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 treat this as though no ACL file has been defined and use a default allow…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.0
- 8.1 HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.35% probability · 70th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-440
- Affected
- eclipse/mosquitto
- Source
- emo@eclipse.org
References
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=541870Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00035.html
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=541870Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00035.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.