CVE-2018-12551
Published: August 31, 2023Last modified: August 31, 2023
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.
Severity score breakdown
Parameter | Value |
---|---|
Base score | 8.1 |
Attack Vector | NETWORK |
Attack complexity | HIGH |
Privileges required | NONE |
User interaction | NONE |
Scope | UNCHANGED |
Confidentiality | HIGH |
Integrity impact | HIGH |
Availability impact | HIGH |
Vector | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Status
Product | Release | Package | Status |
---|---|---|---|
Alpaquita Linux | 23 LTS | mosquitto | Not affected (2.0.15-r1) |
Stream | mosquitto | Not affected (2.0.17-r0) |