Vulnerability · Published Jul 27, 2021 · Assigned by eclipse
CVE-2021-34432
High 7.5
In plain English
A high-severity improper input validation 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 1.2% (higher than 69% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.2%top 30.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
In Eclipse Mosquitto versions 2.0.7 and earlier, the server will crash if the client tries to send a PUBLISH packet with topic length = 0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | mosquitto | 2.0.8-r0 | ALPINE-CVE-2021-34432 |
| Alpine:v3.21 | mosquitto | 2.0.8-r0 | ALPINE-CVE-2021-34432 |
| Alpine:v3.22 | mosquitto | 2.0.8-r0 | ALPINE-CVE-2021-34432 |
| Alpine:v3.23 | mosquitto | 2.0.8-r0 | ALPINE-CVE-2021-34432 |
| Alpine:v3.24 | mosquitto | 2.0.8-r0 | ALPINE-CVE-2021-34432 |
| Debian:12 | mosquitto | 2.0.8-1 | DEBIAN-CVE-2021-34432 |
| Debian:13 | mosquitto | 2.0.8-1 | DEBIAN-CVE-2021-34432 |
| Debian:14 | mosquitto | 2.0.8-1 | DEBIAN-CVE-2021-34432 |
| Ubuntu:22.04:LTS | mosquitto | 2.0.11-1ubuntu1 | UBUNTU-CVE-2021-34432 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| The Eclipse Foundation | Eclipse Mosquitto | unspecified – through 2.0.7 |
Weakness: CWE-20
References
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=574141 x_refsource_CONFIRM