#VU82555 Input validation error in framework - CVE-2021-33609

Vulnerability identifier: #VU82555

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-33609

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
framework
Server applications / Frameworks for developing and running applications

Vendor: vaadin

Description

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

The vulnerability exists due to missing check in DataCommunicator class in com.vaadin:vaadin-server. A remote user can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

framework: 8.0.0 - 8.14.0

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External links
https://github.com/vaadin/framework/pull/12415
https://vaadin.com/security/cve-2021-33609

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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.