Vulnerability Details : CVE-2021-34431
In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated client that had connected with MQTT v5 sent a crafted CONNECT message to the broker a memory leak would occur, which could be used to provide a DoS attack against the broker.
Vulnerability category: Denial of service
Products affected by CVE-2021-34431
- cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-34431
0.37%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 57 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-34431
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:N/I:N/A:P |
8.0
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2021-34431
-
The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.Assigned by:
- emo@eclipse.org (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2021-34431
-
https://bugs.eclipse.org/bugs/show_bug.cgi?id=573191
573191 – (CVE-2021-34431) Possible DoS through Memory Leak in Mosquitto BrokerMailing List;Vendor Advisory
Jump to