int(1403)

Vulnerability Bulletins


Denegación de servicio en Squid

Vulnerability classification

Property Value
Confidence level Oficial
Impact Denegación de Servicio
Dificulty Experto
Required attacker level Acceso remoto sin cuenta a un servicio estandar

System information

Property Value
Affected manufacturer GNU/Linux
Affected software Squid-2.5.STABLE5 - 2.5.STABLE8

Description

Se ha descubierto una vulnerabilidad en las versiones que van desde la 2.5.STABLE5 a la 2.5.STABLE8 de Squid. La vulnerabilidad reside en el manejo de respuestas DNS cuando la opción log_fqdn está activada.

La explotación de esta vulnerabilidad podría permitir a un atacante remoto provocar una situación de denegación de servicio de Squid mediante el envío de una respuesta DNS especialmente diseñada.

Solution

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

Squid
Squid 2.5.STABLE8 - Parche
http://www.squid-cache.org/Versions/v2/2.5/bugs/squid-2.5.STABLE8-dns_assert.patch

SUSE Linux

SUSE Linux 9.2
x86
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/squid-2.5.STABLE6-6.8.i586.rpm
x86-64
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/squid-2.5.STABLE6-6.8.x86_64.rpm
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/squid-2.5.STABLE6-6.8.src.rpm

SUSE Linux 9.1
x86
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/squid-2.5.STABLE5-42.30.i586.rpm
x86-64
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/squid-2.5.STABLE5-42.30.x86_64.rpm
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/squid-2.5.STABLE5-42.30.src.rpm

SUSE Linux 9.0
x86
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/squid-2.5.STABLE3-120.i586.rpm
x86-64
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/squid-2.5.STABLE3-120.x86_64.rpm
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/squid-2.5.STABLE3-120.src.rpm

SUSE Linux 8.2
x86
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/squid-2.5.STABLE1-108.i586.rpm

Debian Linux

Debian Linux 3.0
Source
http://security.debian.org/pool/updates/main/s/squid/squid_2.4.6-2woody7.dsc
http://security.debian.org/pool/updates/main/s/squid/squid_2.4.6-2woody7.diff.gz
http://security.debian.org/pool/updates/main/s/squid/squid_2.4.6.orig.tar.gz
Alpha
http://security.debian.org/pool/updates/main/s/squid/squid_2.4.6-2woody7_alpha.deb
http://security.debian.org/pool/updates/main/s/squid/squid-cgi_2.4.6-2woody7_alpha.deb
http://security.debian.org/pool/updates/main/s/squid/squidclient_2.4.6-2woody7_alpha.deb
ARM
http://security.debian.org/pool/updates/main/s/squid/squid_2.4.6-2woody7_arm.deb
http://security.debian.org/pool/updates/main/s/squid/squid-cgi_2.4.6-2woody7_arm.deb
http://security.debian.org/pool/updates/main/s/squid/squidclient_2.4.6-2woody7_arm.deb
Intel IA-32
http://security.debian.org/pool/updates/main/s/squid/squid_2.4.6-2woody7_i386.deb
http://security.debian.org/pool/updates/main/s/squid/squid-cgi_2.4.6-2woody7_i386.deb
http://security.debian.org/pool/updates/main/s/squid/squidclient_2.4.6-2woody7_i386.deb
Intel IA-64
http://security.debian.org/pool/updates/main/s/squid/squid_2.4.6-2woody7_ia64.deb
http://security.debian.org/pool/updates/main/s/squid/squid-cgi_2.4.6-2woody7_ia64.deb
http://security.debian.org/pool/updates/main/s/squid/squidclient_2.4.6-2woody7_ia64.deb
HP Precision
http://security.debian.org/pool/updates/main/s/squid/squid_2.4.6-2woody7_hppa.deb
http://security.debian.org/pool/updates/main/s/squid/squid-cgi_2.4.6-2woody7_hppa.deb
http://security.debian.org/pool/updates/main/s/squid/squidclient_2.4.6-2woody7_hppa.deb
Motorola 680x0
http://security.debian.org/pool/updates/main/s/squid/squid_2.4.6-2woody7_m68k.deb
http://security.debian.org/pool/updates/main/s/squid/squid-cgi_2.4.6-2woody7_m68k.deb
http://security.debian.org/pool/updates/main/s/squid/squidclient_2.4.6-2woody7_m68k.deb
Big endian MIPS
http://security.debian.org/pool/updates/main/s/squid/squid_2.4.6-2woody7_mips.deb
http://security.debian.org/pool/updates/main/s/squid/squid-cgi_2.4.6-2woody7_mips.deb
http://security.debian.org/pool/updates/main/s/squid/squidclient_2.4.6-2woody7_mips.deb
Little endian MIPS
http://security.debian.org/pool/updates/main/s/squid/squid_2.4.6-2woody7_mipsel.deb
http://security.debian.org/pool/updates/main/s/squid/squid-cgi_2.4.6-2woody7_mipsel.deb
http://security.debian.org/pool/updates/main/s/squid/squidclient_2.4.6-2woody7_mipsel.deb
PowerPC
http://security.debian.org/pool/updates/main/s/squid/squid_2.4.6-2woody7_powerpc.deb
http://security.debian.org/pool/updates/main/s/squid/squid-cgi_2.4.6-2woody7_powerpc.deb
http://security.debian.org/pool/updates/main/s/squid/squidclient_2.4.6-2woody7_powerpc.deb
IBM S/390
http://security.debian.org/pool/updates/main/s/squid/squid_2.4.6-2woody7_s390.deb
http://security.debian.org/pool/updates/main/s/squid/squid-cgi_2.4.6-2woody7_s390.deb
http://security.debian.org/pool/updates/main/s/squid/squidclient_2.4.6-2woody7_s390.deb
Sun Sparc
http://security.debian.org/pool/updates/main/s/squid/squid_2.4.6-2woody7_sparc.deb
http://security.debian.org/pool/updates/main/s/squid/squid-cgi_2.4.6-2woody7_sparc.deb
http://security.debian.org/pool/updates/main/s/squid/squidclient_2.4.6-2woody7_sparc.deb

Mandrake Linux

Mandrakelinux 9.2
x86
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/9.2/RPMS/squid-2.5.STABLE3-3.7.92mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/9.2/SRPMS/squid-2.5.STABLE3-3.7.92mdk.src.rpm
AMD64
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/9.2/RPMS/squid-2.5.STABLE3-3.7.92mdk.amd64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/9.2/SRPMS/squid-2.5.STABLE3-3.7.92mdk.src.rpm

Mandrakelinux 10.0
x86
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.0/RPMS/squid-2.5.STABLE4-2.5.100mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.0/SRPMS/squid-2.5.STABLE4-2.5.100mdk.src.rpm
AMD64
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/10.0/RPMS/squid-2.5.STABLE4-2.5.100mdk.amd64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/amd64/10.0/SRPMS/squid-2.5.STABLE4-2.5.100mdk.src.rpm

Mandrakelinux 10.1
x86
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.1/RPMS/squid-2.5.STABLE6-2.4.101mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/10.1/SRPMS/squid-2.5.STABLE6-2.4.101mdk.src.rpm
X86_64
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/10.1/RPMS/squid-2.5.STABLE6-2.4.101mdk.x86_64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/10.1/SRPMS/squid-2.5.STABLE6-2.4.101mdk.src.rpm

Corporate Server 2.1
x86
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/2.1/RPMS/squid-2.4.STABLE7-2.5.C21mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/2.1/SRPMS/squid-2.4.STABLE7-2.5.C21mdk.src.rpm
x86_64
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/corporate/2.1/RPMS/squid-2.4.STABLE7-2.5.C21mdk.x86_64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/corporate/2.1/SRPMS/squid-2.4.STABLE7-2.5.C21mdk.src.rpm

Corporate Server 3.0
x86
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/RPMS/squid-2.5.STABLE4-2.5.C30mdk.i586.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/SRPMS/squid-2.5.STABLE4-2.5.C30mdk.src.rpm
X86_64
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/corporate/3.0/RPMS/squid-2.5.STABLE4-2.5.C30mdk.x86_64.rpm
ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/x86_64/corporate/3.0/SRPMS/squid-2.5.STABLE4-2.5.C30mdk.src.rpm

Red Hat Linux
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. 3)
Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor
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)
https://rhn.redhat.com/

Standar resources

Property Value
CVE CAN-2005-0446
BID

Other resources

Squid 2.5.STABLE8 Patches
http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE8-dns_assert

SUSE Security Announcement SUSE-SA:2005:008
http://www.novell.com/linux/security/advisories/2005_08_squid.html

Debian Security Advisory DSA 688-1
http://lists.debian.org/debian-security-announce/debian-security-announce-2005/msg00067.html

Mandrakesoft Security Advisories MDKSA-2005:047
http://www.mandrakesoft.com/security/advisories?name=MDKSA-2005:047

Red Hat Security Advisory RHSA-2005:173-09
https://rhn.redhat.com/errata/RHSA-2005-173.html

Red Hat Security Advisory RHSA-2005:201-07
https://rhn.redhat.com/errata/RHSA-2005-201.html

Version history

Version Comments Date
1.0 Aviso emitido 2005-02-23
1.1 Aviso emitido por Mandrake (MDKSA-2005:047) 2005-02-25
1.2 Aviso emitido por Red Hat (RHSA-2005:173-09) 2005-03-04
1.3 Aviso emitido por Red Hat (RHSA-2005:201-07) 2005-03-17
Ministerio de Defensa
CNI
CCN
CCN-CERT