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CVSS: 7.5EPSS: 97%CPEs: 8EXPL: 3

Multiple buffer overflows in Asterisk Open Source 1.4.x before 1.4.18.1 and 1.4.19-rc3, Open Source 1.6.x before 1.6.0-beta6, Business Edition C.x.x before C.1.6.1, AsteriskNOW 1.0.x before 1.0.2, Appliance Developer Kit before 1.4 revision 109386, and s800i 1.1.x before 1.1.0.2 allow remote attackers to (1) write a zero to an arbitrary memory location via a large RTP payload number, related to the ast_rtp_unset_m_type function in main/rtp.c; or (2) write certain integers to an arbitrary memory location via a large number of RTP payloads, related to the process_sdp function in channels/chan_sip.c. Múltiples desbordamientos de búfer en Asterisk Open Source 1.4.x antes de 1.4.18.1 y 1.4.19-rc3, Open Source 1.6.x antes de 1.6.0-beta6, Business Edition C.x.x antes de C.1.6.1, AsteriskNOW 1.0.x antes de 1.0.2, Appliance Developer Kit antes de 1.4 revisión 109386 y s800i 1.1.x antes de 1.1.0.2 permite a atacantes remotos (1) escribir un cero en una posición de memoria de su elección a través de un número de carga útil (payload) RTP grande, relacionada con la función ast_rtp_unset_m_type en main/rtp.c; o (2) escribir ciertos enteros en una posición de memoria de su elección a través de un número grande de cargas útiles RTP, relacionadas con la función process_sdp en channels/chan_sip.c. • https://www.exploit-db.com/exploits/31440 http://downloads.digium.com/pub/security/AST-2008-002.html http://labs.musecurity.com/advisories/MU-200803-01.txt http://secunia.com/advisories/29426 http://secunia.com/advisories/29470 http://securityreason.com/securityalert/3763 http://securitytracker.com/id?1019628 http://www.asterisk.org/node/48466 http://www.securityfocus.com/archive/1/489817/100/0/threaded http://www.securityfocus.com/bid/28308 http://www.vupen.com/english&#x • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 4.3EPSS: 3%CPEs: 46EXPL: 0

Asterisk Open Source 1.2.x before 1.2.26 and 1.4.x before 1.4.16, and Business Edition B.x.x before B.2.3.6 and C.x.x before C.1.0-beta8, when using database-based registrations ("realtime") and host-based authentication, does not check the IP address when the username is correct and there is no password, which allows remote attackers to bypass authentication using a valid username. Asterisk Open Source 1.2.x anterior a 1.2.26 y 1.4.x anterior a 1.4.16, y Business Edition B.x.x anterior a B.2.3.6 y C.x.x anterior a C.1.0-beta8, cuando usa registros basados en base de datos (en tiempo real o "realtime") y autenticación basada en anfitrión (host-based), no comprueba la dirección IP cuando el nombre de usuario es correcto y no hay contraseña, lo cual permite a atacantes remotos evitar la autenticación usando un nombre de usuario válido. • http://downloads.digium.com/pub/security/AST-2007-027.html http://lists.opensuse.org/opensuse-security-announce/2008-03/msg00001.html http://secunia.com/advisories/28149 http://secunia.com/advisories/29242 http://secunia.com/advisories/29456 http://secunia.com/advisories/29782 http://security.gentoo.org/glsa/glsa-200804-13.xml http://securityreason.com/securityalert/3467 http://www.debian.org/security/2008/dsa-1525 http://www.osvdb.org/39519 http://www.securityfocus.com/arch • CWE-287: Improper Authentication •