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CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0

23 May 2019 — asterisk 13.10.0 is affected by: denial of service issues in asterisk. The impact is: cause a denial of service (remote). asterisk versión 13.10.0, se ve afectado por: problemas de Denegación de Servicio en asterisk. El impacto es: provocar una Denegación de Servicio (remota). • http://downloads.asterisk.org/pub/security/AST-2016-006.html • CWE-476: NULL Pointer Dereference •

CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 0

28 Feb 2019 — An Integer Signedness issue (for a return code) in the res_pjsip_sdp_rtp module in Digium Asterisk versions 15.7.1 and earlier and 16.1.1 and earlier allows remote authenticated users to crash Asterisk via a specially crafted SDP protocol violation. Un error en la propiedad signedness de un número entero (para código devuelto) en el módulo res_pjsip_sdp_rtp en Digium Asterisk, en versiones 15.7.1 y anteriores y en las 16.1.1 y anteriores, permite a los atacantes remotos no autenticados cerrar inesperadament... • https://downloads.asterisk.org/pub/security/AST-2019-001.html • CWE-190: Integer Overflow or Wraparound •

CVSS: 7.5EPSS: 0%CPEs: 30EXPL: 1

14 Nov 2018 — Buffer overflow in DNS SRV and NAPTR lookups in Digium Asterisk 15.x before 15.6.2 and 16.x before 16.0.1 allows remote attackers to crash Asterisk via a specially crafted DNS SRV or NAPTR response, because a buffer size is supposed to match an expanded length but actually matches a compressed length. Desbordamiento de búfer en las búsquedas DNS SRV y NAPTR en Digium Asterisk en versiones 15.x anteriores a la 15.6.2 y versiones 16.x anteriores a la 16.0.1 permite que atacantes remotos provoquen el cierre in... • https://downloads.asterisk.org/pub/security/AST-2018-010.html • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 7.5EPSS: 66%CPEs: 33EXPL: 0

20 Sep 2018 — There is a stack consumption vulnerability in the res_http_websocket.so module of Asterisk through 13.23.0, 14.7.x through 14.7.7, and 15.x through 15.6.0 and Certified Asterisk through 13.21-cert2. It allows an attacker to crash Asterisk via a specially crafted HTTP request to upgrade the connection to a websocket. Hay una vulnerabilidad de consumo de pila en el módulo res_http_websocket.so de Asterisk hasta la versión 13.23.0; versiones 14.7.x anteriores a la 14.7.7 y las versiones 15.x anteriores a la 15... • http://downloads.asterisk.org/pub/security/AST-2018-009.html • CWE-400: Uncontrolled Resource Consumption •

CVSS: 5.3EPSS: 5%CPEs: 8EXPL: 0

12 Jun 2018 — An issue was discovered in Asterisk Open Source 13.x before 13.21.1, 14.x before 14.7.7, and 15.x before 15.4.1 and Certified Asterisk 13.18-cert before 13.18-cert4 and 13.21-cert before 13.21-cert2. When endpoint specific ACL rules block a SIP request, they respond with a 403 forbidden. However, if an endpoint is not identified, then a 401 unauthorized response is sent. This vulnerability just discloses which requests hit a defined endpoint. The ACL rules cannot be bypassed to gain access to the disclosed ... • http://downloads.asterisk.org/pub/security/AST-2018-008.html • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 7.5EPSS: 62%CPEs: 7EXPL: 3

22 Feb 2018 — A Buffer Overflow issue was discovered in Asterisk through 13.19.1, 14.x through 14.7.5, and 15.x through 15.2.1, and Certified Asterisk through 13.18-cert2. When processing a SUBSCRIBE request, the res_pjsip_pubsub module stores the accepted formats present in the Accept headers of the request. This code did not limit the number of headers it processed, despite having a fixed limit of 32. If more than 32 Accept headers were present, the code would write outside of its memory and cause a crash. Se ha descub... • https://packetstorm.news/files/id/146577 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 5.9EPSS: 11%CPEs: 14EXPL: 0

22 Feb 2018 — An issue was discovered in res_http_websocket.c in Asterisk 15.x through 15.2.1. If the HTTP server is enabled (default is disabled), WebSocket payloads of size 0 are mishandled (with a busy loop). Se ha descubierto un problema en res_http_websocket.c en Asterisk hasta la versión 15.2.1. Si el servidor HTTP está habilitado (está deshabilitado por defecto), las cargas útiles de WebSocket de tamaño 0 se gestionan de forma incorrecta (con un bucle ocupado). When reading a websocket, the length was not being ch... • http://downloads.digium.com/pub/security/AST-2018-006.html • CWE-754: Improper Check for Unusual or Exceptional Conditions •

CVSS: 6.5EPSS: 34%CPEs: 5EXPL: 2

22 Feb 2018 — An issue was discovered in Asterisk through 13.19.1, 14.x through 14.7.5, and 15.x through 15.2.1, and Certified Asterisk through 13.18-cert2. res_pjsip allows remote authenticated users to crash Asterisk (segmentation fault) by sending a number of SIP INVITE messages on a TCP or TLS connection and then suddenly closing the connection. Se ha descubierto un problema en Asterisk hasta la versión 13.19.1, versiones 14.x hasta la 14.7.5 y versiones 15.x hasta la 15.2.1; así como Certified Asterisk hasta la vers... • https://packetstorm.news/files/id/146580 •

CVSS: 7.5EPSS: 4%CPEs: 1EXPL: 0

21 Feb 2018 — A NULL pointer access issue was discovered in Asterisk 15.x through 15.2.1. The RTP support in Asterisk maintains its own registry of dynamic codecs and desired payload numbers. While an SDP negotiation may result in a codec using a different payload number, these desired ones are still stored internally. When an RTP packet was received, this registry would be consulted if the payload number was not found in the negotiated SDP. This registry was incorrectly consulted for all packets, even those which are dy... • http://downloads.asterisk.org/pub/security/AST-2018-001.html • CWE-476: NULL Pointer Dereference •

CVSS: 7.5EPSS: 91%CPEs: 7EXPL: 0

23 Dec 2017 — An issue was discovered in Asterisk 13.18.4 and older, 14.7.4 and older, 15.1.4 and older, and 13.18-cert1 and older. A select set of SIP messages create a dialog in Asterisk. Those SIP messages must contain a contact header. For those messages, if the header was not present and the PJSIP channel driver was used, Asterisk would crash. The severity of this vulnerability is somewhat mitigated if authentication is enabled. • http://downloads.asterisk.org/pub/security/AST-2017-014.html • CWE-20: Improper Input Validation •