CVE-2021-33600 Denial of Service Vulnerability in Web Interface of F-Secure Internet Gatekeeper
An unauthenticated attacker can cause a denial of service in F-Secure Internet Gatekeeper by sending a large username parameter to the web interface.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-33600?
CVE-2021-33600 is a medium-severity denial of service vulnerability in F-Secure Internet Gatekeeper, published on 28 Sep 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-617
Which versions are affected by CVE-2021-33600?
It affects 1 product.
Products include F-Secure Internet Gatekeeper.
How do I fix CVE-2021-33600?
No fix has been published for CVE-2021-33600 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-33600 being exploited?
There is no known exploitation of CVE-2021-33600 in the wild and no public exploit code.
Other vulnerabilities in F-Secure Internet Gatekeeper
Sources
Also known as GHSA-453r-cx7v-94wr.