Boletines de Vulnerabilidades

int(2914)

Boletines de Vulnerabilidades

Denegación de servicio en Avahi
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 exotico
Información sobre el sistema
Propiedad	Valor
Fabricante afectado	GNU/Linux
Software afectado	Avahi < 0.6.16
Descripción
Se ha descubierto una vulnerabilidad en Avahi en versiones anteriores a la 0.6.16. La vulnerabilidad reside en un error en la función "consume_labels()" en el archivo avahi-core/dns.c. Un atacante remoto podría causar una denegación de servicio (un bucle infinito) mediante una respuesta DNS comprimida que tenga una etiqueta que se apunte a si mismo.
Solución
Actualización de software Mandriva Mandriva Linux 2007 X86 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/avahi-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/avahi-dnsconfd-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/avahi-python-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/avahi-sharp-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/avahi-x11-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libavahi-client3-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libavahi-client3-devel-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libavahi-common3-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libavahi-common3-devel-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libavahi-compat-howl0-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libavahi-compat-howl0-devel-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libavahi-compat-libdns_sd1-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libavahi-compat-libdns_sd1-devel-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libavahi-core4-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libavahi-core4-devel-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libavahi-glib1-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libavahi-glib1-devel-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libavahi-qt3_1-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libavahi-qt3_1-devel-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libavahi-qt4_1-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libavahi-qt4_1-devel-0.6.13-4.2mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/SRPMS/avahi-0.6.13-4.2mdv2007.0.src.rpm X86_64 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/avahi-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/avahi-dnsconfd-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/avahi-python-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/avahi-sharp-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/avahi-x11-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64avahi-client3-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64avahi-client3-devel-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64avahi-common3-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64avahi-common3-devel-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64avahi-compat-howl0-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64avahi-compat-howl0-devel-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64avahi-compat-libdns_sd1-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64avahi-compat-libdns_sd1-devel-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64avahi-core4-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64avahi-core4-devel-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64avahi-glib1-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64avahi-glib1-devel-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64avahi-qt3_1-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64avahi-qt3_1-devel-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64avahi-qt4_1-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64avahi-qt4_1-devel-0.6.13-4.2mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/SRPMS/avahi-0.6.13-4.2mdv2007.0.src.rpm Suse Linux Las actualizaciones pueden descargarse mediante YAST o del servidor FTP oficial de Suse Linux
Identificadores estándar
Propiedad	Valor
CVE	CVE-2006-6870
BID
Recursos adicionales
Mandriva Security Advisory (MDKSA-2007:003) http://www.mandriva.com/security/advisories?name=MDKSA-2007:003 SUSE Security Summary Report (SUSE-SR:2007:007) http://www.novell.com/linux/security/advisories/2007_007_suse.html