Boletines de Vulnerabilidades

int(5037)

Boletines de Vulnerabilidades

Denegación de servicio en Ubound
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	Ubound 1.3
Descripción
Se ha descubierto una vulnerabilidad en Unbound 1.3. La vulnerabilidad reside en un error en la comprobación de firmas en registros NSEC3. Un atacante remoto podría provocar que dominios que usen la variante DNSSEC de NSEC3 perdieran su cifrado mediante ciertos ataques de DNS con respuestas de delegaciones especialmente diseñadas.
Solución
Actualización de software Debian (DSA-1963-1) Debian Linux 5.0 Source http://security.debian.org/pool/updates/main/u/unbound/unbound_1.0.2.orig.tar.gz http://security.debian.org/pool/updates/main/u/unbound/unbound_1.0.2-1+lenny1.diff.gz http://security.debian.org/pool/updates/main/u/unbound/unbound_1.0.2-1+lenny1.dsc alpha (DEC Alpha) http://security.debian.org/pool/updates/main/u/unbound/libunbound-dev_1.0.2-1+lenny1_alpha.deb http://security.debian.org/pool/updates/main/u/unbound/unbound-host_1.0.2-1+lenny1_alpha.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound0_1.0.2-1+lenny1_alpha.deb http://security.debian.org/pool/updates/main/u/unbound/unbound_1.0.2-1+lenny1_alpha.deb amd64 (AMD x86_64 (AMD64)) http://security.debian.org/pool/updates/main/u/unbound/libunbound0_1.0.2-1+lenny1_amd64.deb http://security.debian.org/pool/updates/main/u/unbound/unbound_1.0.2-1+lenny1_amd64.deb http://security.debian.org/pool/updates/main/u/unbound/unbound-host_1.0.2-1+lenny1_amd64.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound-dev_1.0.2-1+lenny1_amd64.deb arm (ARM) http://security.debian.org/pool/updates/main/u/unbound/unbound-host_1.0.2-1+lenny1_arm.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound0_1.0.2-1+lenny1_arm.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound-dev_1.0.2-1+lenny1_arm.deb http://security.debian.org/pool/updates/main/u/unbound/unbound_1.0.2-1+lenny1_arm.deb armel (ARM EABI) http://security.debian.org/pool/updates/main/u/unbound/unbound_1.0.2-1+lenny1_armel.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound0_1.0.2-1+lenny1_armel.deb http://security.debian.org/pool/updates/main/u/unbound/unbound-host_1.0.2-1+lenny1_armel.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound-dev_1.0.2-1+lenny1_armel.deb hppa (HP PA RISC) http://security.debian.org/pool/updates/main/u/unbound/libunbound0_1.0.2-1+lenny1_hppa.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound-dev_1.0.2-1+lenny1_hppa.deb http://security.debian.org/pool/updates/main/u/unbound/unbound_1.0.2-1+lenny1_hppa.deb http://security.debian.org/pool/updates/main/u/unbound/unbound-host_1.0.2-1+lenny1_hppa.deb i386 (Intel ia32) http://security.debian.org/pool/updates/main/u/unbound/unbound-host_1.0.2-1+lenny1_i386.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound0_1.0.2-1+lenny1_i386.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound-dev_1.0.2-1+lenny1_i386.deb http://security.debian.org/pool/updates/main/u/unbound/unbound_1.0.2-1+lenny1_i386.deb ia64 (Intel ia64) http://security.debian.org/pool/updates/main/u/unbound/unbound_1.0.2-1+lenny1_ia64.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound-dev_1.0.2-1+lenny1_ia64.deb http://security.debian.org/pool/updates/main/u/unbound/unbound-host_1.0.2-1+lenny1_ia64.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound0_1.0.2-1+lenny1_ia64.deb mips (MIPS (Big Endian)) http://security.debian.org/pool/updates/main/u/unbound/unbound_1.0.2-1+lenny1_mips.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound-dev_1.0.2-1+lenny1_mips.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound0_1.0.2-1+lenny1_mips.deb http://security.debian.org/pool/updates/main/u/unbound/unbound-host_1.0.2-1+lenny1_mips.deb mipsel (MIPS (Little Endian)) http://security.debian.org/pool/updates/main/u/unbound/libunbound-dev_1.0.2-1+lenny1_mipsel.deb http://security.debian.org/pool/updates/main/u/unbound/unbound-host_1.0.2-1+lenny1_mipsel.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound0_1.0.2-1+lenny1_mipsel.deb http://security.debian.org/pool/updates/main/u/unbound/unbound_1.0.2-1+lenny1_mipsel.deb powerpc (PowerPC) http://security.debian.org/pool/updates/main/u/unbound/unbound_1.0.2-1+lenny1_powerpc.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound-dev_1.0.2-1+lenny1_powerpc.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound0_1.0.2-1+lenny1_powerpc.deb http://security.debian.org/pool/updates/main/u/unbound/unbound-host_1.0.2-1+lenny1_powerpc.deb s390 (IBM S/390) http://security.debian.org/pool/updates/main/u/unbound/unbound_1.0.2-1+lenny1_s390.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound0_1.0.2-1+lenny1_s390.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound-dev_1.0.2-1+lenny1_s390.deb http://security.debian.org/pool/updates/main/u/unbound/unbound-host_1.0.2-1+lenny1_s390.deb sparc (Sun SPARC/UltraSPARC) http://security.debian.org/pool/updates/main/u/unbound/unbound_1.0.2-1+lenny1_sparc.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound-dev_1.0.2-1+lenny1_sparc.deb http://security.debian.org/pool/updates/main/u/unbound/libunbound0_1.0.2-1+lenny1_sparc.deb http://security.debian.org/pool/updates/main/u/unbound/unbound-host_1.0.2-1+lenny1_sparc.deb
Identificadores estándar
Propiedad	Valor
CVE	CVE-2009-3602
BID
Recursos adicionales
Debian Security Advisory (DSA-1963-1) http://lists.debian.org/debian-security-announce/2009/msg00285.html