int(2169)

Boletines de Vulnerabilidades


Desbordamiento de búfer local en LibAST

Clasificación de la vulnerabilidad

Propiedad Valor
Nivel de Confianza Oficial
Impacto Aumento de privilegios
Dificultad Principiante
Requerimientos del atacante Acceso remoto con cuenta

Información sobre el sistema

Propiedad Valor
Fabricante afectado GNU/Linux
Software afectado LibAST

Descripción

Se ha descubierto una vulnerabilidad en Library of Assorted Spiffy Things (LibAST) 0.6.1 y anteriores. La vulnerabilidad reside en un desbordamiento de búfer en la función "conf_find_file()" del motor de configuración "conf.c".

Un atacante local podría ejecutar código arbitrario con los privilegios del usuario "utmp" mediante un argumento "-X" especialmente diseñado.

Solución



Actualización de software

Mandriva

Mandrivalinux 2006
X86
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2006.0/RPMS/libast2-0.6.1-2.1.20060mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2006.0/RPMS/libast2-devel-0.6.1-2.1.20060mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2006.0/SRPMS/libast-0.6.1-2.1.20060mdk.src.rpm
X86_64
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/2006.0/RPMS/lib64ast2-0.6.1-2.1.20060mdk.x86_64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/2006.0/RPMS/lib64ast2-devel-0.6.1-2.1.20060mdk.x86_64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/2006.0/SRPMS/libast-0.6.1-2.1.20060mdk.src.rpm

Debian

Debian Linux 3.0
Source
http://security.debian.org/pool/updates/main/liba/libast1/libast1_0.4-3woody2.dsc
http://security.debian.org/pool/updates/main/liba/libast1/libast1_0.4-3woody2.diff.gz
http://security.debian.org/pool/updates/main/liba/libast1/libast1_0.4.orig.tar.gz
Alpha
http://security.debian.org/pool/updates/main/liba/libast1/libast1_0.4-3woody2_alpha.deb
http://security.debian.org/pool/updates/main/liba/libast1/libast1-dev_0.4-3woody2_alpha.deb
ARM
http://security.debian.org/pool/updates/main/liba/libast1/libast1_0.4-3woody2_arm.deb
http://security.debian.org/pool/updates/main/liba/libast1/libast1-dev_0.4-3woody2_arm.deb
Intel IA-32
http://security.debian.org/pool/updates/main/liba/libast1/libast1_0.4-3woody2_i386.deb
http://security.debian.org/pool/updates/main/liba/libast1/libast1-dev_0.4-3woody2_i386.deb
Intel IA-64
http://security.debian.org/pool/updates/main/liba/libast1/libast1_0.4-3woody2_ia64.deb
http://security.debian.org/pool/updates/main/liba/libast1/libast1-dev_0.4-3woody2_ia64.deb
HP Precision
http://security.debian.org/pool/updates/main/liba/libast1/libast1_0.4-3woody2_hppa.deb
http://security.debian.org/pool/updates/main/liba/libast1/libast1-dev_0.4-3woody2_hppa.deb
Motorola 680x0
http://security.debian.org/pool/updates/main/liba/libast1/libast1_0.4-3woody2_m68k.deb
http://security.debian.org/pool/updates/main/liba/libast1/libast1-dev_0.4-3woody2_m68k.deb
Big endian MIPS
http://security.debian.org/pool/updates/main/liba/libast1/libast1_0.4-3woody2_mips.deb
http://security.debian.org/pool/updates/main/liba/libast1/libast1-dev_0.4-3woody2_mips.deb
Little endian MIPS
http://security.debian.org/pool/updates/main/liba/libast1/libast1_0.4-3woody2_mipsel.deb
http://security.debian.org/pool/updates/main/liba/libast1/libast1-dev_0.4-3woody2_mipsel.deb
PowerPC
http://security.debian.org/pool/updates/main/liba/libast1/libast1_0.4-3woody2_powerpc.deb
http://security.debian.org/pool/updates/main/liba/libast1/libast1-dev_0.4-3woody2_powerpc.deb
IBM S/390
http://security.debian.org/pool/updates/main/liba/libast1/libast1_0.4-3woody2_s390.deb
http://security.debian.org/pool/updates/main/liba/libast1/libast1-dev_0.4-3woody2_s390.deb
Sun Sparc
http://security.debian.org/pool/updates/main/liba/libast1/libast1_0.4-3woody2_sparc.deb
http://security.debian.org/pool/updates/main/liba/libast1/libast1-dev_0.4-3woody2_sparc.deb

