Vulnerability Bulletins |
Denegación de servicio en openSSH |
|
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 | OpenSSH < 4.3p2-9etch3 |
Description |
|
|
Se ha descubierto una vulnerabilidad en OpenSSH 4.3. La vulnerabilidad reside en un error en la implementación del timeout del login. El error fue corregido originalmente en la versión OpenSSH 4.4p1 (CVE-2006-5051) pero el parche para Debian etch era incorrecto. Un atacante remoto podría causar denegación de servicio mediante métodos no especificados. |
|
Solution |
|
|
Actualización de software Debian (DSA 1638-1) Debian Linux 4.0 Source http://security.debian.org/pool/updates/main/o/openssh/openssh_4.3p2-9etch3.diff.gz http://security.debian.org/pool/updates/main/o/openssh/openssh_4.3p2.orig.tar.gz http://security.debian.org/pool/updates/main/o/openssh/openssh_4.3p2-9etch3.dsc Arquitectura independiente http://security.debian.org/pool/updates/main/o/openssh/ssh-krb5_4.3p2-9etch3_all.deb http://security.debian.org/pool/updates/main/o/openssh/ssh_4.3p2-9etch3_all.deb alpha (DEC Alpha) http://security.debian.org/pool/updates/main/o/openssh/openssh-client_4.3p2-9etch3_alpha.deb http://security.debian.org/pool/updates/main/o/openssh/ssh-askpass-gnome_4.3p2-9etch3_alpha.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-server-udeb_4.3p2-9etch3_alpha.udeb http://security.debian.org/pool/updates/main/o/openssh/openssh-server_4.3p2-9etch3_alpha.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-client-udeb_4.3p2-9etch3_alpha.udeb amd64 (AMD x86_64 (AMD64)) http://security.debian.org/pool/updates/main/o/openssh/openssh-client_4.3p2-9etch3_amd64.deb http://security.debian.org/pool/updates/main/o/openssh/ssh-askpass-gnome_4.3p2-9etch3_amd64.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-server-udeb_4.3p2-9etch3_amd64.udeb http://security.debian.org/pool/updates/main/o/openssh/openssh-server_4.3p2-9etch3_amd64.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-client-udeb_4.3p2-9etch3_amd64.udeb arm (ARM) http://security.debian.org/pool/updates/main/o/openssh/openssh-client_4.3p2-9etch3_arm.deb http://security.debian.org/pool/updates/main/o/openssh/ssh-askpass-gnome_4.3p2-9etch3_arm.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-client-udeb_4.3p2-9etch3_arm.udeb http://security.debian.org/pool/updates/main/o/openssh/openssh-server_4.3p2-9etch3_arm.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-server-udeb_4.3p2-9etch3_arm.udeb hppa (HP PA RISC) http://security.debian.org/pool/updates/main/o/openssh/openssh-client_4.3p2-9etch3_hppa.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-client-udeb_4.3p2-9etch3_hppa.udeb http://security.debian.org/pool/updates/main/o/openssh/openssh-server_4.3p2-9etch3_hppa.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-server-udeb_4.3p2-9etch3_hppa.udeb http://security.debian.org/pool/updates/main/o/openssh/ssh-askpass-gnome_4.3p2-9etch3_hppa.deb i386 (Intel ia32) http://security.debian.org/pool/updates/main/o/openssh/ssh-askpass-gnome_4.3p2-9etch3_i386.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-server-udeb_4.3p2-9etch3_i386.udeb http://security.debian.org/pool/updates/main/o/openssh/openssh-server_4.3p2-9etch3_i386.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-client-udeb_4.3p2-9etch3_i386.udeb http://security.debian.org/pool/updates/main/o/openssh/openssh-client_4.3p2-9etch3_i386.deb ia64 (Intel ia64) http://security.debian.org/pool/updates/main/o/openssh/openssh-client_4.3p2-9etch3_ia64.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-server-udeb_4.3p2-9etch3_ia64.udeb http://security.debian.org/pool/updates/main/o/openssh/openssh-server_4.3p2-9etch3_ia64.deb http://security.debian.org/pool/updates/main/o/openssh/ssh-askpass-gnome_4.3p2-9etch3_ia64.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-client-udeb_4.3p2-9etch3_ia64.udeb mips (MIPS (Big Endian)) http://security.debian.org/pool/updates/main/o/openssh/openssh-client_4.3p2-9etch3_mips.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-client-udeb_4.3p2-9etch3_mips.udeb http://security.debian.org/pool/updates/main/o/openssh/openssh-server_4.3p2-9etch3_mips.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-server-udeb_4.3p2-9etch3_mips.udeb http://security.debian.org/pool/updates/main/o/openssh/ssh-askpass-gnome_4.3p2-9etch3_mips.deb powerpc (PowerPC) http://security.debian.org/pool/updates/main/o/openssh/openssh-client-udeb_4.3p2-9etch3_powerpc.udeb http://security.debian.org/pool/updates/main/o/openssh/openssh-server_4.3p2-9etch3_powerpc.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-server-udeb_4.3p2-9etch3_powerpc.udeb http://security.debian.org/pool/updates/main/o/openssh/openssh-client_4.3p2-9etch3_powerpc.deb http://security.debian.org/pool/updates/main/o/openssh/ssh-askpass-gnome_4.3p2-9etch3_powerpc.deb s390 (IBM S/390) http://security.debian.org/pool/updates/main/o/openssh/openssh-server_4.3p2-9etch3_s390.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-client-udeb_4.3p2-9etch3_s390.udeb http://security.debian.org/pool/updates/main/o/openssh/ssh-askpass-gnome_4.3p2-9etch3_s390.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-client_4.3p2-9etch3_s390.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-server-udeb_4.3p2-9etch3_s390.udeb sparc (Sun SPARC/UltraSPARC) http://security.debian.org/pool/updates/main/o/openssh/openssh-client_4.3p2-9etch3_sparc.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-server_4.3p2-9etch3_sparc.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-server-udeb_4.3p2-9etch3_sparc.udeb http://security.debian.org/pool/updates/main/o/openssh/ssh-askpass-gnome_4.3p2-9etch3_sparc.deb http://security.debian.org/pool/updates/main/o/openssh/openssh-client-udeb_4.3p2-9etch3_sparc.udeb Suse Linux Las actualizaciones pueden descargarse mediante YAST o del servidor FTP oficial de Suse Linux. |
|
Standar resources |
|
| Property | Value |
| CVE | CVE-2008-4109 |
| BID | |
Other resources |
|
|
Debian Security Advisory (DSA 1638-1) http://lists.debian.org/debian-security-announce/2008/msg00227.html SUSE Security Advisory (SUSE-SR:2008:020) http://www.novell.com/linux/security/advisories/2008_20_sr.html |
|
Version history |
||
| Version | Comments | Date |
| 1.0 | Aviso emitido | 2008-09-17 |
| 1.1 | Aviso emitido por Suse (SUSE-SR:2008:020) | 2008-10-10 |