int(4170)

Boletines de Vulnerabilidades


Denegación de servicio en libxml2

Clasificación de la vulnerabilidad

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

Información sobre el sistema

Propiedad Valor
Fabricante afectado GNU/Linux
Software afectado libxml2 2.6.x

Descripción

Se ha descubierto una vulnerabilidad en libxml2 2.6. La vulnerabilidad reside en un error en el procesamiento de contenido XML.

Un atacante remoto podría causar denegación de servicio mediante documentos XML especialmente diseñados.

Solución



Actualización de software

Red Hat (RHSA-2008:0836-3)
RHEL Desktop Workstation (v. 5 cliente)
Red Hat Desktop (v. 3)
Red Hat Desktop (v. 4)
Red Hat Enterprise Linux (v. 5 servidor)
Red Hat Enterprise Linux AS (v. 2.1)
Red Hat Enterprise Linux AS (v. 3)
Red Hat Enterprise Linux AS (v. 4)
Red Hat Enterprise Linux Desktop (v. 5 cliente)
Red Hat Enterprise Linux ES (v. 2.1)
Red Hat Enterprise Linux ES (v. 3)
Red Hat Enterprise Linux ES (v. 4)
Red Hat Enterprise Linux WS (v. 2.1)
Red Hat Enterprise Linux WS (v. 3)
Red Hat Enterprise Linux WS (v. 4)
Red Hat Linux Advanced Workstation 2.1 para Itanium Processor
https://rhn.redhat.com/

Debian (DSA-1631-2)

Debian Linux 4.0
Source
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.6.27.dfsg-4.dsc
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.6.27.dfsg.orig.tar.gz
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.6.27.dfsg-4.diff.gz
Arquitectura independiente
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-doc_2.6.27.dfsg-4_all.deb
alpha (DEC Alpha)
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.6.27.dfsg-4_alpha.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dbg_2.6.27.dfsg-4_alpha.deb
http://security.debian.org/pool/updates/main/libx/libxml2/python-libxml2_2.6.27.dfsg-4_alpha.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.6.27.dfsg-4_alpha.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-utils_2.6.27.dfsg-4_alpha.deb
amd64 (AMD x86_64 (AMD64))
http://security.debian.org/pool/updates/main/libx/libxml2/python-libxml2_2.6.27.dfsg-4_amd64.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-utils_2.6.27.dfsg-4_amd64.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.6.27.dfsg-4_amd64.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dbg_2.6.27.dfsg-4_amd64.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.6.27.dfsg-4_amd64.deb
arm (ARM)
http://security.debian.org/pool/updates/main/libx/libxml2/python-libxml2_2.6.27.dfsg-4_arm.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.6.27.dfsg-4_arm.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.6.27.dfsg-4_arm.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dbg_2.6.27.dfsg-4_arm.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-utils_2.6.27.dfsg-4_arm.deb
hppa (HP PA RISC)
http://security.debian.org/pool/updates/main/libx/libxml2/python-libxml2_2.6.27.dfsg-4_hppa.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-utils_2.6.27.dfsg-4_hppa.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.6.27.dfsg-4_hppa.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dbg_2.6.27.dfsg-4_hppa.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.6.27.dfsg-4_hppa.deb
i386 (Intel ia32)
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.6.27.dfsg-4_i386.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.6.27.dfsg-4_i386.deb
http://security.debian.org/pool/updates/main/libx/libxml2/python-libxml2_2.6.27.dfsg-4_i386.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-utils_2.6.27.dfsg-4_i386.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dbg_2.6.27.dfsg-4_i386.deb
ia64 (Intel ia64)
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.6.27.dfsg-4_ia64.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.6.27.dfsg-4_ia64.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dbg_2.6.27.dfsg-4_ia64.deb
http://security.debian.org/pool/updates/main/libx/libxml2/python-libxml2_2.6.27.dfsg-4_ia64.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-utils_2.6.27.dfsg-4_ia64.deb
mips (MIPS (Big Endian))
http://security.debian.org/pool/updates/main/libx/libxml2/python-libxml2_2.6.27.dfsg-3_mips.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.6.27.dfsg-3_mips.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-utils_2.6.27.dfsg-4_mips.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dbg_2.6.27.dfsg-3_mips.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.6.27.dfsg-3_mips.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.6.27.dfsg-4_mips.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.6.27.dfsg-4_mips.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-utils_2.6.27.dfsg-3_mips.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dbg_2.6.27.dfsg-4_mips.deb
http://security.debian.org/pool/updates/main/libx/libxml2/python-libxml2_2.6.27.dfsg-4_mips.deb
mipsel (MIPS (Little Endian))
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.6.27.dfsg-4_mipsel.deb
http://security.debian.org/pool/updates/main/libx/libxml2/python-libxml2_2.6.27.dfsg-4_mipsel.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dbg_2.6.27.dfsg-4_mipsel.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.6.27.dfsg-4_mipsel.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-utils_2.6.27.dfsg-4_mipsel.deb
powerpc (PowerPC)
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-utils_2.6.27.dfsg-4_powerpc.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dbg_2.6.27.dfsg-4_powerpc.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.6.27.dfsg-4_powerpc.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.6.27.dfsg-4_powerpc.deb
http://security.debian.org/pool/updates/main/libx/libxml2/python-libxml2_2.6.27.dfsg-4_powerpc.deb
s390 (IBM S/390)
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.6.27.dfsg-4_s390.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.6.27.dfsg-4_s390.deb
http://security.debian.org/pool/updates/main/libx/libxml2/python-libxml2_2.6.27.dfsg-4_s390.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dbg_2.6.27.dfsg-4_s390.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-utils_2.6.27.dfsg-4_s390.deb
sparc (Sun SPARC/UltraSPARC)
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.6.27.dfsg-4_sparc.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.6.27.dfsg-4_sparc.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dbg_2.6.27.dfsg-4_sparc.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-utils_2.6.27.dfsg-4_sparc.deb
http://security.debian.org/pool/updates/main/libx/libxml2/python-libxml2_2.6.27.dfsg-4_sparc.deb

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

Identificadores estándar

Propiedad Valor
CVE CVE-2008-3281
BID

Recursos adicionales

Red Hat Security Advisory (RHSA-2008:0836-3)
https://rhn.redhat.com/errata/RHSA-2008-0836.html

Debian Security Advisory (DSA-1631-1)
http://lists.debian.org/debian-security-announce/2008/msg00217.html

Debian Security Advisory (DSA-1631-2)
http://lists.debian.org/debian-security-announce/2008/msg00219.html

SUSE Security Advisory (SUSE-SR:2008:018)
http://www.novell.com/linux/security/advisories/2008_18_sr.html

Histórico de versiones

Versión Comentario Fecha
1.0 Aviso emitido 2008-08-22
1.1 Aviso emitido por Debian (DSA-1631-1) 2008-08-25
1.2 Aviso actualizado por Debian (DSA-1631-1) 2008-08-27
1.3 Aviso emitido por Suse (SUSE-SR:2008:018) 2008-09-24

Miembros de

Ministerio de Defensa
CNI
CCN
CCN-CERT