#VU53724 Input validation error in RabbitMQ - CVE-2021-22116

Vulnerability identifier: #VU53724

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-22116

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
RabbitMQ
Client/Desktop applications / Messaging software

Vendor: VMware, Inc

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 when processing AMPQ messages in AMQP 1.0 client connection endpoint.. A remote attacker can send specially crafted input to the application and perform a denial of service (DoS) attack.

Successful exploitation of the vulnerability requires that AMQP 1.0 plugin is enabled.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

RabbitMQ: 1.1.1 - 4.0.0

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External links
https://tanzu.vmware.com/security/cve-2021-22116

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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.