CVE-2021-40833

Denial-of-Service (DoS) Vulnerability

Description

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.

Remediation

Solution:

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

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.13%
Vendor Advisory f-secure.com Vendor Advisory f-secure.com
Affected: F-Secure F-Secure endpoint protection products on Windows and Mac. F-Secure Linux Security (32-bit) F-Secure Linux Security 64 F-Secure Internet Gatekeeper & F-Secure Atlant
Published at:
Updated at:

References

Link Tags
https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame vendor advisory
https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-40833 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-40833?
CVE-2021-40833 has been scored as a medium severity vulnerability.
How to fix CVE-2021-40833?
To fix CVE-2021-40833: FIX No User action is required. The required fix has been published through automatic update channel with Capricorn update 2021-11-22_03
Is CVE-2021-40833 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-40833 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-40833?
CVE-2021-40833 affects F-Secure F-Secure endpoint protection products on Windows and Mac. F-Secure Linux Security (32-bit) F-Secure Linux Security 64 F-Secure Internet Gatekeeper & F-Secure Atlant.
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