{"id":"CVE-2021-34431","state":"PUBLISHED","title":"In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated client that had connected with MQTT v5 sent a crafted CONNECT message to the broker a memory leak would occur, which","description":"In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated client that had connected with MQTT v5 sent a crafted CONNECT message to the broker a memory leak would occur, which could be used to provide a DoS attack against the broker.","publishedAt":"2021-07-22T13:45:13.000Z","updatedAt":"2024-08-04T00:12:50.247Z","severity":null,"assigner":"eclipse","products":["The Eclipse Foundation Eclipse Mosquitto"],"affected":[{"vendor":"The Eclipse Foundation","product":"Eclipse Mosquitto","versions":[{"version":"1.6","status":"affected","lessThan":"unspecified","versionType":"custom"},{"version":"unspecified","status":"affected","lessThanOrEqual":"2.0.10","versionType":"custom"}]}],"references":["https://bugs.eclipse.org/bugs/show_bug.cgi?id=573191"],"weaknesses":["CWE-401"],"ingestedAt":"2026-10-29T19:48:38.863Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/34xxx/CVE-2021-34431.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-34431","state":"PUBLISHED","datePublished":"2021-07-22T13:45:13.000Z","dateUpdated":"2024-08-04T00:12:50.247Z","assignerShortName":"eclipse","assignerOrgId":"e51fbebd-6053-4e49-959f-1b94eeb69a2c","dateReserved":"2021-06-09T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated client that had connected with MQTT v5 sent a crafted CONNECT message to the broker a memory leak would occur, which could be used to provide a DoS attack against the broker."}],"affected":[{"vendor":"The Eclipse Foundation","product":"Eclipse Mosquitto","versions":[{"version":"1.6","status":"affected","lessThan":"unspecified","versionType":"custom"},{"version":"unspecified","status":"affected","lessThanOrEqual":"2.0.10","versionType":"custom"}]}],"references":[{"url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=573191","tags":["x_refsource_CONFIRM"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","description":"CWE-401: Missing Release of Memory after Effective Lifetime","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"eclipse","dateUpdated":"2021-07-22T13:45:13.000Z","orgId":"e51fbebd-6053-4e49-959f-1b94eeb69a2c"},"credits":[{"lang":"en","value":"Thanks to Kathrin Kleinhammer of OTARIS Interactive Services GmbH for discovering and reporting this issue."}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security@eclipse.org","ID":"CVE-2021-34431","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Eclipse Mosquitto","version":{"version_data":[{"version_affected":">=","version_value":"1.6"},{"version_affected":"<=","version_value":"2.0.10"}]}}]},"vendor_name":"The Eclipse Foundation"}]}},"credit":[{"lang":"eng","value":"Thanks to Kathrin Kleinhammer of OTARIS Interactive Services GmbH for discovering and reporting this issue."}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated client that had connected with MQTT v5 sent a crafted CONNECT message to the broker a memory leak would occur, which could be used to provide a DoS attack against the broker."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-401: Missing Release of Memory after Effective Lifetime"}]}]},"references":{"reference_data":[{"name":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=573191","refsource":"CONFIRM","url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=573191"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=573191","tags":["x_refsource_CONFIRM","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T00:12:50.247Z"}}]}}}