CVE-2018-12551
Published: 27 March 2019
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.
Notes
Author | Note |
---|---|
ebarretto | mosquitto's version on Trusty is EOL. |
Priority
Status
Package | Release | Status |
---|---|---|
mosquitto Launchpad, Ubuntu, Debian |
bionic |
Released
(1.4.15-2ubuntu0.18.04.1)
|
cosmic |
Released
(1.4.15-2ubuntu0.18.10.1)
|
|
disco |
Not vulnerable
(1.5.6-1)
|
|
trusty |
Not vulnerable
|
|
upstream |
Released
(1.5.6)
|
|
xenial |
Released
(1.4.8-1ubuntu0.16.04.5)
|
|
Patches: upstream: https://mosquitto.org/files/cve/2018-12551/ |
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 |