CVE-2017-7650
Publication date 11 September 2017
Last updated 25 August 2025
Ubuntu priority
Description
In Mosquitto before 1.4.12, pattern based ACLs can be bypassed by clients that set their username/client id to '#' or '+'. This allows locally or remotely connected clients to access MQTT topics that they do have the rights to. The same issue may be present in third party authentication/access control plugins for Mosquitto.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| mosquitto | ||
| 16.04 LTS xenial |
Fixed 1.4.8-1ubuntu0.16.04.1
|
|
| 14.04 LTS trusty |
Fixed 0.15-2ubuntu1.1
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
6.5 · Medium
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |