CVE-2021-44747 Denial-of-Service (DoS) Vulnerability
Remote attackers can crash the F-Secure Anti-Virus engine by sending fuzzed files, causing a denial of service.
- 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-2021-44747?
CVE-2021-44747 is a medium-severity denial of service vulnerability in F-Secure endpoint protection products on Mac, F-Secure Linux Security (32-bit), F-Secure Linux Security 64, F-Secure Atlant, F-Secure Internet Gatekeeper & F-Secure Security Cloud, published on 1 Mar 2022. 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 F-Secure Linux Security whereby the Fmlib component used in certain F-Secure products can crash while scanning fuzzed files. The exploit can be triggered remotely by an attacker. A successful attack will result in Denial-of-Service of the Anti-Virus engine.
Which versions are affected by CVE-2021-44747?
It affects 5 products.
Products include F-Secure Atlant, F-Secure Elements Endpoint Protection, F-Secure Internet Gatekeeper, F-Secure Linux Security, F-Secure Security Cloud.
How do I fix CVE-2021-44747?
No fix has been published for CVE-2021-44747 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-2021-44747 being exploited?
There is no known exploitation of CVE-2021-44747 in the wild and no public exploit code.
Other vulnerabilities in F-Secure endpoint protection products on Mac, F-Secure Linux Security (32-bit), F-Secure Linux Security 64, F-Secure Atlant, F-Secure Internet Gatekeeper & F-Secure Security Cloud
Sources
Also known as GHSA-pcr7-vhw2-6q28.