Vulnerability CVE-2017-7650
Published: 2017-09-11

Description:
In Mosquitto before 1.4.12, 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.

Type:

CWE-287

 (Improper Authentication)

CVSS2 => (AV:N/AC:L/Au:S/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4/10
2.9/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Mosquitto -> Mosquitto 
Eclipse -> Mosquitto 
Debian -> Debian linux 

 References:
http://mosquitto.org/2017/05/security-advisory-cve-2017-7650/
http://www.debian.org/security/2017/dsa-3865
http://www.securityfocus.com/bid/98741
https://bugs.eclipse.org/bugs/show_bug.cgi?id=516765
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