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CVE-2021-33600 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CNA: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame	CVE	Vendor Advisory
https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33600	CVE	Vendor Advisory
https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame	[email protected]	Vendor Advisory
https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33600	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-617	Reachable Assertion	[email protected]

Affected Products

Product	Versions
f-secure internet gatekeeper	>= 5.10, <= 5.50.47
CPE cpe:2.3:a:f-secure:internet_gatekeeper:::::::: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Oct 8, 2021	Initial Analysis	[email protected]