Gentoo Linux Security Advisory 201811-11 - Multiple vulnerabilities have been found in Asterisk, the worst of which could result in a Denial of Service condition. Versions less than 13.23.1 are affected.
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Asterisk Project Security Advisory - There is a buffer overflow vulnerability in dns_srv and dns_naptr functions of Asterisk that allows an attacker to crash Asterisk via a specially crafted DNS SRV or NAPTR response. The attacker's request causes Asterisk to segfault and crash.
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Asterisk Project Security Advisory - There is a stack overflow vulnerability in the res_http_websocket.so module of Asterisk that allows an attacker to crash Asterisk via a specially crafted HTTP request to upgrade the connection to a websocket. The attacker's request causes Asterisk to run out of stack space and crash.
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