int(1120)

Boletines de Vulnerabilidades


Múltiples desbordamientos de búfer en libXML

Clasificación de la vulnerabilidad

Propiedad Valor
Nivel de Confianza Oficial
Impacto Obtener acceso
Dificultad Principiante
Requerimientos del atacante Acceso remoto sin cuenta a un servicio exotico

Información sobre el sistema

Propiedad Valor
Fabricante afectado GNU/Linux
Software afectado libxml
libxml2 <2.6.15

Descripción

Se han descubierto múltiples vulnerabilidades de desbordamientos de búfer en las librerías libxml y libxml2. Las vulnerabilidades residen en:

- El código que maneja las conexiones ftp.
- El código que maneja las conexiones ftp vía proxy.
- El código que maneja la resolución de nombres vía DNS.

La explotación de estas vulnerabilidades podría permitir a un atacante remoto ejecutar código arbitrario a través de una aplicación que utilice libxml o libxml2 con los privilegios de dicha aplicación.

Solución

Si lo desea, aplique los mecanismos de actualización propios de su distribución, o bien baje las fuentes del software y compílelo usted mismo.


Actualización de software

libxml2
libxml2 2.6.15
ftp://xmlsoft.org/libxml2-sources-2.6.15.tar.gz

Debian Linux

Debian Linux 3.0
Source
http://security.debian.org/pool/updates/main/libx/libxml/libxml_1.8.17-2woody2.dsc
http://security.debian.org/pool/updates/main/libx/libxml/libxml_1.8.17-2woody2.diff.gz
http://security.debian.org/pool/updates/main/libx/libxml/libxml_1.8.17.orig.tar.gz
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.4.19-4woody2.dsc
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.4.19-4woody2.diff.gz
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.4.19.orig.tar.gz
Alpha
http://security.debian.org/pool/updates/main/libx/libxml/libxml-dev_1.8.17-2woody2_alpha.deb
http://security.debian.org/pool/updates/main/libx/libxml/libxml1_1.8.17-2woody2_alpha.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.4.19-4woody2_alpha.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.4.19-4woody2_alpha.deb
ARM
http://security.debian.org/pool/updates/main/libx/libxml/libxml-dev_1.8.17-2woody2_arm.deb
http://security.debian.org/pool/updates/main/libx/libxml/libxml1_1.8.17-2woody2_arm.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.4.19-4woody2_arm.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.4.19-4woody2_arm.deb
Intel IA-32
http://security.debian.org/pool/updates/main/libx/libxml/libxml-dev_1.8.17-2woody2_i386.deb
http://security.debian.org/pool/updates/main/libx/libxml/libxml1_1.8.17-2woody2_i386.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.4.19-4woody2_i386.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.4.19-4woody2_i386.deb
Intel IA-64
http://security.debian.org/pool/updates/main/libx/libxml/libxml-dev_1.8.17-2woody2_ia64.deb
http://security.debian.org/pool/updates/main/libx/libxml/libxml1_1.8.17-2woody2_ia64.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.4.19-4woody2_ia64.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.4.19-4woody2_ia64.deb
HP Precision
http://security.debian.org/pool/updates/main/libx/libxml/libxml-dev_1.8.17-2woody2_hppa.deb
http://security.debian.org/pool/updates/main/libx/libxml/libxml1_1.8.17-2woody2_hppa.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.4.19-4woody2_hppa.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.4.19-4woody2_hppa.deb
Motorola 680x0
http://security.debian.org/pool/updates/main/libx/libxml/libxml-dev_1.8.17-2woody2_m68k.deb
http://security.debian.org/pool/updates/main/libx/libxml/libxml1_1.8.17-2woody2_m68k.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.4.19-4woody2_m68k.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.4.19-4woody2_m68k.deb
Big endian MIPS
http://security.debian.org/pool/updates/main/libx/libxml/libxml-dev_1.8.17-2woody2_mips.deb
http://security.debian.org/pool/updates/main/libx/libxml/libxml1_1.8.17-2woody2_mips.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.4.19-4woody2_mips.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.4.19-4woody2_mips.deb
Little endian MIPS
http://security.debian.org/pool/updates/main/libx/libxml/libxml-dev_1.8.17-2woody2_mipsel.deb
http://security.debian.org/pool/updates/main/libx/libxml/libxml1_1.8.17-2woody2_mipsel.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.4.19-4woody2_mipsel.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.4.19-4woody2_mipsel.deb
PowerPC
http://security.debian.org/pool/updates/main/libx/libxml/libxml-dev_1.8.17-2woody2_powerpc.deb
http://security.debian.org/pool/updates/main/libx/libxml/libxml1_1.8.17-2woody2_powerpc.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.4.19-4woody2_powerpc.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.4.19-4woody2_powerpc.deb
IBM S/390
http://security.debian.org/pool/updates/main/libx/libxml/libxml-dev_1.8.17-2woody2_s390.deb
http://security.debian.org/pool/updates/main/libx/libxml/libxml1_1.8.17-2woody2_s390.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.4.19-4woody2_s390.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.4.19-4woody2_s390.deb
Sun Sparc
http://security.debian.org/pool/updates/main/libx/libxml/libxml-dev_1.8.17-2woody2_sparc.deb
http://security.debian.org/pool/updates/main/libx/libxml/libxml1_1.8.17-2woody2_sparc.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2_2.4.19-4woody2_sparc.deb
http://security.debian.org/pool/updates/main/libx/libxml2/libxml2-dev_2.4.19-4woody2_sparc.deb

