{"action":"Upgrade bind9 to 1:9.19.21-1 or later.","affected":[{"fixed":"1:9.19.21-1","introduced":"0"}],"component":"bind9","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:9.19.21-1"],"id":"tcs_01M5NJYBV2VVXZP8PK7NZ401FJ","modified_at":"2026-10-26T18:03:10.638958216Z","published_at":"2024-02-13T14:15:45.510Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2023-5517","https://security-tracker.debian.org/tracker/CVE-2023-5517"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2023-5517#Debian:14/bind9","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2023-5517"}],"summary":"A flaw in query-handling code can cause `named` to exit prematurely with an assertion failure when: - `nxdomain-redirect <domain>;` is configured, and - the resolver receives a PTR query for an RFC 19"}