Vulnerability Details : CVE-2021-41039
Potential exploit
In versions 1.6 to 2.0.11 of Eclipse Mosquitto, an MQTT v5 client connecting with a large number of user-property properties could cause excessive CPU usage, leading to a loss of performance and possible denial of service.
Vulnerability category: Denial of service
Products affected by CVE-2021-41039
- cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-41039
0.21%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 41 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-41039
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-41039
-
The product has a loop body or loop condition that contains a control element that directly or indirectly consumes platform resources, e.g. messaging, sessions, locks, or file descriptors.Assigned by: emo@eclipse.org (Secondary)
References for CVE-2021-41039
-
https://bugs.eclipse.org/bugs/show_bug.cgi?id=575314
575314 – (CVE-2021-41039) Possible DoS Attack caused by unlimited number of "user properties" in Mosquitto BrokerExploit;Issue Tracking;Patch;Vendor Advisory
-
https://www.debian.org/security/2023/dsa-5511
Debian -- Security Information -- DSA-5511-1 mosquitto
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