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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published: 2019-03-27T17:26:20

Updated: 2024-08-05T08:38:06.296Z

Reserved: 2018-06-18T00:00:00

Link: CVE-2018-12551

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-03-27T18:29:00.367

Modified: 2019-10-09T23:34:04.137

Link: CVE-2018-12551

cve-icon Redhat

No data.