CVE-2021-34432
Published: 27 July 2021
In Eclipse Mosquitto versions 2.07 and earlier, the server will crash if the client tries to send a PUBLISH packet with topic length = 0.
Notes
| Author | Note |
|---|---|
| gianz |
PoC: https://bugs.eclipse.org/bugs/show_bug.cgi?id=574141 (first message) The CVE indicates versions <= 2.0.7 as affected. However only versions >= 2.0.0 and <= 2.0.7 are vulnerable. No crash detected running the PoC against any previous version we support. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
mosquitto
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code not present)
|
| focal |
Not vulnerable
(code not present)
|
|
| hirsute |
Not vulnerable
(2.0.10-3)
|
|
| impish |
Not vulnerable
|
|
| jammy |
Not vulnerable
(2.0.11-1ubuntu1)
|
|
| kinetic |
Not vulnerable
|
|
| lunar |
Not vulnerable
(2.0.11-1.2)
|
|
| mantic |
Not vulnerable
(2.0.18-1)
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| upstream |
Released
(2.0.8-1)
|
|
| 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 |