Miembros de
Boletines de Vulnerabilidades |
Denegación de servicio en screen |
|
Clasificación de la vulnerabilidad |
|
| Propiedad | Valor |
| Nivel de Confianza | Oficial |
| Impacto | Denegación de Servicio |
| Dificultad | Experto |
| Requerimientos del atacante | Acceso remoto sin cuenta a un servicio exotico |
Información sobre el sistema |
|
| Propiedad | Valor |
| Fabricante afectado | GNU/Linux |
| Software afectado | screen < 4.0.3 |
Descripción |
|
|
Se han descubierto múltiples vulnerabilidades en screen versiones anteriores a 4.0.3. Las vulnerabilidades residen en diversos errores en la función "utf8_handle_comb()" del fichero encoding.c encargado de combinar caracteres utf8. Un atacante remoto podría causar una denegación de servicio a través de ciertas secuencias UTF8. |
|
Solución |
|
|
Actualización de software Mandriva Corporate Server 3.0 X86 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/i586/screen-4.0.2-1.1.C30mdk.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/SRPMS/screen-4.0.2-1.1.C30mdk.src.rpm X86_64 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/x86_64/screen-4.0.2-1.1.C30mdk.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/SRPMS/screen-4.0.2-1.1.C30mdk.src.rpm Mandriva Linux 2006 X86 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2006.0/i586/screen-4.0.2-6.1.20060mdk.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2006.0/SRPMS/screen-4.0.2-6.1.20060mdk.src.rpm X86_64 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2006.0/x86_64/screen-4.0.2-6.1.20060mdk.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2006.0/SRPMS/screen-4.0.2-6.1.20060mdk.src.rpm Mandriva Linux 2007 X86 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/screen-4.0.2-9.1mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/SRPMS/screen-4.0.2-9.1mdv2007.0.src.rpm X86_64 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/screen-4.0.2-9.1mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/SRPMS/screen-4.0.2-9.1mdv2007.0.src.rpm Corporate Server 4.0 X86 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/4.0/i586/screen-4.0.2-6.1.20060mlcs4.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/4.0/SRPMS/screen-4.0.2-6.1.20060mlcs4.src.rpm X86_64 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/4.0/x86_64/screen-4.0.2-6.1.20060mlcs4.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/4.0/SRPMS/screen-4.0.2-6.1.20060mlcs4.src.rpm Debian Debian Linux 3.1 Source http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1.dsc http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1.diff.gz http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2.orig.tar.gz Alpha http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_alpha.deb AMD64 http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_amd64.deb ARM http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_arm.deb HP Precision http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_hppa.deb Intel IA-32 http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_i386.deb Intel IA-64 http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_ia64.deb Motorola 680x0 http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_m68k.deb Big endian MIPS http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_mips.deb Little endian MIPS http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_mipsel.deb PowerPC http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_powerpc.deb IBM S/390 http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_s390.deb Apple Mac OS X (Universal) http://www.apple.com/support/downloads/securityupdate2007005universal.html Mac OS X (PPC) http://www.apple.com/support/downloads/securityupdate2007005ppc.html Mac OS X (Server) http://www.apple.com/support/downloads/securityupdate20070051039server.html Mac OS X (Client) http://www.apple.com/support/downloads/securityupdate20070051039client.html |
|
Identificadores estándar |
|
| Propiedad | Valor |
| CVE | CVE-2006-4573 |
| BID | 20727 |
Recursos adicionales |
|
|
Mandriva Security Advisory (MDKSA-2006:191) http://www.mandriva.com/security/advisories?name=MDKSA-2006:191 Debian Security Advisory (DSA 1202-1) http://lists.debian.org/debian-security-announce/debian-security-announce-2006/msg00298.html Apple Security Update (305530) http://docs.info.apple.com/article.html?artnum=305530 |
|
Histórico de versiones |
||
| Versión | Comentario | Fecha |
| 1.0 | Aviso emitido | 2006-10-30 |
| 1.1 | Aviso emitido por Debian (DSA 1202-1) | 2006-11-02 |
| 1.2 | Aviso emitido por Apple (305530) | 2007-05-29 |