int(3715)

Boletines de Vulnerabilidades


Denegación de servicio en OpenAFS

Clasificación de la vulnerabilidad

Propiedad Valor
Nivel de Confianza Oficial
Impacto Denegación de Servicio
Dificultad Avanzado
Requerimientos del atacante Acceso remoto sin cuenta a un servicio exotico

Información sobre el sistema

Propiedad Valor
Fabricante afectado GNU/Linux
Software afectado OpenAFS 1.3.x >= 1.3.50
OpenAFS 1.4.x <= 1.4.5
OpenAFS 1.5.x <= 1.5.27

Descripción

Se ha descubierto una vulnerabilidad de tipo condición de carrera en el sistema de ficheros OpenAFS en la rama 1.3 versiones 1.3.50 y posteriores, en la rama 1.4 versiones anteriores a la 1.4.5 y en la rama 1.5 versiones anteriores a la 1.5.27. La vulnerabilidad reside en que si simultáneamente se bloquean y desbloquean ficheros el gestor "GiveUpAllCallBacks RPC" realizaría ciertas operaciones sin la opción de bloqueo "host_glock" lo que causaría una condición de carrera.

Un atacante remoto podría causar una denegación de servicio.

Solución



Actualización de software

Debian (DSA 1458-1)

Debian Linux 4.0
Source
http://security.debian.org/pool/updates/main/o/openafs/openafs_1.4.2-6etch1.diff.gz
http://security.debian.org/pool/updates/main/o/openafs/openafs_1.4.2.orig.tar.gz
http://security.debian.org/pool/updates/main/o/openafs/openafs_1.4.2-6etch1.dsc
Architecture independent
http://security.debian.org/pool/updates/main/o/openafs/openafs-doc_1.4.2-6etch1_all.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-modules-source_1.4.2-6etch1_all.deb
alpha
http://security.debian.org/pool/updates/main/o/openafs/openafs-client_1.4.2-6etch1_alpha.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-fileserver_1.4.2-6etch1_alpha.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-krb5_1.4.2-6etch1_alpha.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-kpasswd_1.4.2-6etch1_alpha.deb
http://security.debian.org/pool/updates/main/o/openafs/libopenafs-dev_1.4.2-6etch1_alpha.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbg_1.4.2-6etch1_alpha.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbserver_1.4.2-6etch1_alpha.deb
http://security.debian.org/pool/updates/main/o/openafs/libpam-openafs-kaserver_1.4.2-6etch1_alpha.deb
amd64
http://security.debian.org/pool/updates/main/o/openafs/libpam-openafs-kaserver_1.4.2-6etch1_amd64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbg_1.4.2-6etch1_amd64.deb
http://security.debian.org/pool/updates/main/o/openafs/libopenafs-dev_1.4.2-6etch1_amd64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-krb5_1.4.2-6etch1_amd64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-client_1.4.2-6etch1_amd64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-fileserver_1.4.2-6etch1_amd64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-kpasswd_1.4.2-6etch1_amd64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbserver_1.4.2-6etch1_amd64.deb
hppa
http://security.debian.org/pool/updates/main/o/openafs/openafs-kpasswd_1.4.2-6etch1_hppa.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbg_1.4.2-6etch1_hppa.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbserver_1.4.2-6etch1_hppa.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-fileserver_1.4.2-6etch1_hppa.deb
http://security.debian.org/pool/updates/main/o/openafs/libopenafs-dev_1.4.2-6etch1_hppa.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-krb5_1.4.2-6etch1_hppa.deb
