CVE-2018-12550 Affecting mosquitto package, versions <1.5.6-1
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-DEBIAN13-MOSQUITTO-5689022
- published9 Feb 2019
- disclosed27 Mar 2019
Introduced: 9 Feb 2019
CVE-2018-12550 (opens in a new tab)How to fix?
Upgrade Debian:13 mosquitto to version 1.5.6-1 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 Debian.
See How to fix? for Debian:13 relevant fixed versions and status.
When Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) is configured to use an ACL file, and that ACL file is empty, or contains only comments or blank lines, then Mosquitto will treat this as though no ACL file has been defined and use a default allow policy. The new behaviour is to have an empty ACL file mean that all access is denied, which is not a useful configuration but is not unexpected.
References
- https://security-tracker.debian.org/tracker/CVE-2018-12550
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=541870
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12550
- https://lists.debian.org/debian-lts-announce/2019/10/msg00035.html
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-12550