{"id":"CVE-2018-12551","state":"PUBLISHED","title":"When Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) is configured to use a password file for authentication, any malformed data in the password file will be treated as valid. T","description":"When Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) is configured to use a password file for authentication, any malformed data in the password file will be treated as valid. This typically means that the malformed data becomes a username and no password. If this occurs, clients can circumvent authentication and get access to the broker by using the malformed username. In particular, a blank line will be treated as a valid empty username. Other security measures are unaffected. Users who have only used the mosquitto_passwd utility to create and modify their password files are unaffected by this vulnerability.","publishedAt":"2019-03-27T17:26:20.000Z","updatedAt":"2024-08-05T08:38:06.296Z","severity":null,"assigner":"eclipse","products":["The Eclipse Foundation Eclipse Mosquitto"],"affected":[{"vendor":"The Eclipse Foundation","product":"Eclipse Mosquitto","versions":[{"version":"1.0","status":"affected","lessThan":"unspecified","versionType":"custom"},{"version":"unspecified","status":"affected","lessThanOrEqual":"1.5.5","versionType":"custom"}]}],"references":["https://bugs.eclipse.org/bugs/show_bug.cgi?id=543401","https://lists.debian.org/debian-lts-announce/2019/10/msg00035.html"],"weaknesses":["CWE-703"],"ingestedAt":"2026-10-29T19:44:15.404Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2018/12xxx/CVE-2018-12551.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2018-12551","state":"PUBLISHED","datePublished":"2019-03-27T17:26:20.000Z","dateUpdated":"2024-08-05T08:38:06.296Z","assignerShortName":"eclipse","assignerOrgId":"e51fbebd-6053-4e49-959f-1b94eeb69a2c","dateReserved":"2018-06-18T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"When Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) is configured to use a password file for authentication, any malformed data in the password file will be treated as valid. This typically means that the malformed data becomes a username and no password. If this occurs, clients can circumvent authentication and get access to the broker by using the malformed username. In particular, a blank line will be treated as a valid empty username. Other security measures are unaffected. Users who have only used the mosquitto_passwd utility to create and modify their password files are unaffected by this vulnerability."}],"affected":[{"vendor":"The Eclipse Foundation","product":"Eclipse Mosquitto","versions":[{"version":"1.0","status":"affected","lessThan":"unspecified","versionType":"custom"},{"version":"unspecified","status":"affected","lessThanOrEqual":"1.5.5","versionType":"custom"}]}],"references":[{"url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=543401","tags":["x_refsource_CONFIRM"]},{"url":"https://lists.debian.org/debian-lts-announce/2019/10/msg00035.html","name":"[debian-lts-announce] 20191026 [SECURITY] [DLA 1972-1] mosquitto security update","tags":["mailing-list","x_refsource_MLIST"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-703","description":"CWE-703: Improper Check or Handling of Exceptional Conditions","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"eclipse","dateUpdated":"2019-10-26T23:06:13.000Z","orgId":"e51fbebd-6053-4e49-959f-1b94eeb69a2c"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security@eclipse.org","ID":"CVE-2018-12551","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Eclipse Mosquitto","version":{"version_data":[{"version_affected":">=","version_value":"1.0"},{"version_affected":"<=","version_value":"1.5.5"}]}}]},"vendor_name":"The Eclipse Foundation"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"When Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) is configured to use a password file for authentication, any malformed data in the password file will be treated as valid. 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Users who have only used the mosquitto_passwd utility to create and modify their password files are unaffected by this vulnerability."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-703: Improper Check or Handling of Exceptional Conditions"}]}]},"references":{"reference_data":[{"name":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=543401","refsource":"CONFIRM","url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=543401"},{"name":"[debian-lts-announce] 20191026 [SECURITY] [DLA 1972-1] mosquitto security update","refsource":"MLIST","url":"https://lists.debian.org/debian-lts-announce/2019/10/msg00035.html"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=543401","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2019/10/msg00035.html","name":"[debian-lts-announce] 20191026 [SECURITY] [DLA 1972-1] mosquitto security update","tags":["mailing-list","x_refsource_MLIST","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-05T08:38:06.296Z"}}]}}}