Bug 1696312 (CVE-2018-12551) - CVE-2018-12551 mosquitto: improper authentication in password file
Summary: CVE-2018-12551 mosquitto: improper authentication in password file
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-12551
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1696315 1696317
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-04-04 14:08 UTC by Dhananjay Arunesh
Modified: 2019-09-29 15:10 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-05-09 16:07:38 UTC
Embargoed:

Attachments (Terms of Use)

Description Dhananjay Arunesh 2019-04-04 14:08:37 UTC 
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.

Reference:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=543401
Comment 1 Dhananjay Arunesh 2019-04-04 14:19:11 UTC 
Created mosquitto tracking bugs for this issue:

Affects: fedora-29 [bug 1696315]
Comment 2 Dhananjay Arunesh 2019-04-04 14:19:39 UTC 
Created mosquitto tracking bugs for this issue:

Affects: epel-7 [bug 1696317]
Note You need to log in before you can comment on or make changes to this bug.