Boletines de Vulnerabilidades

int(4399)

Boletines de Vulnerabilidades

Salto de validación de certificados en Lasso
Clasificación de la vulnerabilidad
Propiedad	Valor
Nivel de Confianza	Oficial
Impacto	Confidencialidad
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	Lasso <= 2.2.1
Descripción
Se ha descubierto una vulnerabilidad Lasso 2.2.1. La vulnerabilidad reside en un error en la comprobación del valor devuelto por la función "DSA_verify". Un atacante remoto podría saltar la validación de un certificado mediante una firma SSL/TLS especialmente diseñada para claves DSA y ECDSA.
Solución
Actualización de software Debian (DSA-1700-1) Debian Linux 4.0 Source http://security.debian.org/pool/updates/main/l/lasso/lasso_0.6.5-3+etch1.diff.gz http://security.debian.org/pool/updates/main/l/lasso/lasso_0.6.5.orig.tar.gz http://security.debian.org/pool/updates/main/l/lasso/lasso_0.6.5-3+etch1.dsc alpha (DEC Alpha) http://security.debian.org/pool/updates/main/l/lasso/python-lasso_0.6.5-3+etch1_alpha.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso-java_0.6.5-3+etch1_alpha.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3-dev_0.6.5-3+etch1_alpha.deb http://security.debian.org/pool/updates/main/l/lasso/php4-lasso_0.6.5-3+etch1_alpha.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3_0.6.5-3+etch1_alpha.deb amd64 (AMD x86_64 (AMD64)) http://security.debian.org/pool/updates/main/l/lasso/liblasso-java_0.6.5-3+etch1_amd64.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3_0.6.5-3+etch1_amd64.deb http://security.debian.org/pool/updates/main/l/lasso/python-lasso_0.6.5-3+etch1_amd64.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3-dev_0.6.5-3+etch1_amd64.deb http://security.debian.org/pool/updates/main/l/lasso/php4-lasso_0.6.5-3+etch1_amd64.deb arm (ARM) http://security.debian.org/pool/updates/main/l/lasso/python-lasso_0.6.5-3+etch1_arm.deb http://security.debian.org/pool/updates/main/l/lasso/php4-lasso_0.6.5-3+etch1_arm.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3_0.6.5-3+etch1_arm.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso-java_0.6.5-3+etch1_arm.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3-dev_0.6.5-3+etch1_arm.deb hppa (HP PA RISC) http://security.debian.org/pool/updates/main/l/lasso/python-lasso_0.6.5-3+etch1_hppa.deb http://security.debian.org/pool/updates/main/l/lasso/php4-lasso_0.6.5-3+etch1_hppa.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3_0.6.5-3+etch1_hppa.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso-java_0.6.5-3+etch1_hppa.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3-dev_0.6.5-3+etch1_hppa.deb i386 (Intel ia32) http://security.debian.org/pool/updates/main/l/lasso/python-lasso_0.6.5-3+etch1_i386.deb http://security.debian.org/pool/updates/main/l/lasso/php4-lasso_0.6.5-3+etch1_i386.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso-java_0.6.5-3+etch1_i386.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3_0.6.5-3+etch1_i386.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3-dev_0.6.5-3+etch1_i386.deb ia64 (Intel ia64) http://security.debian.org/pool/updates/main/l/lasso/liblasso-java_0.6.5-3+etch1_ia64.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3-dev_0.6.5-3+etch1_ia64.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3_0.6.5-3+etch1_ia64.deb http://security.debian.org/pool/updates/main/l/lasso/php4-lasso_0.6.5-3+etch1_ia64.deb http://security.debian.org/pool/updates/main/l/lasso/python-lasso_0.6.5-3+etch1_ia64.deb mips (MIPS (Big Endian)) http://security.debian.org/pool/updates/main/l/lasso/liblasso3_0.6.5-3+etch1_mips.deb http://security.debian.org/pool/updates/main/l/lasso/php4-lasso_0.6.5-3+etch1_mips.deb http://security.debian.org/pool/updates/main/l/lasso/python-lasso_0.6.5-3+etch1_mips.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso-java_0.6.5-3+etch1_mips.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3-dev_0.6.5-3+etch1_mips.deb mipsel (MIPS (Little Endian)) http://security.debian.org/pool/updates/main/l/lasso/liblasso3_0.6.5-3+etch1_mipsel.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3-dev_0.6.5-3+etch1_mipsel.deb http://security.debian.org/pool/updates/main/l/lasso/php4-lasso_0.6.5-3+etch1_mipsel.deb http://security.debian.org/pool/updates/main/l/lasso/python-lasso_0.6.5-3+etch1_mipsel.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso-java_0.6.5-3+etch1_mipsel.deb powerpc (PowerPC) http://security.debian.org/pool/updates/main/l/lasso/php4-lasso_0.6.5-3+etch1_powerpc.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso-java_0.6.5-3+etch1_powerpc.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3_0.6.5-3+etch1_powerpc.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3-dev_0.6.5-3+etch1_powerpc.deb http://security.debian.org/pool/updates/main/l/lasso/python-lasso_0.6.5-3+etch1_powerpc.deb s390 (IBM S/390) http://security.debian.org/pool/updates/main/l/lasso/php4-lasso_0.6.5-3+etch1_s390.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso-java_0.6.5-3+etch1_s390.deb http://security.debian.org/pool/updates/main/l/lasso/python-lasso_0.6.5-3+etch1_s390.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3_0.6.5-3+etch1_s390.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3-dev_0.6.5-3+etch1_s390.deb sparc (Sun SPARC/UltraSPARC) http://security.debian.org/pool/updates/main/l/lasso/php4-lasso_0.6.5-3+etch1_sparc.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3_0.6.5-3+etch1_sparc.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso-java_0.6.5-3+etch1_sparc.deb http://security.debian.org/pool/updates/main/l/lasso/liblasso3-dev_0.6.5-3+etch1_sparc.deb http://security.debian.org/pool/updates/main/l/lasso/python-lasso_0.6.5-3+etch1_sparc.deb
Identificadores estándar
Propiedad	Valor
CVE	CVE-2009-0050
BID
Recursos adicionales
Debian Security Advisory (DSA-1700-1) http://lists.debian.org/debian-security-announce/2009/msg00007.html