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CVSS: 7.5EPSS: 78%CPEs: 7EXPL: 1

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 descubierto un problema de desbordamiento de búfer en Asterisk hasta la versión 13.19.1; versiones 14.x anteriores a la 14.7.5 y las versiones 15.x anteriores a la 15.2.1, así como Certified Asterisk hasta la versión 13.18-cert2. • https://www.exploit-db.com/exploits/44184 http://downloads.asterisk.org/pub/security/AST-2018-004.html http://www.securityfocus.com/bid/103151 http://www.securitytracker.com/id/1040416 https://www.debian.org/security/2018/dsa-4320 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 6.5EPSS: 20%CPEs: 5EXPL: 1

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 versión 13.18-cert2. res_pjsip permite que usuarios remotos autenticados provoquen el cierre inesperado de Asterisk (fallo de segmentación) mediante el envío de mensajes SIP INVITE en una conexión TCP o TLS para después cerrar la conexión repentinamente. Asterisk running chan_pjsip suffers from an INVITE message denial of service vulnerability. Versions affected include Versions affected include 15.2.0, 15.1.0, 15.0.0, 13.19.0, 13.11.2, and 14.7.5. • https://www.exploit-db.com/exploits/44181 http://downloads.asterisk.org/pub/security/AST-2018-005.html http://www.securityfocus.com/bid/103129 http://www.securitytracker.com/id/1040417 https://issues.asterisk.org/jira/browse/ASTERISK-27618 https://www.debian.org/security/2018/dsa-4320 •