http://security.debian.org/pool/updates/main/o/openafs/libpam-openafs-kaserver_1.4.2-6etch1_hppa.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-client_1.4.2-6etch1_hppa.deb
i386
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbserver_1.4.2-6etch1_i386.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbg_1.4.2-6etch1_i386.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-kpasswd_1.4.2-6etch1_i386.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-client_1.4.2-6etch1_i386.deb
http://security.debian.org/pool/updates/main/o/openafs/libopenafs-dev_1.4.2-6etch1_i386.deb
http://security.debian.org/pool/updates/main/o/openafs/libpam-openafs-kaserver_1.4.2-6etch1_i386.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-fileserver_1.4.2-6etch1_i386.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-krb5_1.4.2-6etch1_i386.deb
ia64
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbg_1.4.2-6etch1_ia64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-kpasswd_1.4.2-6etch1_ia64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-krb5_1.4.2-6etch1_ia64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbserver_1.4.2-6etch1_ia64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-fileserver_1.4.2-6etch1_ia64.deb
http://security.debian.org/pool/updates/main/o/openafs/libpam-openafs-kaserver_1.4.2-6etch1_ia64.deb
http://security.debian.org/pool/updates/main/o/openafs/libopenafs-dev_1.4.2-6etch1_ia64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-client_1.4.2-6etch1_ia64.deb
powerpc
http://security.debian.org/pool/updates/main/o/openafs/libopenafs-dev_1.4.2-6etch1_powerpc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-krb5_1.4.2-6etch1_powerpc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbg_1.4.2-6etch1_powerpc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-client_1.4.2-6etch1_powerpc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-kpasswd_1.4.2-6etch1_powerpc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbserver_1.4.2-6etch1_powerpc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-fileserver_1.4.2-6etch1_powerpc.deb
http://security.debian.org/pool/updates/main/o/openafs/libpam-openafs-kaserver_1.4.2-6etch1_powerpc.deb
s390
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbg_1.4.2-6etch1_s390.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-krb5_1.4.2-6etch1_s390.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-client_1.4.2-6etch1_s390.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-kpasswd_1.4.2-6etch1_s390.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbserver_1.4.2-6etch1_s390.deb
http://security.debian.org/pool/updates/main/o/openafs/libpam-openafs-kaserver_1.4.2-6etch1_s390.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-fileserver_1.4.2-6etch1_s390.deb
http://security.debian.org/pool/updates/main/o/openafs/libopenafs-dev_1.4.2-6etch1_s390.deb
sparc
http://security.debian.org/pool/updates/main/o/openafs/libpam-openafs-kaserver_1.4.2-6etch1_sparc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-fileserver_1.4.2-6etch1_sparc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-client_1.4.2-6etch1_sparc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbg_1.4.2-6etch1_sparc.deb
http://security.debian.org/pool/updates/main/o/openafs/libopenafs-dev_1.4.2-6etch1_sparc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbserver_1.4.2-6etch1_sparc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-kpasswd_1.4.2-6etch1_sparc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-krb5_1.4.2-6etch1_sparc.deb

Debian Linux 3.1
Source
http://security.debian.org/pool/updates/main/o/openafs/openafs_1.3.81-3sarge3.dsc
http://security.debian.org/pool/updates/main/o/openafs/openafs_1.3.81.orig.tar.gz
http://security.debian.org/pool/updates/main/o/openafs/openafs_1.3.81-3sarge3.diff.gz
Architecture independent
http://security.debian.org/pool/updates/main/o/openafs/openafs-modules-source_1.3.81-3sarge3_all.deb
alpha
http://security.debian.org/pool/updates/main/o/openafs/openafs-fileserver_1.3.81-3sarge3_alpha.deb
http://security.debian.org/pool/updates/main/o/openafs/libpam-openafs-kaserver_1.3.81-3sarge3_alpha.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbserver_1.3.81-3sarge3_alpha.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-kpasswd_1.3.81-3sarge3_alpha.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-client_1.3.81-3sarge3_alpha.deb
http://security.debian.org/pool/updates/main/o/openafs/libopenafs-dev_1.3.81-3sarge3_alpha.deb
amd64
http://security.debian.org/pool/updates/main/o/openafs/libopenafs-dev_1.3.81-3sarge3_amd64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbserver_1.3.81-3sarge3_amd64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-kpasswd_1.3.81-3sarge3_amd64.deb
http://security.debian.org/pool/updates/main/o/openafs/libpam-openafs-kaserver_1.3.81-3sarge3_amd64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-client_1.3.81-3sarge3_amd64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-fileserver_1.3.81-3sarge3_amd64.deb
hppa
http://security.debian.org/pool/updates/main/o/openafs/openafs-kpasswd_1.3.81-3sarge3_hppa.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-fileserver_1.3.81-3sarge3_hppa.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-client_1.3.81-3sarge3_hppa.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbserver_1.3.81-3sarge3_hppa.deb
http://security.debian.org/pool/updates/main/o/openafs/libopenafs-dev_1.3.81-3sarge3_hppa.deb
http://security.debian.org/pool/updates/main/o/openafs/libpam-openafs-kaserver_1.3.81-3sarge3_hppa.deb
ia32
http://security.debian.org/pool/updates/main/o/openafs/libpam-openafs-kaserver_1.3.81-3sarge3_i386.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-fileserver_1.3.81-3sarge3_i386.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-client_1.3.81-3sarge3_i386.deb
http://security.debian.org/pool/updates/main/o/openafs/libopenafs-dev_1.3.81-3sarge3_i386.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-kpasswd_1.3.81-3sarge3_i386.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbserver_1.3.81-3sarge3_i386.deb
ia64
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbserver_1.3.81-3sarge3_ia64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-client_1.3.81-3sarge3_ia64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-kpasswd_1.3.81-3sarge3_ia64.deb
http://security.debian.org/pool/updates/main/o/openafs/libpam-openafs-kaserver_1.3.81-3sarge3_ia64.deb
http://security.debian.org/pool/updates/main/o/openafs/libopenafs-dev_1.3.81-3sarge3_ia64.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-fileserver_1.3.81-3sarge3_ia64.deb
powerpc
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbserver_1.3.81-3sarge3_powerpc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-kpasswd_1.3.81-3sarge3_powerpc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-client_1.3.81-3sarge3_powerpc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-fileserver_1.3.81-3sarge3_powerpc.deb
http://security.debian.org/pool/updates/main/o/openafs/libopenafs-dev_1.3.81-3sarge3_powerpc.deb
http://security.debian.org/pool/updates/main/o/openafs/libpam-openafs-kaserver_1.3.81-3sarge3_powerpc.deb
s390
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbserver_1.3.81-3sarge3_s390.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-kpasswd_1.3.81-3sarge3_s390.deb
http://security.debian.org/pool/updates/main/o/openafs/libpam-openafs-kaserver_1.3.81-3sarge3_s390.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-client_1.3.81-3sarge3_s390.deb
http://security.debian.org/pool/updates/main/o/openafs/libopenafs-dev_1.3.81-3sarge3_s390.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-fileserver_1.3.81-3sarge3_s390.deb
sparc
http://security.debian.org/pool/updates/main/o/openafs/libpam-openafs-kaserver_1.3.81-3sarge3_sparc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-client_1.3.81-3sarge3_sparc.deb
http://security.debian.org/pool/updates/main/o/openafs/libopenafs-dev_1.3.81-3sarge3_sparc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-fileserver_1.3.81-3sarge3_sparc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-kpasswd_1.3.81-3sarge3_sparc.deb
http://security.debian.org/pool/updates/main/o/openafs/openafs-dbserver_1.3.81-3sarge3_sparc.deb

Suse Linux
Las actualizaciones pueden descargarse mediante YAST o del servidor FTP oficial de Suse Linux.

Identificadores estándar

Propiedad Valor
CVE CVE-2007-6599
BID 27132

Recursos adicionales

Debian Security Advisory (DSA 1458-1)
http://lists.debian.org/debian-security-announce/debian-security-announce-2008/msg00016.html

SUSE Security Advisory (SUSE-SR:2008:002)
http://www.novell.com/linux/security/advisories/suse_security_summary_report.html

Histórico de versiones

Versión Comentario Fecha
1.0 Aviso emitido 2008-01-21
1.1 Aviso emitido por Suse (SUSE-SR:2008:002) 2008-01-30

Miembros de

Ministerio de Defensa
CNI
CCN
CCN-CERT