Improper Input Validation Affecting mosquitto package, versions <1.4.15-2ubuntu0.18.10.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1810-MOSQUITTO-284187
- published5 Jun 2018
- disclosed5 Jun 2018
Introduced: 5 Jun 2018
CVE-2017-7653 (opens in a new tab)How to fix?
Upgrade Ubuntu:18.10 mosquitto to version 1.4.15-2ubuntu0.18.10.3 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream mosquitto package and not the mosquitto package as distributed by Ubuntu.
See How to fix? for Ubuntu:18.10 relevant fixed versions and status.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-7653
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=532113
- https://www.debian.org/security/2018/dsa-4325
- https://lists.debian.org/debian-lts-announce/2018/09/msg00036.html
- https://security-tracker.debian.org/tracker/CVE-2017-7653
- http://docs.oasis-open.org/mqtt/disallowed-chars/v1.0/disallowed-chars-v1.0.pdf
- https://usn.ubuntu.com/4023-1/