CVE-2019-11778
5.4 · MEDIUMOverview
CVE-2019-11778 is a medium-severity vulnerability affecting eclipse mosquitto. It was published on September 18, 2019 and has a CVSS 3.1 base score of 5.4 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
If an MQTT v5 client connects to Eclipse Mosquitto versions 1.6.0 to 1.6.4 inclusive, sets a last will and testament, sets a will delay interval, sets a session expiry interval, and the will delay interval is set longer than the session expiry interval, then a use after free error occurs, which has the potential to cause a crash in some situations.
Remediation
Check the references section for vendor advisories and patches from eclipse. Update mosquitto to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| eclipse | mosquitto | >= 1.6, < 1.6.5 | Affected |
Frequently Asked Questions
What is CVE-2019-11778?
CVE-2019-11778 is a medium-severity vulnerability affecting eclipse mosquitto. It was published on September 18, 2019 and has a CVSS 3.1 base score of 5.4 (MEDIUM).
How severe is CVE-2019-11778?
This vulnerability has a CVSS 3.1 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2019-11778?
Check the references section for vendor advisories and patches from eclipse. Update mosquitto to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2019-11778?
CyberStrike's AI-powered security agents can automatically detect CVE-2019-11778 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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