An Integer Signedness issue (for a return code) in the respjsipsdp_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.
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-7251.json"