{"action":"Upgrade asterisk to 1:18.12.0~dfsg+~cs6.12.40431413-1 or later.","affected":[{"fixed":"1:18.12.0~dfsg+~cs6.12.40431413-1","introduced":"0"}],"component":"asterisk","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:18.12.0~dfsg+~cs6.12.40431413-1"],"id":"tcs_01M5NG1SWC9N1Z65BNV7YWFZFA","modified_at":"2026-10-23T18:04:16.565427265Z","published_at":"2021-12-27T18:15:07.460Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-43845","https://security-tracker.debian.org/tracker/CVE-2021-43845"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-43845","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-43845"}],"summary":"PJSIP is a free and open source multimedia communication library. In version 2.11.1 and prior, if incoming RTCP XR message contain block, the data field is not checked against the received packet size"}