Bug 1409748 (CVE-2016-9877) - CVE-2016-9877 rabbitmq: MQTT connection authentication succeeds with empty password
Summary: CVE-2016-9877 rabbitmq: MQTT connection authentication succeeds with empty pa...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2016-9877
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: 1409749 1409750
Blocks: 1409752
TreeView+ depends on / blocked
 
Reported: 2017-01-03 08:52 UTC by Martin Prpič
Modified: 2021-03-11 14:53 UTC (History)
26 users (show)

Fixed In Version: RabbitMQ 3.5.8, RabbitMQ 3.6.6
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Last Closed: 2017-04-13 02:40:36 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Github rabbitmq rabbitmq-mqtt pull 98 0 None None None 2017-12-07 08:02:08 UTC

Description Martin Prpič 2017-01-03 08:52:59 UTC 
It was found that RabbitMQ's MQTT (MQ Telemetry Transport) connection authentication with a username/password pair succeeds if an existing username is provided but the password is omitted from the connection request. Connections that use TLS with a client-provided certificate are not affected.
Comment 1 Martin Prpič 2017-01-03 08:53:21 UTC 
External References:

https://pivotal.io/security/cve-2016-9877
Comment 2 Martin Prpič 2017-01-03 08:54:09 UTC 
Created rabbitmq-server tracking bugs for this issue:

Affects: epel-all [bug 1409749]
Affects: fedora-all [bug 1409750]
Comment 3 Siddharth Sharma 2017-02-06 08:14:41 UTC 
Upstream Fix:

https://github.com/rabbitmq/rabbitmq-mqtt/issues/96, This seems to be upstream fix

https://github.com/rabbitmq/rabbitmq-mqtt/commit/157948d86d391a325ac9702f78976c175ced58be
https://github.com/rabbitmq/rabbitmq-mqtt/commit/039a3c22e57bf77b325d19494a9b20cd745f1ea7
Comment 7 Peter Lemenkov 2017-12-06 12:31:27 UTC 
Indeed we don't use MQTT in our OpenStack configuration, so it was decided that the impact of this issue is negligibly low.

It's possible to backport the fix to OSP10 though.
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