Boletines de Vulnerabilidades

int(3848)

Boletines de Vulnerabilidades

Salto de la autenticación en Asterisk Open Source
Clasificación de la vulnerabilidad
Propiedad	Valor
Nivel de Confianza	Oficial
Impacto	Obtener acceso
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	Asterisk Open Source 1.2.x < 1.2.26 Asterisk Open Source 1.4.x < 1.4.16 Asterisk Business Edition B.x.x < B.2.3.6 Asterisk Business Edition C.x.x < C.1.0-beta8
Descripción
Se ha descubierto una vulnerabilidad en Asterisk Open Source 1.2.x en versiones anteriores a la 1.2.26 y 1.4.x en versiones anteriores a la 1.4.16, y Business Edition B.x.x en versiones anteriores a la B.2.3.6 y C.x.x en versiones anteriores a la C.1.0-beta8. La vulnerabilidad reside en un error en la autenticación al no comprobar la dirección IP cuando se procesa una autenticación "realtime" con base de datos y autenticación basada en host. Un atacante remoto podría saltarse la autenticación mediante un nombre de usuario válido y que no utilice contraseña.
Solución
Actualización de software Suse Linux Las actualizaciones pueden descargarse mediante YAST o del servidor FTP oficial de Suse Linux. Debian (DSA-1525-1) Debian Linux 4.0 Source http://security.debian.org/pool/updates/main/a/asterisk/asterisk_1.2.13~dfsg-2etch3.diff.gz http://security.debian.org/pool/updates/main/a/asterisk/asterisk_1.2.13~dfsg.orig.tar.gz http://security.debian.org/pool/updates/main/a/asterisk/asterisk_1.2.13~dfsg-2etch3.dsc Arquitectura independiente http://security.debian.org/pool/updates/main/a/asterisk/asterisk-doc_1.2.13~dfsg-2etch3_all.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-sounds-main_1.2.13~dfsg-2etch3_all.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-config_1.2.13~dfsg-2etch3_all.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-web-vmail_1.2.13~dfsg-2etch3_all.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-dev_1.2.13~dfsg-2etch3_all.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk_1.2.13~dfsg-2etch3_all.deb alpha (DEC Alpha) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch3_alpha.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch3_alpha.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch3_alpha.deb amd64 (AMD x86_64 (AMD64)) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch3_amd64.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch3_amd64.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch3_amd64.deb arm (ARM) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch3_arm.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch3_arm.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch3_arm.deb hppa (HP PA RISC) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch3_hppa.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch3_hppa.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch3_hppa.deb i386 (Intel ia32) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch3_i386.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch3_i386.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch3_i386.deb ia64 (Intel ia64) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch3_ia64.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch3_ia64.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch3_ia64.deb mips (MIPS (Big Endian)) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch3_mips.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch3_mips.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch3_mips.deb mipsel (MIPS (Little Endian)) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch3_mipsel.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch3_mipsel.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch3_mipsel.deb powerpc (PowerPC) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch3_powerpc.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch3_powerpc.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch3_powerpc.deb s390 (IBM S/390) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch3_s390.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch3_s390.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch3_s390.deb
Identificadores estándar
Propiedad	Valor
CVE	CVE-2007-6430
BID	26928
Recursos adicionales
SUSE Security Advisory (SUSE-SR:2008:005) http://www.novell.com/linux/security/advisories/2008_5_sr.html Debian Security Advisory (DSA-1525-1) http://lists.debian.org/debian-security-announce/2008/msg00093.html