Upstream information

CVE-2018-12551 at MITRE

Description

When Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) is configured to use a password file for authentication, any malformed data in the password file will be treated as valid. This typically means that the malformed data becomes a username and no password. If this occurs, clients can circumvent authentication and get access to the broker by using the malformed username. In particular, a blank line will be treated as a valid empty username. Other security measures are unaffected. Users who have only used the mosquitto_passwd utility to create and modify their password files are unaffected by this vulnerability.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v2 Scores
CVSS detail National Vulnerability Database
Base Score 6.8
Vector AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
CVSS v3 Scores
CVSS detail National Vulnerability Database
Base Score 8.1
Vector CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
CVSSv3 Version 3
SUSE Bugzilla entry: 1125020 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Package Hub 15
  • libmosquitto1 >= 1.4.15-bp150.3.3.1
  • libmosquittopp1 >= 1.4.15-bp150.3.3.1
  • mosquitto >= 1.4.15-bp150.3.3.1
  • mosquitto-clients >= 1.4.15-bp150.3.3.1
  • mosquitto-devel >= 1.4.15-bp150.3.3.1
 Patchnames:
openSUSE-2019-237
openSUSE Leap 15.0
  • libmosquitto1 >= 1.4.15-lp150.2.3.1
  • libmosquittopp1 >= 1.4.15-lp150.2.3.1
  • mosquitto >= 1.4.15-lp150.2.3.1
  • mosquitto-clients >= 1.4.15-lp150.2.3.1
  • mosquitto-devel >= 1.4.15-lp150.2.3.1
 Patchnames:
openSUSE-2019-233
openSUSE Tumbleweed
  • libmosquitto1 >= 2.0.11-1.2
  • libmosquittopp1 >= 2.0.11-1.2
  • mosquitto >= 2.0.11-1.2
  • mosquitto-clients >= 2.0.11-1.2
  • mosquitto-devel >= 2.0.11-1.2
 Patchnames:
openSUSE-Tumbleweed-2024-11057

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products past their end of life and not receiving proactive updates anymore.
SUSE Package Hub 15 mosquitto Released

SUSE Timeline for this CVE

CVE page created: Mon Feb 11 17:03:41 2019
CVE page last modified: Thu Dec 11 16:03:20 2025