High severity · published Mar 27, 2019
CVE-2018-12550
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…
8.1
CVSS
1.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
Mosquitto · Eclipse
1.0 through 1.5.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-12550
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-12550
Issue Tracking
https://bugs.eclipse.org/bugs/show_bug.cgi?id=541870
lists.debian.org
https://lists.debian.org/debian-lts-announce/2019/10/msg00035.html
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