int(5077)

Boletines de Vulnerabilidades

Salto de restricciones en Sendmail

Clasificación de la vulnerabilidad
Propiedad Valor
Nivel de Confianza Oficial
Impacto Aumento de privilegios
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 Sendmail < 8.14.4

Descripción
Se ha descubierto una vulnerabilidad en Sendmail 8.14. La vulnerabilidad reside en un error en el manejo del carácter '\0' en el campo Common Name de un certificado X.509.

Un atacante remoto podría suplantar servidores SMPT SSL arbitrarios o saltar restricciones de acceso mediante un certificado especialmente diseñado emitido por una CA legítima.

Solución


Actualización de software

Debian (DSA-1985-1)

Debian Linux 4.0
Source
http://security.debian.org/pool/updates/main/s/sendmail/sendmail_8.13.8-3+etch1.diff.gz
http://security.debian.org/pool/updates/main/s/sendmail/sendmail_8.13.8-3+etch1.dsc
http://security.debian.org/pool/updates/main/s/sendmail/sendmail_8.13.8.orig.tar.gz
Arquitectura independiente:
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-cf_8.13.8-3+etch1_all.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-doc_8.13.8-3+etch1_all.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail_8.13.8-3+etch1_all.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-base_8.13.8-3+etch1_all.deb
alpha (DEC Alpha)
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.13.8-3+etch1_alpha.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0_8.13.8-3+etch1_alpha.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0-dbg_8.13.8-3+etch1_alpha.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.13.8-3+etch1_alpha.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.13.8-3+etch1_alpha.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.13.8-3+etch1_alpha.deb
amd64 (AMD x86_64 (AMD64))
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.13.8-3+etch1_amd64.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.13.8-3+etch1_amd64.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.13.8-3+etch1_amd64.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0-dbg_8.13.8-3+etch1_amd64.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0_8.13.8-3+etch1_amd64.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.13.8-3+etch1_amd64.deb
arm (ARM)
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.13.8-3+etch1_arm.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0-dbg_8.13.8-3+etch1_arm.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.13.8-3+etch1_arm.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.13.8-3+etch1_arm.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.13.8-3+etch1_arm.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0_8.13.8-3+etch1_arm.deb
hppa (HP PA RISC)
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.13.8-3+etch1_hppa.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.13.8-3+etch1_hppa.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0_8.13.8-3+etch1_hppa.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0-dbg_8.13.8-3+etch1_hppa.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.13.8-3+etch1_hppa.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.13.8-3+etch1_hppa.deb
i386 (Intel ia32)
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0_8.13.8-3+etch1_i386.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.13.8-3+etch1_i386.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.13.8-3+etch1_i386.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.13.8-3+etch1_i386.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.13.8-3+etch1_i386.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0-dbg_8.13.8-3+etch1_i386.deb
ia64 (Intel ia64)
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0-dbg_8.13.8-3+etch1_ia64.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.13.8-3+etch1_ia64.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0_8.13.8-3+etch1_ia64.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.13.8-3+etch1_ia64.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.13.8-3+etch1_ia64.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.13.8-3+etch1_ia64.deb
mipsel (MIPS (Little Endian))
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.13.8-3+etch1_mipsel.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0-dbg_8.13.8-3+etch1_mipsel.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0_8.13.8-3+etch1_mipsel.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.13.8-3+etch1_mipsel.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.13.8-3+etch1_mipsel.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.13.8-3+etch1_mipsel.deb
powerpc (PowerPC)
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0_8.13.8-3+etch1_powerpc.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.13.8-3+etch1_powerpc.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.13.8-3+etch1_powerpc.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.13.8-3+etch1_powerpc.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.13.8-3+etch1_powerpc.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0-dbg_8.13.8-3+etch1_powerpc.deb
s390 (IBM S/390)
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0-dbg_8.13.8-3+etch1_s390.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0_8.13.8-3+etch1_s390.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.13.8-3+etch1_s390.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.13.8-3+etch1_s390.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.13.8-3+etch1_s390.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.13.8-3+etch1_s390.deb
sparc (Sun SPARC/UltraSPARC)
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.13.8-3+etch1_sparc.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0-dbg_8.13.8-3+etch1_sparc.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.13.8-3+etch1_sparc.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.13.8-3+etch1_sparc.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter0_8.13.8-3+etch1_sparc.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.13.8-3+etch1_sparc.deb

Debian (DSA-1985-1)

