{"id":"CVE-2016-8652","aliases":["DEBIAN-CVE-2016-8652","EUVD-2016-9491","GHSA-vm4w-qxvr-6wfp"],"status":"published","title":"The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote...","description":"The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting authentication without setting a username.","severity":{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-06","score":0.48197,"percentile":0.98868,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2017-02-16T18:00:00Z","modified":"2026-10-24T10:30:31Z","fixes":[{"ecosystem":"Debian:12","package":"dovecot","fixed_in":["1:2.2.27-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"dovecot","fixed_in":["1:2.2.27-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"dovecot","fixed_in":["1:2.2.27-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"dovecot","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.2.27-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"dovecot","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.2.27-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"dovecot","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.2.27-1"}]}]}],"products":[{"vendor":"dovecot","product":"dovecot"}],"references":[{"url":"http://www.securityfocus.com/bid/94639","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2016/12/02/4","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"http://dovecot.org/pipermail/dovecot-news/2016-December/000333.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Release Notes","Vendor Advisory","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2016/12/05/12","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-8652"},{"url":"https://github.com/advisories/GHSA-vm4w-qxvr-6wfp"},{"url":"https://security-tracker.debian.org/tracker/CVE-2016-8652","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2016-8652","description":"The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting authentication without setting a username.","status":"published","published":"2017-02-16T18:00:00Z","modified":"2024-08-06T02:27:41.255Z","updated_at":"2026-11-02T14:33:32.724067Z"}],"euvd":[{"id":"EUVD-2016-9491","description":"The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting authentication without setting a username.","status":"published","published":"2017-02-16T18:00:00Z","modified":"2024-08-06T02:27:41Z","updated_at":"2026-11-03T02:22:29.639634Z"}],"ghsa":[{"id":"GHSA-vm4w-qxvr-6wfp","title":"The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote...","description":"The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting authentication without setting a username.","status":"published","published":"2022-05-17T02:58:01Z","modified":"2023-01-27T05:06:18Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:42:53.481756Z"}],"nvd":[{"id":"CVE-2016-8652","description":"The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting authentication without setting a username.","status":"published","published":"2017-02-17T02:59:13.547Z","modified":"2026-06-17T00:54:44.927Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:03:35.822579Z"}],"osv":[{"id":"CVE-2016-8652","description":"The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting authentication without setting a username.","status":"published","published":"2017-02-17T02:59:13.547Z","modified":"2026-10-24T10:30:31.635092507Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:03.171316Z"},{"id":"DEBIAN-CVE-2016-8652","description":"The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting authentication without setting a username.","status":"published","published":"2017-02-17T02:59:13.547Z","modified":"2026-09-22T07:02:16.754951272Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:28.207321Z"}]}}