CVE-2021-40833: Denial-of-Service (DoS) Vulnerability

Published Nov 26, 2021

Updated

A vulnerability affecting F-Secure antivirus engine was discovered whereby unpacking UPX file can lead to denial-of-service. The vulnerability can be exploited remotely by an attacker. A successful attack will result in denial-of-service of the antivirus engine.

Affected Software

7 affected components

F-Secure Atlant

F-Secure Internet Gatekeeper

F-Secure Linux Security

F-Secure Linux Security 64

F-Secure Elements Endpoint Protection

Apple macOS

Microsoft Windows

Remediation

Information

FIX No User action is required. The required fix has been published through automatic update channel with Capricorn update 2021-11-22_03

Event History

Nov 26, 2021

CVE Published

via MITRE·04:39 PM

Data Sourced

via MITRE·04:39 PM

RemedyDescriptionSeverityWeakness

Frequently Asked Questions

What is CVE-2021-40833?

CVE-2021-40833 is a vulnerability affecting F-Secure antivirus engine that can lead to denial-of-service by unpacking UPX files.

How can the CVE-2021-40833 vulnerability be exploited?

The CVE-2021-40833 vulnerability can be exploited remotely by an attacker.

What is the severity of CVE-2021-40833?

CVE-2021-40833 has a severity rating of 5.5 (medium).

Which software is affected by CVE-2021-40833?

F-Secure antivirus engines such as Atlant, Internet Gatekeeper, Linux Security, Linux Security 64, and Elements Endpoint Protection are affected by CVE-2021-40833.

How can I learn more about CVE-2021-40833?

You can learn more about CVE-2021-40833 from the F-Secure Vulnerability Reward Program Hall of Fame and the F-Secure security advisories page.