{"id":"CVE-2017-7653","aliases":["DEBIAN-CVE-2017-7653","DLA-1525-1","DSA-4325-1","EUVD-2017-16658","GHSA-9xf7-gm92-xr5m","UBUNTU-CVE-2017-7653","USN-4023-1"],"status":"published","title":"The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF...","description":"The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF-8. A malicious client could cause other clients that do reject invalid UTF-8 strings to disconnect themselves from the broker by sending a topic string which is not valid UTF-8, and so cause a denial of service for the clients.","severity":{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-06","score":0.01444,"percentile":0.73382,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2018-06-05T00:00:00Z","modified":"2026-10-24T10:30:24Z","fixes":[{"ecosystem":"Debian:12","package":"mosquitto","fixed_in":["1.5.4-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"mosquitto","fixed_in":["1.5.4-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"mosquitto","fixed_in":["1.5.4-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:16.04:LTS","package":"mosquitto","fixed_in":["1.4.8-1ubuntu0.16.04.7"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"mosquitto","fixed_in":["1.4.15-2ubuntu0.18.04.3"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.4-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.4-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.4-1"}]}]},{"source":"osv","ecosystem":"Debian:8","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.4-2+deb8u3"}]}],"versions":["1.3.4-2","1.3.4-2+deb8u1","1.3.4-2+deb8u2"],"bundled":3},{"source":"osv","ecosystem":"Debian:9","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.10-3+deb9u2"}]}],"versions":["1.4.10-3","1.4.10-3+deb9u1"],"bundled":4},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.15-2ubuntu1","0.15-2ubuntu1.1","0.15-2ubuntu1.2","0.15-2+deb7u3ubuntu0.1","0.15-2+deb7u3ubuntu0.1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.8-1ubuntu0.16.04.7"}]}],"versions":["1.4.3-1","1.4.4-1","1.4.7-1","1.4.8-1","1.4.8-1build1","1.4.8-1ubuntu0.16.04.1","1.4.8-1ubuntu0.16.04.2","1.4.8-1ubuntu0.16.04.3","1.4.8-1ubuntu0.16.04.4","1.4.8-1ubuntu0.16.04.5","1.4.8-1ubuntu0.16.04.6"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.15-2ubuntu0.18.04.3"}]}],"versions":["1.4.12-1","1.4.14-1","1.4.14-2","1.4.14-2build1","1.4.15-1","1.4.15-2","1.4.15-2ubuntu0.18.04.1","1.4.15-2ubuntu0.18.04.2"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.8-1ubuntu0.16.04.7"}]}],"versions":["1.4.3-1","1.4.4-1","1.4.7-1","1.4.8-1","1.4.8-1build1","1.4.8-1ubuntu0.16.04.1","1.4.8-1ubuntu0.16.04.2","1.4.8-1ubuntu0.16.04.3","1.4.8-1ubuntu0.16.04.4","1.4.8-1ubuntu0.16.04.5","1.4.8-1ubuntu0.16.04.6"],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"mosquitto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.15-2ubuntu0.18.04.3"}]}],"versions":["1.4.12-1","1.4.14-1","1.4.14-2","1.4.14-2build1","1.4.15-1","1.4.15-2","1.4.15-2ubuntu0.18.04.1","1.4.15-2ubuntu0.18.04.2"],"bundled":2}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"eclipse","product":"mosquitto"},{"vendor":"the eclipse foundation","product":"eclipse mosquitto"}],"references":[{"url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=532113","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Third Party Advisory","report"]},{"url":"http://docs.oasis-open.org/mqtt/disallowed-chars/v1.0/disallowed-chars-v1.0.pdf","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2018/09/msg00036.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://www.debian.org/security/2018/dsa-4325","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory"]},{"url":"https://usn.ubuntu.com/4023-1/","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-7653"},{"url":"https://github.com/advisories/GHSA-9xf7-gm92-xr5m"},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-7653","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2017-7653","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-4023-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-7653","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-7654","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2017-7653","description":"The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF-8. A malicious client could cause other clients that do reject invalid UTF-8 strings to disconnect themselves from the broker by sending a topic string which is not valid UTF-8, and so cause a denial of service for the clients.","status":"published","published":"2018-06-05T20:00:00Z","modified":"2024-08-05T16:12:27.869Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:33:20.488433Z"}],"euvd":[{"id":"EUVD-2017-16658","description":"The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF-8. A malicious client could cause other clients that do reject invalid UTF-8 strings to disconnect themselves from the broker by sending a topic string which is not valid UTF-8, and so cause a denial of service for the clients.","status":"published","published":"2018-06-05T20:00:00Z","modified":"2024-08-05T16:12:27Z","updated_at":"2026-11-03T02:39:07.559484Z"}],"ghsa":[{"id":"GHSA-9xf7-gm92-xr5m","title":"The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF...","description":"The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF-8. A malicious client could cause other clients that do reject invalid UTF-8 strings to disconnect themselves from the broker by sending a topic string which is not valid UTF-8, and so cause a denial of service for the clients.","status":"published","published":"2022-05-14T00:57:48Z","modified":"2023-02-02T05:02:40Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:51:29.373702Z"}],"nvd":[{"id":"CVE-2017-7653","description":"The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF-8. A malicious client could cause other clients that do reject invalid UTF-8 strings to disconnect themselves from the broker by sending a topic string which is not valid UTF-8, and so cause a denial of service for the clients.","status":"published","published":"2018-06-05T20:29:00.293Z","modified":"2026-06-17T01:24:53.55Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:N/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:04:17.638656Z"}],"osv":[{"id":"CVE-2017-7653","description":"The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF-8. A malicious client could cause other clients that do reject invalid UTF-8 strings to disconnect themselves from the broker by sending a topic string which is not valid UTF-8, and so cause a denial of service for the clients.","status":"published","published":"2018-06-05T20:29:00.293Z","modified":"2026-10-24T10:30:24.995187534Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:06.412595Z"},{"id":"DEBIAN-CVE-2017-7653","description":"The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF-8. A malicious client could cause other clients that do reject invalid UTF-8 strings to disconnect themselves from the broker by sending a topic string which is not valid UTF-8, and so cause a denial of service for the clients.","status":"published","published":"2018-06-05T20:29:00.293Z","modified":"2026-09-01T20:03:50.332392993Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:29.698576Z"},{"id":"UBUNTU-CVE-2017-7653","description":"The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF-8. A malicious client could cause other clients that do reject invalid UTF-8 strings to disconnect themselves from the broker by sending a topic string which is not valid UTF-8, and so cause a denial of service for the clients.","status":"published","published":"2018-06-05T00:00:00Z","modified":"2026-04-22T11:31:59.660339Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:15.773974Z"},{"id":"DLA-1525-1","title":"mosquitto - security update","status":"published","published":"2018-09-28T00:00:00Z","modified":"2026-03-09T01:01:17.590243Z","updated_at":"2026-11-02T15:46:09.777694Z"},{"id":"DSA-4325-1","title":"mosquitto - security update","status":"published","published":"2018-10-25T00:00:00Z","modified":"2026-03-09T02:08:44.906055Z","updated_at":"2026-11-02T15:46:16.862196Z"},{"id":"USN-4023-1","title":"mosquitto vulnerabilities","description":"It was discovered that Mosquitto broker incorrectly handled certain specially\ncrafted input and network packets. A remote attacker could use this to cause a\ndenial of service.\n","status":"published","published":"2019-06-20T13:31:40Z","modified":"2026-04-27T15:27:00.594409Z","updated_at":"2026-11-02T16:58:14.019824Z"}]}}