Boletines de Vulnerabilidades

int(3860)

Boletines de Vulnerabilidades

Denegación de servicio en Net::DNS
Clasificación de la vulnerabilidad
Propiedad	Valor
Nivel de Confianza	Oficial
Impacto	Denegación de Servicio
Dificultad	Principiante
Requerimientos del atacante	Acceso remoto sin cuenta a un servicio estandar
Información sobre el sistema
Propiedad	Valor
Fabricante afectado	GNU/Linux
Software afectado	Net::DNS 0.60 build 654
Descripción
Se ha descubierto una vulnerabilidad en Net::DNS 0.60 build 654, un DNS Resolver implementado en perl y utilizado en aplicaciones como SpamAssassin o OTRS. La vulnerabilidad reside en un error al manejar respuestas DNS malformadas en el fichero "Net/DNS/RR/A.pm". Un atacante remoto podría causar una denegación de servicio mediante un paquete de respuesta DNS especialmente diseñado. Existe un exploit público disponible.
Solución
Actualización de software Debian (DSA-1515-1) Debian Linux 3.1 Source http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.48.orig.tar.gz http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.48-1sarge1.diff.gz http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.48-1sarge1.dsc alpha (DEC Alpha) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.48-1sarge1_alpha.deb amd64 (AMD x86_64 (AMD64)) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.48-1sarge1_amd64.deb arm (ARM) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.48-1sarge1_arm.deb hppa (HP PA RISC) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.48-1sarge1_hppa.deb i386 (Intel ia32) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.48-1sarge1_i386.deb ia64 (Intel ia64) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.48-1sarge1_ia64.deb m68k (Motorola Mc680x0) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.48-1sarge1_m68k.deb mips (MIPS (Big Endian)) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.48-1sarge1_mips.deb mipsel (MIPS (Little Endian)) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.48-1sarge1_mipsel.deb powerpc (PowerPC) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.48-1sarge1_powerpc.deb s390 (IBM S/390) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.48-1sarge1_s390.deb sparc (Sun SPARC/UltraSPARC) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.48-1sarge1_sparc.deb Debian Linux 4.0 Source http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.59-1etch1.diff.gz http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.59.orig.tar.gz http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.59-1etch1.dsc alpha (DEC Alpha) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.59-1etch1_alpha.deb amd64 (AMD x86_64 (AMD64)) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.59-1etch1_amd64.deb arm (ARM) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.59-1etch1_arm.deb hppa (HP PA RISC) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.59-1etch1_hppa.deb i386 (Intel ia32) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.59-1etch1_i386.deb ia64 (Intel ia64) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.59-1etch1_ia64.deb mips (MIPS (Big Endian)) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.59-1etch1_mips.deb mipsel (MIPS (Little Endian)) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.59-1etch1_mipsel.deb powerpc (PowerPC) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.59-1etch1_powerpc.deb s390 (IBM S/390) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.59-1etch1_s390.deb sparc (Sun SPARC/UltraSPARC) http://security.debian.org/pool/updates/main/libn/libnet-dns-perl/libnet-dns-perl_0.59-1etch1_sparc.deb
Identificadores estándar
Propiedad	Valor
CVE	CVE-2007-6341
BID	26902
Recursos adicionales
Debian Security Advisory (DSA-1515-1) http://lists.debian.org/debian-security-announce/2008/msg00080.html