{"id":"CVE-2006-1206","aliases":["DEBIAN-CVE-2006-1206","EUVD-2006-1210","GHSA-6979-j27r-h7g9"],"status":"published","title":"Matt Johnston Dropbear SSH server 0.47 and earlier, as used in embedded Linux devices and on...","description":"Matt Johnston Dropbear SSH server 0.47 and earlier, as used in embedded Linux devices and on general-purpose operating systems, allows remote attackers to cause a denial of service (connection slot exhaustion) via a large number of connection attempts that exceeds the MAX_UNAUTH_CLIENTS defined value of 30.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.11671,"percentile":0.96083,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"published":"2006-03-14T01:00:00Z","modified":"2026-10-22T23:47:32Z","exploits":[{"source":"exploitdb","id":"EDB-1572","title":"Dropbear / OpenSSH Server - 'MAX_UNAUTH_CLIENTS' Denial of Service","type":"dos","platform":"multiple","date":"2006-03-10","verified":true,"url":"https://www.exploit-db.com/exploits/1572"}],"fixes":[{"ecosystem":"Debian:12","package":"dropbear","fixed_in":["0.48-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"dropbear","fixed_in":["0.48-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"dropbear","fixed_in":["0.48-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"dropbear","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.48-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"dropbear","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.48-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"dropbear","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.48-1"}]}]}],"products":[{"vendor":"dropbear_ssh_project","product":"dropbear_ssh"}],"references":[{"url":"http://www.securityfocus.com/archive/1/426999/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","web"]},{"url":"http://www.securityfocus.com/bid/17024","tags":["vdb-entry","x_refsource_BID","x_transferred","Patch","Third Party Advisory","VDB Entry","advisory","fix"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/25075","tags":["vdb-entry","x_refsource_XF","x_transferred","VDB Entry","advisory"]},{"url":"http://securitytracker.com/id?1015742","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2006-1206"},{"url":"https://github.com/advisories/GHSA-6979-j27r-h7g9"},{"url":"https://security-tracker.debian.org/tracker/CVE-2006-1206","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2006-1206","description":"Matt Johnston Dropbear SSH server 0.47 and earlier, as used in embedded Linux devices and on general-purpose operating systems, allows remote attackers to cause a denial of service (connection slot exhaustion) via a large number of connection attempts that exceeds the MAX_UNAUTH_CLIENTS defined value of 30.","status":"published","published":"2006-03-14T01:00:00Z","modified":"2024-08-07T17:03:28.554Z","updated_at":"2026-11-02T14:33:51.835276Z"}],"euvd":[{"id":"EUVD-2006-1210","description":"Matt Johnston Dropbear SSH server 0.47 and earlier, as used in embedded Linux devices and on general-purpose operating systems, allows remote attackers to cause a denial of service (connection slot exhaustion) via a large number of connection attempts that exceeds the MAX_UNAUTH_CLIENTS defined value of 30.","status":"published","published":"2006-03-14T01:00:00Z","modified":"2024-08-07T17:03:28Z","updated_at":"2026-11-03T01:16:06.330396Z"}],"ghsa":[{"id":"GHSA-6979-j27r-h7g9","title":"Matt Johnston Dropbear SSH server 0.47 and earlier, as used in embedded Linux devices and on...","description":"Matt Johnston Dropbear SSH server 0.47 and earlier, as used in embedded Linux devices and on general-purpose operating systems, allows remote attackers to cause a denial of service (connection slot exhaustion) via a large number of connection attempts that exceeds the MAX_UNAUTH_CLIENTS defined value of 30.","status":"published","published":"2022-05-01T06:47:07Z","modified":"2023-01-31T05:00:54Z","updated_at":"2026-11-02T14:47:57.136378Z"}],"nvd":[{"id":"CVE-2006-1206","description":"Matt Johnston Dropbear SSH server 0.47 and earlier, as used in embedded Linux devices and on general-purpose operating systems, allows remote attackers to cause a denial of service (connection slot exhaustion) via a large number of connection attempts that exceeds the MAX_UNAUTH_CLIENTS defined value of 30.","status":"published","published":"2006-03-14T01:06:00Z","modified":"2026-06-16T22:22:13.093Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:01:01.776256Z"}],"osv":[{"id":"CVE-2006-1206","description":"Matt Johnston Dropbear SSH server 0.47 and earlier, as used in embedded Linux devices and on general-purpose operating systems, allows remote attackers to cause a denial of service (connection slot exhaustion) via a large number of connection attempts that exceeds the MAX_UNAUTH_CLIENTS defined value of 30.","status":"published","published":"2006-03-14T01:06:00Z","modified":"2026-04-10T03:38:22.15891Z","updated_at":"2026-11-02T15:43:56.581247Z"},{"id":"DEBIAN-CVE-2006-1206","description":"Matt Johnston Dropbear SSH server 0.47 and earlier, as used in embedded Linux devices and on general-purpose operating systems, allows remote attackers to cause a denial of service (connection slot exhaustion) via a large number of connection attempts that exceeds the MAX_UNAUTH_CLIENTS defined value of 30.","status":"published","published":"2006-03-14T01:06:00Z","modified":"2026-10-22T23:47:32.395588405Z","updated_at":"2026-11-02T15:45:22.831407Z"}]}}