Bug 1456507 (CVE-2017-7650) - CVE-2017-7650 mosquitto: Pattern based ACLs can be bypassed
Summary: CVE-2017-7650 mosquitto: Pattern based ACLs can be bypassed
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2017-7650
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: 1456508 1456509
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-05-29 13:42 UTC by Andrej Nemec
Modified: 2021-02-17 02:06 UTC (History)
3 users (show)

Fixed In Version: mosquitto 1.4.12
Clone Of:
Environment:
Last Closed: 2018-05-05 10:19:12 UTC
Embargoed:

Attachments (Terms of Use)

Description Andrej Nemec 2017-05-29 13:42:11 UTC 
A vulnerability exists in Mosquitto versions 0.15 to 1.4.11.

Pattern based ACLs can be bypassed by clients that set their username/client id to ‘#’ or ‘+’. This allows locally or remotely connected clients to access MQTT topics that they do have the rights to. The same issue may be present in third party authentication/access control plugins for Mosquitto.

The vulnerability only comes into effect where pattern based ACLs are in use, or potentially where third party plugins are in use.

External References:

http://mosquitto.org/2017/05/security-advisory-cve-2017-7650/
Comment 1 Andrej Nemec 2017-05-29 13:42:40 UTC 
Created mosquitto tracking bugs for this issue:

Affects: epel-7 [bug 1456509]
Affects: fedora-all [bug 1456508]
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