What is CVE-2019-11778?

CVE-2019-11778 is a medium-severity vulnerability in Eclipse Mosquitto, classified under Use After Free. CVSS score: 5.4/10. Published 2019-09-18.

How severe is CVE-2019-11778?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Use After Free in Eclipse Mosquitto

CVE-2019-11778

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.

Vulnerability class: Use-After-Free

EPSS: 0.008 (51.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.

Affected products

Eclipse Mosquitto
The Eclipse Foundation Mosquitto — versions 1.6.0 to 1.6.4

Weakness classification (CWE)

CWE-416 — Use After Free

References

emo@eclipse.org (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2019-11778?: CVE-2019-11778 is a medium-severity vulnerability in Eclipse Mosquitto, classified under Use After Free. CVSS score: 5.4/10. Published 2019-09-18.
How severe is CVE-2019-11778?: Medium severity. CVSS v3 base score is 5.4 out of 10.