Vulnerability identifier: #VU6840

Vulnerability risk: Low

CVSSv3.1: 3.5 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7650

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Eclipse Mosquitto
Server applications / Other server solutions

Vendor: Eclipse

Description
The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to improper handling of usernames, containing ‘#’ or ‘+’ characters, within pattern based ACLs. A remote attacker can create a specially crafted username and bypass implemented security mechanisms.

Mitigation
Update to version 1.4.12.

Vulnerable software versions

Eclipse Mosquitto: 0.15 - 1.4.11

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External links
http://mosquitto.org/category/security/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.