CVE-2018-12550

Description

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.

Category

8.1
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.47%
Vendor Advisory eclipse.org
Affected: The Eclipse Foundation Eclipse Mosquitto
Published at:
Updated at:

References

Link Tags
https://bugs.eclipse.org/bugs/show_bug.cgi?id=541870 issue tracking vendor advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00035.html mailing list

Frequently Asked Questions

What is the severity of CVE-2018-12550?
CVE-2018-12550 has been scored as a high severity vulnerability.
How to fix CVE-2018-12550?
To fix CVE-2018-12550, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-12550 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-12550 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-12550?
CVE-2018-12550 affects The Eclipse Foundation Eclipse Mosquitto.
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