Debian Linux 3.1
Source
http://security.debian.org/pool/updates/main/liba/libast/libast_0.6-0pre2003010606sarge1.dsc
http://security.debian.org/pool/updates/main/liba/libast/libast_0.6-0pre2003010606sarge1.tar.gz
Alpha
http://security.debian.org/pool/updates/main/liba/libast/libast2_0.6-0pre2003010606sarge1_alpha.deb
http://security.debian.org/pool/updates/main/liba/libast/libast2-dev_0.6-0pre2003010606sarge1_alpha.deb
AMD64
http://security.debian.org/pool/updates/main/liba/libast/libast2_0.6-0pre2003010606sarge1_amd64.deb
http://security.debian.org/pool/updates/main/liba/libast/libast2-dev_0.6-0pre2003010606sarge1_amd64.deb
ARM
http://security.debian.org/pool/updates/main/liba/libast/libast2_0.6-0pre2003010606sarge1_arm.deb
http://security.debian.org/pool/updates/main/liba/libast/libast2-dev_0.6-0pre2003010606sarge1_arm.deb
Intel IA-32
http://security.debian.org/pool/updates/main/liba/libast/libast2_0.6-0pre2003010606sarge1_i386.deb
http://security.debian.org/pool/updates/main/liba/libast/libast2-dev_0.6-0pre2003010606sarge1_i386.deb
Intel IA-64
http://security.debian.org/pool/updates/main/liba/libast/libast2_0.6-0pre2003010606sarge1_ia64.deb
http://security.debian.org/pool/updates/main/liba/libast/libast2-dev_0.6-0pre2003010606sarge1_ia64.deb
HP Precision
http://security.debian.org/pool/updates/main/liba/libast/libast2_0.6-0pre2003010606sarge1_hppa.deb
http://security.debian.org/pool/updates/main/liba/libast/libast2-dev_0.6-0pre2003010606sarge1_hppa.deb
Motorola 680x0
http://security.debian.org/pool/updates/main/liba/libast/libast2_0.6-0pre2003010606sarge1_m68k.deb
http://security.debian.org/pool/updates/main/liba/libast/libast2-dev_0.6-0pre2003010606sarge1_m68k.deb
Big endian MIPS
http://security.debian.org/pool/updates/main/liba/libast/libast2_0.6-0pre2003010606sarge1_mips.deb
http://security.debian.org/pool/updates/main/liba/libast/libast2-dev_0.6-0pre2003010606sarge1_mips.deb
Little endian MIPS
http://security.debian.org/pool/updates/main/liba/libast/libast2_0.6-0pre2003010606sarge1_mipsel.deb
http://security.debian.org/pool/updates/main/liba/libast/libast2-dev_0.6-0pre2003010606sarge1_mipsel.deb
PowerPC
http://security.debian.org/pool/updates/main/liba/libast/libast2_0.6-0pre2003010606sarge1_powerpc.deb
http://security.debian.org/pool/updates/main/liba/libast/libast2-dev_0.6-0pre2003010606sarge1_powerpc.deb
IBM S/390
http://security.debian.org/pool/updates/main/liba/libast/libast2_0.6-0pre2003010606sarge1_s390.deb
http://security.debian.org/pool/updates/main/liba/libast/libast2-dev_0.6-0pre2003010606sarge1_s390.deb
Sun Sparc
http://security.debian.org/pool/updates/main/liba/libast/libast2_0.6-0pre2003010606sarge1_sparc.deb
http://security.debian.org/pool/updates/main/liba/libast/libast2-dev_0.6-0pre2003010606sarge1_sparc.deb

Identificadores estándar

Propiedad Valor
CVE CVE-2006-0224
BID 16350

Recursos adicionales

Mandriva Security Advisory (MDKSA-2006:029)
http://wwwnew.mandriva.com/security/advisories?name=MDKSA-2006:029

Debian Security Advisory (DSA 976-1)
http://lists.debian.org/debian-security-announce/debian-security-announce-2006/msg00053.html

Histórico de versiones

Versión Comentario Fecha
1.0 Aviso emitido 2006-02-03
1.1 Aviso emitido por Debian (DSA 976-1) 2006-02-16

Miembros de

Ministerio de Defensa
CNI
CCN
CCN-CERT