Vulnerability Bulletins |
Denegación de servicio en Asterisk |
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Vulnerability classification |
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| Property | Value |
| Confidence level | Oficial |
| Impact | Denegación de Servicio |
| Dificulty | Principiante |
| Required attacker level | Acceso remoto sin cuenta a un servicio estandar |
System information |
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| Property | Value |
| Affected manufacturer | Comercial Software |
| Affected software |
Asterisk Open Source 1.0.x Asterisk Open Source 1.2.x < 1.2.28 Asterisk Open Source 1.4.x < 1.4.19.1 Asterisk Business Edition A.x.x Asterisk Business Edition B.x.x < B.2.5.2 Asterisk Business Edition C.x.x < C.1.8.1 AsteriskNOW < 1.0.3 Asterisk Appliance Developer Kit 0.x.x Asterisk Appliance s800i < 1.1.0.3 |
Description |
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Se ha encontrado una vulnerabilidad en Asterisk Open Source 1.0.x, 1.2.x en versiones anteriores a la 1.2.28, y 1.4.x en versiones anteriores a la 1.4.19.1; Asterisk Business Edition A.x.x, B.x.x en versiones anteriores a la B.2.5.2, y C.x.x en versiones anteriores a la C.1.8.1; AsteriskNOW en versiones anteriores a la 1.0.3; Asterisk Appliance Developer Kit 0.x.x; y Asterisk Appliance s800i en versiones anteriores a la 1.1.0.3. La vulnerabilidad reside en un error en la validación de respuestas ACK durante los "handshakes" del protocolo IAX2. Un atacante remoto podría causar una denegación de servicio mediante una respuesta ACK falseada especialmente diseñada. Existe un exploit público disponible. |
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Solution |
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Actualización de software Debian (DSA-1563-1) Debian Linux 4.0 Source http://security.debian.org/pool/updates/main/a/asterisk/asterisk_1.2.13~dfsg-2etch4.dsc http://security.debian.org/pool/updates/main/a/asterisk/asterisk_1.2.13~dfsg.orig.tar.gz http://security.debian.org/pool/updates/main/a/asterisk/asterisk_1.2.13~dfsg-2etch4.diff.gz Arquitectura independiente http://security.debian.org/pool/updates/main/a/asterisk/asterisk-doc_1.2.13~dfsg-2etch4_all.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-web-vmail_1.2.13~dfsg-2etch4_all.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-config_1.2.13~dfsg-2etch4_all.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-sounds-main_1.2.13~dfsg-2etch4_all.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk_1.2.13~dfsg-2etch4_all.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-dev_1.2.13~dfsg-2etch4_all.deb alpha (DEC Alpha) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch4_alpha.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch4_alpha.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch4_alpha.deb amd64 (AMD x86_64 (AMD64)) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch4_amd64.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch4_amd64.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch4_amd64.deb arm (ARM) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch4_arm.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch4_arm.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch4_arm.deb hppa (HP PA RISC) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch4_hppa.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch4_hppa.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch4_hppa.deb i386 (Intel ia32) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch4_i386.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch4_i386.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch4_i386.deb ia64 (Intel ia64) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch4_ia64.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch4_ia64.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch4_ia64.deb mips (MIPS (Big Endian)) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch4_mips.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch4_mips.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch4_mips.deb mipsel (MIPS (Little Endian)) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch4_mipsel.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch4_mipsel.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch4_mipsel.deb powerpc (PowerPC) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch4_powerpc.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch4_powerpc.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch4_powerpc.deb s390 (IBM S/390) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch4_s390.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch4_s390.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch4_s390.deb sparc (Sun SPARC/UltraSPARC) http://security.debian.org/pool/updates/main/a/asterisk/asterisk-classic_1.2.13~dfsg-2etch4_sparc.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-bristuff_1.2.13~dfsg-2etch4_sparc.deb http://security.debian.org/pool/updates/main/a/asterisk/asterisk-h323_1.2.13~dfsg-2etch4_sparc.deb |
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Standar resources |
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| Property | Value |
| CVE | CVE-2008-1897 |
| BID | |
Other resources |
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Asterisk Project Security Advisory - AST-2008-006 http://downloads.digium.com/pub/security/AST-2008-006.html Debian Security Advisory (DSA-1563-1) http://lists.debian.org/debian-security-announce/2008/msg00137.html |
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Version history |
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| Version | Comments | Date |
| 1.0 | Aviso emitido | 2008-05-08 |