Vulnerability · Published Dec 1, 2021 · Assigned by eclipse
CVE-2021-41039
High 7.5
In plain English
A high-severity security flaw in Eclipse Mosquitto from The Eclipse Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 72% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.4%top 28.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | mosquitto | 2.0.11-1.2 | DEBIAN-CVE-2021-41039 |
| Debian:13 | mosquitto | 2.0.11-1.2 | DEBIAN-CVE-2021-41039 |
| Debian:14 | mosquitto | 2.0.11-1.2 | DEBIAN-CVE-2021-41039 |
| Ubuntu:22.04:LTS | mosquitto | 2.0.11-1ubuntu1.1 | USN-6492-1 |
| Ubuntu:22.04:LTS | mosquitto | 2.0.11-1ubuntu1.1 | UBUNTU-CVE-2021-41039 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| The Eclipse Foundation | Eclipse Mosquitto | 1.6 – before unspecifiedunspecified – through 2.0.11 |
Weakness: CWE-1050
References
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=575314
- DSA-5511 vendor-advisory