Mandrake Linux

Mandrakelinux 9.2
x86
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/9.2/RPMS/libxml1-1.8.17-5.1.92mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/9.2/RPMS/libxml1-devel-1.8.17-5.1.92mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/9.2/RPMS/libxml2-2.5.11-1.3.92mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/9.2/RPMS/libxml2-devel-2.5.11-1.3.92mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/9.2/RPMS/libxml2-python-2.5.11-1.3.92mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/9.2/RPMS/libxml2-utils-2.5.11-1.3.92mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/9.2/SRPMS/libxml-1.8.17-5.1.92mdk.src.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/9.2/SRPMS/libxml2-2.5.11-1.3.92mdk.src.rpm
AMD64
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/9.2/RPMS/lib64xml1-1.8.17-5.1.92mdk.amd64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/9.2/RPMS/lib64xml1-devel-1.8.17-5.1.92mdk.amd64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/9.2/RPMS/lib64xml2-2.5.11-1.3.92mdk.amd64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/9.2/RPMS/lib64xml2-devel-2.5.11-1.3.92mdk.amd64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/9.2/RPMS/lib64xml2-python-2.5.11-1.3.92mdk.amd64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/9.2/RPMS/libxml2-utils-2.5.11-1.3.92mdk.amd64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/9.2/SRPMS/libxml-1.8.17-5.1.92mdk.src.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/9.2/SRPMS/libxml2-2.5.11-1.3.92mdk.src.rpm

Mandrakelinux 10.0
x86
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.0/RPMS/libxml1-1.8.17-6.1.100mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.0/RPMS/libxml1-devel-1.8.17-6.1.100mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.0/RPMS/libxml2-2.6.6-1.1.100mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.0/RPMS/libxml2-devel-2.6.6-1.1.100mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.0/RPMS/libxml2-python-2.6.6-1.1.100mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.0/RPMS/libxml2-utils-2.6.6-1.1.100mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.0/SRPMS/libxml-1.8.17-6.1.100mdk.src.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.0/SRPMS/libxml2-2.6.6-1.1.100mdk.src.rpm
AMD64
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/10.0/RPMS/lib64xml1-1.8.17-6.1.100mdk.amd64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/10.0/RPMS/lib64xml1-devel-1.8.17-6.1.100mdk.amd64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/10.0/RPMS/lib64xml2-2.6.6-1.1.100mdk.amd64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/10.0/RPMS/lib64xml2-devel-2.6.6-1.1.100mdk.amd64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/10.0/RPMS/lib64xml2-python-2.6.6-1.1.100mdk.amd64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/10.0/RPMS/libxml2-utils-2.6.6-1.1.100mdk.amd64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/10.0/SRPMS/libxml-1.8.17-6.1.100mdk.src.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/10.0/SRPMS/libxml2-2.6.6-1.1.100mdk.src.rpm

