CVE-2021-33572 : Vulnerability Insights and Analysis
Discover the Denial-of-Service (DoS) vulnerability in F-Secure Linux Security affecting certain F-Secure products. Learn about the impact, technical details, and mitigation steps for CVE-2021-33572.
A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Linux Security that affects certain F-Secure products. The vulnerability allows an attacker to remotely crash the FSAVD component by scanning large packages or fuzzed files, leading to a Denial-of-Service of the Anti-Virus engine.
Understanding CVE-2021-33572
This section delves into the details of the Denial-of-Service (DoS) vulnerability found in F-Secure Linux Security.
What is CVE-2021-33572?
The CVE-2021-33572 is a Denial-of-Service (DoS) vulnerability in F-Secure Linux Security that can be exploited remotely to crash the FSAVD component of specific F-Secure products while scanning large packages or fuzzed files.
The Impact of CVE-2021-33572
If successfully exploited, this vulnerability can result in a Denial-of-Service (DoS) of the Anti-Virus engine, affecting the normal functioning of the system and potentially exposing it to further security risks.
Technical Details of CVE-2021-33572
This section provides technical insights into the CVE-2021-33572 vulnerability.
Vulnerability Description
The vulnerability is classified as a NULL Pointer Dereference (CWE-476), allowing an attacker to trigger a remote crash of the Anti-Virus engine by sending specially crafted content for scanning by the FSAVD component.
Affected Systems and Versions
The vulnerability affects F-Secure Products on x86 & x64 platforms across all versions.
Exploitation Mechanism
The exploit takes advantage of the flaw in the FSAVD component, enabling attackers to remotely crash the system by sending large packages or fuzzed files for scanning.
Mitigation and Prevention
Protecting systems from the CVE-2021-33572 vulnerability requires immediate action and long-term security measures.
Immediate Steps to Take
No user action is required for the fix. The necessary patch has been released through an automatic update channel with the Capricorn update on 2021-04-29_07.
Long-Term Security Practices
To enhance overall security posture, it is recommended to stay updated with security advisories and ensure regular updates and patches are applied promptly.
Patching and Updates
Regularly check for security advisories from the vendor and apply all relevant updates promptly to protect systems from potential exploits.