{"action":"Upgrade heimdal to 7.4.0.dfsg.1-1 or later.","affected":[{"fixed":"7.4.0.dfsg.1-1","introduced":"0"}],"component":"heimdal","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["7.4.0.dfsg.1-1"],"id":"tcs_01M5NBXJJK2PM5D8HJQ2XMMCSV","modified_at":"2026-09-01T20:03:41.126427885Z","published_at":"2017-07-13T13:29:00.173Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2017-11103","https://security-tracker.debian.org/tracker/CVE-2017-11103"],"severity":{"label":"high","score":8.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2017-11103#Debian:14/heimdal","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2017-11103"}],"summary":"Heimdal before 7.4 allows remote attackers to impersonate services with Orpheus' Lyre attacks because it obtains service-principal names in a way that violates the Kerberos 5 protocol specification. I"}