Denial of service in Eclipse Mosquitto



Published: 2021-12-02
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-41039
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Eclipse Mosquitto
Server applications / Other server solutions

Vendor Eclipse

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU58484

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-41039

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send specially crafted CONNECT packets containing lots of "user properties" and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Eclipse Mosquitto: 1.6 - 2.0.11

External links

http://bugs.eclipse.org/bugs/show_bug.cgi?id=575314


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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