CVE-2021-33599 : Exploit Details and Defense Strategies
Discover the details surrounding CVE-2021-33599, a denial-of-service vulnerability impacting various F-Secure endpoint protection products. Learn about the impact, affected systems, and mitigation steps.
A denial-of-service vulnerability was discovered in F-Secure Antivirus engine, affecting various F-Secure endpoint protection products. This vulnerability allows remote attackers to cause a denial of service by triggering an infinite loop and freezing the AV engine scanner.
Understanding CVE-2021-33599
This section provides insights into the nature and impact of the CVE-2021-33599 vulnerability.
What is CVE-2021-33599?
The vulnerability in F-Secure Antivirus engine can be exploited remotely to cause a denial-of-service attack, resulting in the AV engine scanner becoming unresponsive.
The Impact of CVE-2021-33599
A successful attack could lead to complete denial of service of the Anti-Virus engine, affecting the security and performance of the impacted systems.
Technical Details of CVE-2021-33599
Explore the specific details related to CVE-2021-33599 to better understand its implications.
Vulnerability Description
The vulnerability arises when scanning WIM archive files, triggering an infinite loop that causes the AV engine scanner to freeze, leading to denial of service.
Affected Systems and Versions
F-Secure endpoint protection products on Windows and Mac, F-Secure Linux Security, F-Secure Atlant, F-Secure Cloud Protection for Salesforce are impacted across all versions.
Exploitation Mechanism
Remote attackers can exploit this vulnerability to remotely trigger a denial-of-service attack on the AV engine scanner.
Mitigation and Prevention
Discover the steps to mitigate the risks associated with CVE-2021-33599 and prevent potential attacks.
Immediate Steps to Take
No user action is required, as F-Secure has published a fix through an automatic update channel with Capricorn update 2021-08-25_04.
Long-Term Security Practices
Regularly update F-Secure products to ensure that the latest security patches are applied and maintain a proactive approach towards cybersecurity.
Patching and Updates
Stay informed about security advisories and apply relevant patches promptly to protect systems from potential vulnerabilities.