CVE-2020-35776
A buffer overflow in res_pjsip_diversion.c in Sangoma Asterisk versions 13.38.1, 16.15.1, 17.9.1, and 18.1.1 allows remote attacker to crash Asterisk by deliberately misusing SIP 181 responses.
Date published : 2021-02-18
https://downloads.asterisk.org/pub/security/AST-2021-001.html