Vulnerability · Published Oct 2, 2023 · Assigned by eclipse
CVE-2023-0809
Medium 5.8
In plain English
A medium-severity security flaw in Mosquitto from Eclipse. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.8Medium
Exploit odds (30 days)0.7%top 46.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
In Mosquitto before 2.0.16, excessive memory is allocated based on malicious initial packets that are not CONNECT packets.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | mosquitto | 2.0.16-r0 | ALPINE-CVE-2023-0809 |
| Alpine:v3.21 | mosquitto | 2.0.16-r0 | ALPINE-CVE-2023-0809 |
| Alpine:v3.22 | mosquitto | 2.0.16-r0 | ALPINE-CVE-2023-0809 |
| Alpine:v3.23 | mosquitto | 2.0.16-r0 | ALPINE-CVE-2023-0809 |
| Alpine:v3.24 | mosquitto | 2.0.16-r0 | ALPINE-CVE-2023-0809 |
| Debian:12 | mosquitto | 2.0.11-1.2+deb12u1 | DSA-5511-1 |
| Debian:12 | mosquitto | 2.0.11-1.2+deb12u1 | DEBIAN-CVE-2023-0809 |
| Debian:13 | mosquitto | 2.0.17-1 | DEBIAN-CVE-2023-0809 |
| Debian:14 | mosquitto | 2.0.17-1 | DEBIAN-CVE-2023-0809 |
| Ubuntu:22.04:LTS | mosquitto | 2.0.11-1ubuntu1.1 | UBUNTU-CVE-2023-0809 |
| Ubuntu:22.04:LTS | mosquitto | 2.0.11-1ubuntu1.1 | USN-6492-1 |
Affected products (as reported)
Weakness: CWE-789 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L