CVE-2021-40837 : Vulnerability Insights and Analysis

This CVE article provides details about a Denial-of-Service (DoS) Vulnerability affecting F-Secure antivirus products.

Understanding CVE-2021-40837

This section delves into the specifics of the CVE vulnerability.

What is CVE-2021-40837?

A vulnerability in F-Secure antivirus engine can be exploited via ACE file decompression, leading to a denial-of-service attack.

The Impact of CVE-2021-40837

The vulnerability's CVSS score is 4.6 (Medium Severity) and requires low privileges, impacting the availability of antivirus services.

Technical Details of CVE-2021-40837

Explore the technical aspects of this CVE.

Vulnerability Description

The flaw in F-Secure antivirus engines pre-Capricorn update causes remote attackers to stop scanner services, resulting in a denial of service.

Affected Systems and Versions

Products: F-Secure endpoint protection on Windows and Mac, F-Secure Linux Security, F-Secure Atlant, and more
Versions: All versions of the affected F-Secure products.

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
User Interaction: Required
Scope: Unchanged
More details in the CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L

Mitigation and Prevention

Learn about mitigating steps post-discovery of CVE-2021-40837

Immediate Steps to Take

No user action needed as the fix is part of Capricorn update 2022-02-01_01

Long-Term Security Practices

Regularly update the F-Secure products to ensure protection

Patching and Updates

Ensure automatic updates are enabled to receive necessary security patches.