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CVSS: 9.8EPSS: 0%CPEs: 195EXPL: 0

06 Jul 2011 — chan_iax2.c in the IAX2 channel driver in Asterisk Open Source 1.4.x before 1.4.41.1, 1.6.2.x before 1.6.2.18.1, and 1.8.x before 1.8.4.3, and Asterisk Business Edition C.3 before C.3.7.3, accesses a memory address contained in an option control frame, which allows remote attackers to cause a denial of service (daemon crash) or possibly have unspecified other impact via a crafted frame. chan_iax2.c en el controlador de canal IAX2 en Asterisk Open Source v1.4.x anteriores a v1.4.41.1, v1.6.2.x anteriores a v... • http://downloads.asterisk.org/pub/security/AST-2011-010-1.8.diff • CWE-20: Improper Input Validation •

CVSS: 5.3EPSS: 0%CPEs: 198EXPL: 0

06 Jul 2011 — chan_sip.c in the SIP channel driver in Asterisk Open Source 1.4.x before 1.4.41.2, 1.6.2.x before 1.6.2.18.2, and 1.8.x before 1.8.4.4, and Asterisk Business Edition C.3.x before C.3.7.3, disregards the alwaysauthreject option and generates different responses for invalid SIP requests depending on whether the user account exists, which allows remote attackers to enumerate account names via a series of requests. chan_sip.c en el controlador de canal SIP en Asterisk Open Source v1.4.x anteriores a v1.4.41.2,... • http://downloads.asterisk.org/pub/security/AST-2011-011-1.8.diff • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 7.5EPSS: 2%CPEs: 32EXPL: 0

06 Jul 2011 — reqresp_parser.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.4.3 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a SIP packet with a Contact header that lacks a < (less than) character. reqresp_parser.c en el controlador de canal SIP en Asterisk Open Source v1.8.x anteriores a v1.8.4.3 permite a atacantes remotos provocar una denegación de servicio (desreferencia a puntero NULL y caída del demonio) a través de un paquete SIP con una... • http://downloads.asterisk.org/pub/security/AST-2011-009-1.8.diff •

CVSS: 5.3EPSS: 0%CPEs: 158EXPL: 0

06 Jul 2011 — The default configuration of the SIP channel driver in Asterisk Open Source 1.4.x through 1.4.41.2 and 1.6.2.x through 1.6.2.18.2 does not enable the alwaysauthreject option, which allows remote attackers to enumerate account names by making a series of invalid SIP requests and observing the differences in the responses for different usernames, a different vulnerability than CVE-2011-2536. La configuración por defecto del controlador del canal SIP en Asterisk Open Source 1.4.x hasta 1.1.41.2 y 1.6.2.x hasta... • http://downloads.asterisk.org/pub/security/AST-2011-011.html • CWE-16: Configuration •

CVSS: 7.5EPSS: 3%CPEs: 31EXPL: 0

06 Jun 2011 — reqresp_parser.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.4.2 does not initialize certain strings, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a malformed Contact header. reqresp_parser.c del driver del canal SIP en Asterisk Open Source v1.8.x antes de v1.8.4.2 no inicializa ciertas cadenas,lo que permite a atacantes remotos provocar una denegación de servicio ( desreferenciar un puntero NULL y caída de demonio ) a trav... • http://downloads.digium.com/pub/security/AST-2011-007.html •

CVSS: 7.5EPSS: 0%CPEs: 224EXPL: 0

27 Apr 2011 — Asterisk Open Source 1.4.x before 1.4.40.1, 1.6.1.x before 1.6.1.25, 1.6.2.x before 1.6.2.17.3, and 1.8.x before 1.8.3.3 and Asterisk Business Edition C.x.x before C.3.6.4 do not restrict the number of unauthenticated sessions to certain interfaces, which allows remote attackers to cause a denial of service (file descriptor exhaustion and disk space exhaustion) via a series of TCP connections. Asterisk Open Source v1.4.x antes de v1.4.40.1, v1.6.1.x antes de v1.6.1.25, v1.6.2.x antes v1.6.2.17.3, y v1.8.x a... • http://downloads.digium.com/pub/security/AST-2011-005.html • CWE-399: Resource Management Errors •

CVSS: 9.0EPSS: 0%CPEs: 224EXPL: 0

27 Apr 2011 — manager.c in the Manager Interface in Asterisk Open Source 1.4.x before 1.4.40.1, 1.6.1.x before 1.6.1.25, 1.6.2.x before 1.6.2.17.3, and 1.8.x before 1.8.3.3 and Asterisk Business Edition C.x.x before C.3.6.4 does not properly check for the system privilege, which allows remote authenticated users to execute arbitrary commands via an Originate action that has an Async header in conjunction with an Application header. manager.c en la interfaz de administrador de Asterisk Open Source v1.4.x antes de v1.4.40.... • http://downloads.digium.com/pub/security/AST-2011-006.html • CWE-20: Improper Input Validation •

CVSS: 7.5EPSS: 0%CPEs: 97EXPL: 0

31 Mar 2011 — manager.c in Asterisk Open Source 1.6.1.x before 1.6.1.24, 1.6.2.x before 1.6.2.17.2, and 1.8.x before 1.8.3.2 allows remote attackers to cause a denial of service (CPU and memory consumption) via a series of manager sessions involving invalid data. manager.c en Asterisk Open Source v1.6.1.x anterior a v1.6.1.24, v1.6.2.x anterior a v1.6.2.17.2, y v1.8.x anterior a v1.8.3.2 permite a atacantes remotos generar una denegación de servicio (agotamiento de memoria y CPU) mediante una conjunto de sesiones que com... • http://downloads.asterisk.org/pub/security/AST-2011-003.html • CWE-399: Resource Management Errors •

CVSS: 7.5EPSS: 0%CPEs: 94EXPL: 0

31 Mar 2011 — tcptls.c in the TCP/TLS server in Asterisk Open Source 1.6.1.x before 1.6.1.23, 1.6.2.x before 1.6.2.17.1, and 1.8.x before 1.8.3.1 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) by establishing many short TCP sessions to services that use a certain TLS API. tcptls.c en el servidor TCP/TLS en Asterisk Open Source v1.6.1.x anterior a v1.6.1.23, v1.6.2.x anterior a v1.6.2.17.1, y v1.8.x anterior a v1.8.3.1 permite a atacantes remotos causar una denegación de s... • http://downloads.asterisk.org/pub/security/AST-2011-004.html •

CVSS: 9.8EPSS: 2%CPEs: 203EXPL: 0

15 Mar 2011 — Multiple stack-based and heap-based buffer overflows in the (1) decode_open_type and (2) udptl_rx_packet functions in main/udptl.c in Asterisk Open Source 1.4.x before 1.4.39.2, 1.6.1.x before 1.6.1.22, 1.6.2.x before 1.6.2.16.2, and 1.8 before 1.8.2.4; Business Edition C.x.x before C.3.6.3; AsteriskNOW 1.5; and s800i (Asterisk Appliance), when T.38 support is enabled, allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted UDPTL packet. Múltiples desbor... • http://downloads.asterisk.org/pub/security/AST-2011-002.html • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •