What is CVE-2021-33600?

CVE-2021-33600 is a denial-of-service (DoS) vulnerability discovered in the web user interface of F-Secure Internet Gatekeeper.

How does CVE-2021-33600 occur?

CVE-2021-33600 occurs because an attacker can trigger an assertion via a malformed HTTP packet to the web interface.

Which versions of F-Secure Internet Gatekeeper are affected by CVE-2021-33600?

CVE-2021-33600 affects F-Secure Internet Gatekeeper versions 5.10 to 5.50.47.

How can I mitigate the vulnerability CVE-2021-33600?

To mitigate CVE-2021-33600, it is recommended to update F-Secure Internet Gatekeeper to a version beyond 5.50.47.

Vulnerability/
CVE-2021-33600

high

7.5

CWE

617

28/9/2021

3/8/2024

CVE-2021-33600: Denial of Service Vulnerability in Web Interface of F-Secure Internet Gatekeeper

Q: What is the impact of CVE-2021-33600?

The impact of CVE-2021-33600 is that an unauthenticated attacker could exploit this vulnerability to cause a denial-of-service (DoS) condition.

First published: Tue Sep 28 2021(Updated: )

A denial-of-service (DoS) vulnerability was discovered in the web user interface of F-Secure Internet Gatekeeper. The vulnerability occurs because of an attacker can trigger assertion via malformed HTTP packet to web interface. An unauthenticated attacker could exploit this vulnerability by sending a large username parameter. A successful exploitation could lead to a denial-of-service of the product.

Credit: cve-notifications-us@f-secure.com

Affected Software	Affected Version	How to fix
F-secure Internet Gatekeeper	>=5.10<=5.50.47

Remedy

FIX: Hotfix 9 will be published to fix this vulnerability. Download and instructions available at: https://www.f-secure.com/en/business/downloads/internet-gatekeeper

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Reference Links

Frequently Asked Questions

What is CVE-2021-33600?
CVE-2021-33600 is a denial-of-service (DoS) vulnerability discovered in the web user interface of F-Secure Internet Gatekeeper.
How does CVE-2021-33600 occur?
CVE-2021-33600 occurs because an attacker can trigger an assertion via a malformed HTTP packet to the web interface.
What is the impact of CVE-2021-33600?
The impact of CVE-2021-33600 is that an unauthenticated attacker could exploit this vulnerability to cause a denial-of-service (DoS) condition.
Which versions of F-Secure Internet Gatekeeper are affected by CVE-2021-33600?
CVE-2021-33600 affects F-Secure Internet Gatekeeper versions 5.10 to 5.50.47.
How can I mitigate the vulnerability CVE-2021-33600?
To mitigate CVE-2021-33600, it is recommended to update F-Secure Internet Gatekeeper to a version beyond 5.50.47.

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