int(1336)

Vulnerability Bulletins


Generación de ficheros con permisos incorrectos en cpio

Vulnerability classification

Property Value
Confidence level Oficial
Impact Integridad
Dificulty Principiante
Required attacker level Acceso remoto con cuenta

System information

Property Value
Affected manufacturer GNU/Linux
Affected software cpio

Description

Se ha descubierto una vulnerabilidad en cpio, un programa que permite archivar ficheros para realizar copias de seguridad. La vulnerabilidad reside en que cpio con las opciones -O y -F utiliza una umask 0 para generar los ficheros de salida con lo que los archivos tienen permisos de lectura y escritura para todo el mundo.

La explotación de esta vulnerabilidad podría permitir a un atacante local leer y escribir en cualquier archivo generado bajo las circunstancias descritas.

Solution



Actualización de software

Debian Linux

Debian Linux 3.0
Source
http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody1.dsc
http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody1.diff.gz
http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2.orig.tar.gz
Alpha
http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody1_alpha.deb
ARM
http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody1_arm.deb
Intel IA-32
http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody1_i386.deb
Intel IA-64
http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody1_ia64.deb
HP Precision
http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody1_hppa.deb
Motorola 680x0
http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody1_m68k.deb
Big endian MIPS
http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody1_mips.deb
Little endian MIPS
http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody1_mipsel.deb
PowerPC
http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody1_powerpc.deb
IBM S/390
http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody1_s390.deb
Sun Sparc
http://security.debian.org/pool/updates/main/c/cpio/cpio_2.4.2-39woody1_sparc.deb

Mandrake Linux

Mandrakelinux 9.2
x86
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/9.2/RPMS/cpio-2.5-4.1.92mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/9.2/SRPMS/cpio-2.5-4.1.92mdk.src.rpm
AMD64
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/9.2/RPMS/cpio-2.5-4.1.92mdk.amd64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/9.2/SRPMS/cpio-2.5-4.1.92mdk.src.rpm

Mandrakelinux 10.0
x86
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.0/RPMS/cpio-2.5-4.1.100mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.0/SRPMS/cpio-2.5-4.1.100mdk.src.rpm
AMD64
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/10.0/RPMS/cpio-2.5-4.1.100mdk.amd64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/10.0/SRPMS/cpio-2.5-4.1.100mdk.src.rpm

Mandrakelinux 10.1
x86
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.1/RPMS/cpio-2.5-4.2.101mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.1/SRPMS/cpio-2.5-4.2.101mdk.src.rpm
X86_64
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/10.1/RPMS/cpio-2.5-4.2.101mdk.x86_64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/10.1/SRPMS/cpio-2.5-4.2.101mdk.src.rpm

Mandrake Corporate Server 2.1
x86
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/2.1/RPMS/cpio-2.5-4.1.C21mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/2.1/SRPMS/cpio-2.5-4.1.C21mdk.src.rpm
X86_64
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/corporate/2.1/RPMS/cpio-2.5-4.1.C21mdk.x86_64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/corporate/2.1/SRPMS/cpio-2.5-4.1.C21mdk.src.rpm

Mandrake Corporate Server 3.0
x86
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/RPMS/cpio-2.5-4.1.C30mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/SRPMS/cpio-2.5-4.1.C30mdk.src.rpm
x86_64
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/corporate/3.0/RPMS/cpio-2.5-4.1.C30mdk.x86_64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/corporate/3.0/SRPMS/cpio-2.5-4.1.C30mdk.src.rpm

Red Hat Linux
Red Hat Desktop (v. 4)
Red Hat Enterprise Linux AS (v. 4)
Red Hat Enterprise Linux ES (v. 4)
Red Hat Enterprise Linux WS (v. 4)
Red Hat Desktop (v. 3)
Red Hat Enterprise Linux AS (v. 3)
Red Hat Enterprise Linux ES (v. 3)
Red Hat Enterprise Linux WS (v. 3)
https://rhn.redhat.com/

Standar resources

Property Value
CVE CAN-1999-1572
BID

Other resources

Debian Security Advisory DSA 664-1
http://lists.debian.org/debian-security-announce/debian-security-announce-2005/msg00042.html

Mandrakesoft Security Advisories MDKSA-2005:032
http://www.mandrakesoft.com/security/advisories?name=MDKSA-2005:032

Mandrakesoft Security Advisories MDKSA-2005:032-1
http://www.mandrakesoft.com/security/advisories?name=MDKSA-2005:032-1

Red Hat Security Advisory RHSA-2005:073-07
https://rhn.redhat.com/errata/RHSA-2005-073.html

Red Hat Security Advisory RHSA-2005:080-06
https://rhn.redhat.com/errata/RHSA-2005-080.html

Version history

Version Comments Date
1.0 Aviso emitido 2005-02-03
1.1 Aviso emitido por Mandrake (MDKSA-2005:032) 2005-02-11
1.2 Aviso actualizado por Mandrake (MDKSA-2005:032-1) 2005-02-14
1.3 Aviso emitido por Red Hat (RHSA-2005:073-07) 2005-02-16
1.4 Aviso emitido por Red Hat (RHSA-2005:080-06) 2005-02-21
Ministerio de Defensa
CNI
CCN
CCN-CERT