The vulnerability of the implementations of DTLS (Datagram Transport Layer Security) and SRTP protocols in Asterisk IP-telephony management systems and Certified Asterisk allows a attacker to induce a service failure.

The vulnerability of DTLS and SRTP protocols for Asterisk IP-telephony systems and Certified Asterisk arises from the behavior of the message processing mechanism during ClientHello messages. Exploiting this vulnerability allows a malicious actor to cause service failures...

The vulnerability of the res_pjsip_t38.c component in Asterisk IP-telephony management systems and Certified Asterisk allows a attacker to cause a service failure.

The vulnerability of the respjsipt38.c component in IP-telephony management systems like Asterisk and Certified Asterisk is related to the handling of the zero pointer. Exploiting this vulnerability could allow a malicious actor to cause service interruptions...