CVE-2023-5632
Published: 18 October 2023
In Eclipse Mosquito before and including 2.0.5, establishing a connection to the mosquitto server without sending data causes the EPOLLOUT event to be added, which results excessive CPU consumption. This could be used by a malicious actor to perform denial of service type attack. This issue is fixed in 2.0.6
Notes
| Author | Note |
|---|---|
| gianz | Tested in Focal and below. Unable to reproduce the bug. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
mosquitto Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code-not-present)
|
| focal |
Not vulnerable
(code-not-present)
|
|
| jammy |
Not vulnerable
(2.0.11-1ubuntu1)
|
|
| lunar |
Not vulnerable
(2.0.11-1.2)
|
|
| mantic |
Not vulnerable
(2.0.18-1)
|
|
| trusty |
Not vulnerable
(code-not-present)
|
|
| upstream |
Released
(2.0.6)
|
|
| xenial |
Not vulnerable
(code-not-present)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |