CVE-2018-12551
Publication date 27 March 2019
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
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.
Status
Package | Ubuntu Release | Status |
---|---|---|
mosquitto | ||
18.04 LTS bionic |
Fixed 1.4.15-2ubuntu0.18.04.1
|
|
16.04 LTS xenial |
Fixed 1.4.8-1ubuntu0.16.04.5
|
|
14.04 LTS trusty |
Not affected
|
Notes
Severity score breakdown
Parameter | Value |
---|---|
Base score | 8.1 · High |
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 |