Improper Authorization in Eclipse Mosquitto



Published: 2021-09-02
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-34434
CWE-ID CWE-285
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Eclipse Mosquitto
Server applications / Other server solutions

Vendor Eclipse

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Authorization

EUVDB-ID: #VU56273

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-34434

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authorization checks.

The vulnerability exists due to a subscriptions revoke flaw when using the dynamic security plugin. A remote attacker can send a specially crafted request and obtain subscriptions information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Eclipse Mosquitto: 2.0.0 - 2.0.11

External links

http://bugs.eclipse.org/bugs/show_bug.cgi?id=575324


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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



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