Mandrakelinux 10.1
x86
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.1/RPMS/libxml1-1.8.17-7.1.101mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.1/RPMS/libxml1-devel-1.8.17-7.1.101mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.1/RPMS/libxml2-2.6.13-1.1.101mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.1/RPMS/libxml2-devel-2.6.13-1.1.101mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.1/RPMS/libxml2-python-2.6.13-1.1.101mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.1/RPMS/libxml2-utils-2.6.13-1.1.101mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.1/SRPMS/libxml-1.8.17-7.1.101mdk.src.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.1/SRPMS/libxml2-2.6.13-1.1.101mdk.src.rpm
X86_64
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/10.1/RPMS/lib64xml1-1.8.17-7.1.101mdk.x86_64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/10.1/RPMS/lib64xml1-devel-1.8.17-7.1.101mdk.x86_64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/10.1/RPMS/lib64xml2-2.6.13-1.1.101mdk.x86_64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/10.1/RPMS/lib64xml2-devel-2.6.13-1.1.101mdk.x86_64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/10.1/RPMS/lib64xml2-python-2.6.13-1.1.101mdk.x86_64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/10.1/RPMS/libxml2-utils-2.6.13-1.1.101mdk.x86_64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/10.1/SRPMS/libxml-1.8.17-7.1.101mdk.src.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/10.1/SRPMS/libxml2-2.6.13-1.1.101mdk.src.rpm

Mandrake Corporate Server 2.1
x86
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/2.1/RPMS/libxml-1.8.17-3.1.C21mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/2.1/RPMS/libxml-devel-1.8.17-3.1.C21mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/2.1/SRPMS/libxml-1.8.17-3.1.C21mdk.src.rpm
X86_64
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/corporate/2.1/RPMS/libxml-1.8.17-3.1.C21mdk.x86_64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/corporate/2.1/RPMS/libxml-devel-1.8.17-3.1.C21mdk.x86_64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/corporate/2.1/SRPMS/libxml-1.8.17-3.1.C21mdk.src.rpm

Apple
Mac OS X 10.3.7 Client
http://www.apple.com/support/downloads/securityupdate2005001macosx1037client.html
Mac OS X 10.3.7 Server
http://www.apple.com/support/downloads/securityupdate2005001macosx1037server.html

Red Hat Linux (libxml)
Red Hat Desktop (v. 3)
Red Hat Enterprise Linux AS (v. 2.1)
Red Hat Enterprise Linux AS (v. 3)
Red Hat Enterprise Linux ES (v. 2.1)
Red Hat Enterprise Linux ES (v. 3)
Red Hat Enterprise Linux WS (v. 2.1)
Red Hat Enterprise Linux WS (v. 3)
Red Hat Linux Advanced Workstation 2.1 Itanium Processor
https://rhn.redhat.com/

Identificadores estándar

Propiedad Valor
CVE CAN-2004-0989
BID

Recursos adicionales

1nfamus Security Advisory
http://www.1nfamus.netfirms.com/

Debian Security Advisory DSA 582-1
http://lists.debian.org/debian-security-announce/debian-security-announce-2004/msg00191.html

Mandrakesoft Security Advisory MDKSA-2004:127
http://www.mandrakesoft.com/security/advisories?name=MDKSA-2004:127

Red Hat Security Advisory RHSA-2004:615-11
https://rhn.redhat.com/errata/RHSA-2004-615.html

Red Hat Security Advisory RHSA-2004:650-09
https://rhn.redhat.com/errata/RHSA-2004-650.html

Security Update 2005-001 for Mac OS X
http://docs.info.apple.com/article.html?artnum=300770

Histórico de versiones

Versión Comentario Fecha
1.0 Aviso emitido 2004-11-03
1.1 Aviso emitido por Mandrake (MDKSA-2004:127) 2004-11-05
1.2 Aviso emitido por Red Hat (RHSA-2004:615-11) 2004-11-15
1.3 Nuevos parches emitidos por Red Hat Linux (RHSA-2004:650-03) 2004-12-17
1.4 Aviso emitido por Apple (2005-001) 2005-01-26
1.5 Aviso actualizado por Red Hat (RHSA-2004:650-09) 2005-05-27

Miembros de

Ministerio de Defensa
CNI
CCN
CCN-CERT