Denial of service in Eclipse Mosquitto



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-34431
CWE-ID CWE-401
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Eclipse Mosquitto
Server applications / Other server solutions

Vendor Eclipse

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Memory leak

EUVDB-ID: #VU55435

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-34431

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak in the broker. A remote authenticated attacker can send a specially crafted CONNECT message and perform denial of service attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Eclipse Mosquitto: 1.6.1 - 2.0.10

CPE2.3 External links

https://bugs.eclipse.org/bugs/show_bug.cgi?id=573191


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user 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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