CVE-2017-7653

libmosquitto1: The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF-8

CVE-2017-7653 is fixed in 4 products on 1 platform, first by libmosquitto1 1.4.15-2ubuntu0.18.04.3, released June 4, 2018. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
n/a
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0144
73rd percentile

The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF-8. A malicious client could cause other clients that do reject invalid UTF-8 strings to disconnect themselves from the broker by sending a topic string which is not valid UTF-8, and so cause a denial of service for the clients.

Where it's fixed

ProductFixed inFixReleased
Linux
libmosquitto1 · Ubuntu 18.04.6 LTS (bionic) 1.4.15-2ubuntu0.18.04.3 libmosquitto1 1.4.15-2ubuntu0.18.04.3 Jun 4, 2018
libmosquittopp1 · Ubuntu 18.04.6 LTS (bionic) 1.4.15-2ubuntu0.18.04.3 libmosquittopp1 1.4.15-2ubuntu0.18.04.3 Jun 4, 2018
mosquitto · Ubuntu 18.04.6 LTS (bionic) 1.4.15-2ubuntu0.18.04.3 mosquitto 1.4.15-2ubuntu0.18.04.3 Jun 4, 2018
mosquitto-clients · Ubuntu 18.04.6 LTS (bionic) 1.4.15-2ubuntu0.18.04.3 mosquitto-clients 1.4.15-2ubuntu0.18.04.3 Jun 4, 2018