Debian Linux 5.0
Source
http://security.debian.org/pool/updates/main/s/sendmail/sendmail_8.14.3-5+lenny1.dsc
http://security.debian.org/pool/updates/main/s/sendmail/sendmail_8.14.3-5+lenny1.diff.gz
http://security.debian.org/pool/updates/main/s/sendmail/sendmail_8.14.3.orig.tar.gz
Arquitectura independiente:
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-cf_8.14.3-5+lenny1_all.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-doc_8.14.3-5+lenny1_all.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail_8.14.3-5+lenny1_all.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-base_8.14.3-5+lenny1_all.deb
alpha (DEC Alpha)
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1-dbg_8.14.3-5+lenny1_alpha.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.14.3-5+lenny1_alpha.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1_8.14.3-5+lenny1_alpha.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.14.3-5+lenny1_alpha.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.14.3-5+lenny1_alpha.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.14.3-5+lenny1_alpha.deb
amd64 (AMD x86_64 (AMD64))
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.14.3-5+lenny1_amd64.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1-dbg_8.14.3-5+lenny1_amd64.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.14.3-5+lenny1_amd64.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.14.3-5+lenny1_amd64.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.14.3-5+lenny1_amd64.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1_8.14.3-5+lenny1_amd64.deb
arm (ARM)
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1_8.14.3-5+lenny1_arm.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.14.3-5+lenny1_arm.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.14.3-5+lenny1_arm.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.14.3-5+lenny1_arm.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1-dbg_8.14.3-5+lenny1_arm.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.14.3-5+lenny1_arm.deb
armel (ARM EABI)
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1-dbg_8.14.3-5+lenny1_armel.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.14.3-5+lenny1_armel.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1_8.14.3-5+lenny1_armel.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.14.3-5+lenny1_armel.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.14.3-5+lenny1_armel.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.14.3-5+lenny1_armel.deb
hppa (HP PA RISC)
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.14.3-5+lenny1_hppa.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.14.3-5+lenny1_hppa.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1_8.14.3-5+lenny1_hppa.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.14.3-5+lenny1_hppa.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.14.3-5+lenny1_hppa.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1-dbg_8.14.3-5+lenny1_hppa.deb
i386 (Intel ia32)
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.14.3-5+lenny1_i386.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.14.3-5+lenny1_i386.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1_8.14.3-5+lenny1_i386.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1-dbg_8.14.3-5+lenny1_i386.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.14.3-5+lenny1_i386.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.14.3-5+lenny1_i386.deb
ia64 (Intel ia64)
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.14.3-5+lenny1_ia64.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.14.3-5+lenny1_ia64.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1_8.14.3-5+lenny1_ia64.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1-dbg_8.14.3-5+lenny1_ia64.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.14.3-5+lenny1_ia64.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.14.3-5+lenny1_ia64.deb
mips (MIPS (Big Endian))
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.14.3-5+lenny1_mips.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1_8.14.3-5+lenny1_mips.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.14.3-5+lenny1_mips.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.14.3-5+lenny1_mips.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.14.3-5+lenny1_mips.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1-dbg_8.14.3-5+lenny1_mips.deb
mipsel (MIPS (Little Endian))
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1-dbg_8.14.3-5+lenny1_mipsel.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.14.3-5+lenny1_mipsel.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.14.3-5+lenny1_mipsel.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.14.3-5+lenny1_mipsel.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1_8.14.3-5+lenny1_mipsel.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.14.3-5+lenny1_mipsel.deb
powerpc (PowerPC)
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.14.3-5+lenny1_powerpc.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1-dbg_8.14.3-5+lenny1_powerpc.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.14.3-5+lenny1_powerpc.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1_8.14.3-5+lenny1_powerpc.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.14.3-5+lenny1_powerpc.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.14.3-5+lenny1_powerpc.deb
s390 (IBM S/390)
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.14.3-5+lenny1_s390.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.14.3-5+lenny1_s390.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1-dbg_8.14.3-5+lenny1_s390.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.14.3-5+lenny1_s390.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1_8.14.3-5+lenny1_s390.deb
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.14.3-5+lenny1_s390.deb
sparc (Sun SPARC/UltraSPARC)
http://security.debian.org/pool/updates/main/s/sendmail/sensible-mda_8.14.3-5+lenny1_sparc.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1_8.14.3-5+lenny1_sparc.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter-dev_8.14.3-5+lenny1_sparc.deb
http://security.debian.org/pool/updates/main/s/sendmail/sendmail-bin_8.14.3-5+lenny1_sparc.deb
http://security.debian.org/pool/updates/main/s/sendmail/rmail_8.14.3-5+lenny1_sparc.deb
http://security.debian.org/pool/updates/main/s/sendmail/libmilter1.0.1-dbg_8.14.3-5+lenny1_sparc.deb

Identificadores estándar
Propiedad Valor
CVE CVE-2009-4565
BID 37543

Recursos adicionales
Debian Security Advisory (DSA-1985-1)
http://lists.debian.org/debian-security-announce/2010/msg00024.html

Histórico de versiones
Versión Comentario Fecha
1.0 Aviso emitido 2010-02-01
1.1 Aviso emitido por Suse (SUSE-SR:2010:006) 2010-03-18
1.2 Aviso emitido por IBM 2010-03-31
1.3 Aviso emitido por HP (HPSBUX02508) 2010-04-05
1.4 Aviso emitido por Red Hat (RHSA-2010:0237-5) 2010-04-12

Miembros de

CERT
FIRST
TF-CSIRT
EGC Group
UE
Red Nacional de SOC
Foro Nacional de Ciberseguridad
CSIRT.es
Ministerio de Defensa
CNI
CCN
CCN-CERT