Medium severity · published Sep 11, 2017
CVE-2017-7650
In Mosquitto before 1.4.12, pattern based ACLs can be bypassed by clients that set their username/client id to '#' or '+'
6.5
CVSS
2.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.5% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0 · source: NVD
MO
Mosquitto · Eclipse
before 1.4.12 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-7650
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-7650
Patch
http://mosquitto.org/2017/05/security-advisory-cve-2017-7650/
Third Party Advisory
http://www.debian.org/security/2017/dsa-3865
Third Party Advisory
http://www.securityfocus.com/bid/98741
Exploit
https://bugs.eclipse.org/bugs/show_bug.cgi?id=516765
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