CVE-2021-33597 Denial-of-Service (DoS) Vulnerability
Remote attackers can crash the F-Secure Anti-Virus engine by sending specially crafted 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-2021-33597?
CVE-2021-33597 is a low-severity denial of service vulnerability in F-Secure endpoint protection products on Windows, Mac and Linux Security, published on 5 Aug 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 F-Secure Atlant whereby the SAVAPI 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 (DoS) of the Anti-Virus engine.
Which versions are affected by CVE-2021-33597?
It affects 4 products.
Products include F-Secure Business Suite, F-Secure Client Security, F-Secure Elements Endpoint Protection, F-Secure Linux Security.
How do I fix CVE-2021-33597?
No fix has been published for CVE-2021-33597 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-2021-33597 being exploited?
There is no known exploitation of CVE-2021-33597 in the wild and no public exploit code.
Sources
Also known as GHSA-wjrf-mx8r-f5jc.