{"id":"DEBIAN-CVE-2025-45311","details":"Insecure permissions in fail2ban-client v0.11.2 allows attackers with limited sudo privileges to perform arbitrary operations as root. NOTE: this is disputed by multiple parties because the action for a triggered rule can legitimately be an arbitrary operation as root. Thus, the software is behaving in accordance with its intended privilege model.","modified":"2025-12-02T22:38:30.108560Z","published":"2025-11-26T16:15:47.663Z","withdrawn":"2025-12-02T22:38:30.108560Z","upstream":["CVE-2025-45311"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-45311"}],"affected":[{"package":{"name":"fail2ban","ecosystem":"Debian:11","purl":"pkg:deb/debian/fail2ban?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.11.2-2","0.11.2-3","0.11.2-4","0.11.2-5","0.11.2-6","1.0.1-1~exp1","1.0.2-1","1.0.2-2","1.0.2-3","1.1.0-1","1.1.0-2","1.1.0-3","1.1.0-4","1.1.0-6","1.1.0-7","1.1.0-8"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-45311.json"}},{"package":{"name":"fail2ban","ecosystem":"Debian:12","purl":"pkg:deb/debian/fail2ban?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.2-2","1.0.2-3","1.1.0-1","1.1.0-2","1.1.0-3","1.1.0-4","1.1.0-6","1.1.0-7","1.1.0-8"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-45311.json"}},{"package":{"name":"fail2ban","ecosystem":"Debian:13","purl":"pkg:deb/debian/fail2ban?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.0-8"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-45311.json"}},{"package":{"name":"fail2ban","ecosystem":"Debian:14","purl":"pkg:deb/debian/fail2ban?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.0-8"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-45311.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}