : Identifiant BugTraq 7107, Identifiant BugTraq 7106.
Dans le dictionnaire CVE du Mitre : CVE-2003-0085, CVE-2003-0086.
Plus de précisions :

Sebastian Krahmer membre de l'équipe chargée des audits de sécurité chez SuSE a identifié deux problèmes dans samba, une implémentation populaire de SMB/CIFS. Ces deux problèmes sont :

  • un débordement de tampons dans le code chargé de réassembler les fragments de paquets SMB/CIFS. Ce code est utilisé dans smbd. Étant donné que smbd fonctionne avec les privilèges de superutilisateur, un assaillant peut l'utiliser pour obtenir les privilèges de superutilisateur sur une machine faisant fonctionner smbd ;
  • le code qui écrit dans les fichiers de registre était vulnérable à une « course » via la commande chown (chown race), ce qui offrait la possibilité à un utilisateur local de réécrire les fichiers systèmes.

Ces deux problèmes ont été corrigés dans la version 2.2.8 chez l'auteur (upstream version), et dans la version 2.2.3a-12.1 du paquet pour Debian GNU/Linux 3.0/woody.

Corrigé dans :

Debian GNU/Linux 3.0 (woody)

Source :
http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-12.1.dsc
http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a.orig.tar.gz
http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-12.1.diff.gz
Composant indépendant de l'architecture :
http://security.debian.org/pool/updates/main/s/samba/samba-doc_2.2.3a-12.1_all.deb
alpha (DEC Alpha):
http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-12.1_alpha.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-12.1_alpha.deb
http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-12.1_alpha.deb
http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-12.1_alpha.deb
http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-12.1_alpha.deb
http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-12.1_alpha.deb
http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-12.1_alpha.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-12.1_alpha.deb
http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-12.1_alpha.deb
arm (ARM):
http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-12.1_arm.deb
http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-12.1_arm.deb
http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-12.1_arm.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-12.1_arm.deb
http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-12.1_arm.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-12.1_arm.deb
http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-12.1_arm.deb
http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-12.1_arm.deb
http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-12.1_arm.deb
hppa (HP PA RISC):
http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-12.1_hppa.deb
http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-12.1_hppa.deb
http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-12.1_hppa.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-12.1_hppa.deb
http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-12.1_hppa.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-12.1_hppa.deb
http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-12.1_hppa.deb
http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-12.1_hppa.deb
http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-12.1_hppa.deb
i386 (Intel ia32):
http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-12.1_i386.deb
http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-12.1_i386.deb
http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-12.1_i386.deb
http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-12.1_i386.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-12.1_i386.deb
http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-12.1_i386.deb
http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-12.1_i386.deb
http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-12.1_i386.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-12.1_i386.deb
ia64 (Intel ia64):
http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-12.1_ia64.deb
http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-12.1_ia64.deb
http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-12.1_ia64.deb
http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-12.1_ia64.deb
http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-12.1_ia64.deb
http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-12.1_ia64.deb
http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-12.1_ia64.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-12.1_ia64.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-12.1_ia64.deb
mips (MIPS (Big Endian)):
http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-12.1_mips.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-12.1_mips.deb
http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-12.1_mips.deb
http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-12.1_mips.deb
http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-12.1_mips.deb
http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-12.1_mips.deb
http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-12.1_mips.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-12.1_mips.deb
http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-12.1_mips.deb
mipsel (MIPS (Little Endian)):
http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-12.1_mipsel.deb
http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-12.1_mipsel.deb
http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-12.1_mipsel.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-12.1_mipsel.deb
http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-12.1_mipsel.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-12.1_mipsel.deb
http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-12.1_mipsel.deb
http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-12.1_mipsel.deb
http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-12.1_mipsel.deb
powerpc (PowerPC):
http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-12.1_powerpc.deb
http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-12.1_powerpc.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-12.1_powerpc.deb
http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-12.1_powerpc.deb
http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-12.1_powerpc.deb
http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-12.1_powerpc.deb
http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-12.1_powerpc.deb
http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-12.1_powerpc.deb
http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-12.1_powerpc.deb
s390 (IBM S/390):
http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-12.1_s390.deb
http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-12.1_s390.deb
http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-12.1_s390.deb
http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-12.1_s390.deb
http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-12.1_s390.deb
http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-12.1_s390.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-12.1_s390.deb
http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-12.1_s390.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-12.1_s390.deb
sparc (Sun SPARC/UltraSPARC):
http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-12.1_sparc.deb
http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-12.1_sparc.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-12.1_sparc.deb
http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-12.1_sparc.deb
http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-12.1_sparc.deb
http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-12.1_sparc.deb
http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-12.1_sparc.deb
http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-12.1_sparc.deb
http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-12.1_sparc.deb

Les sommes MD5 des fichiers indiqués sont disponibles sur la page originale de l'alerte de sécurité.