CVE-2021-33603

Denial-of-Service (DoS) Vulnerability

More information

A denial-of-service (DoS) vulnerability was discovered in F-Secure Atlant whereby the AVPACK module component used in certain F-Secure products can crash while scanning a fuzzed files. The exploit can be triggered remotely by an attacker. A successful attack will result in denial-of-service (DoS) of the antivirus engine.

This issue was reported to F-Secure through the Vulnerability Reward Program. No known exploit or attack has been seen in the wild.

Contributors

F-Secure Corporation would like to thank following person for bringing this issue to our attention.

Antti Levomäki

Forcepoint

Twitter

Christian Jalio

Forcepoint

Twitter

    Description

  • Denial-of-service of the antivirus engine when scanning a fuzzed file.

    • Status

  • Fixed

    • Risk level

  • Medium

    • Fix

  • No user action is required. The required fix has been published through automatic update channel with Capricorn update 2021-09-29_03.

    • Affected products

  • Corporate Products: All F-Secure endpoint protection products on Windows and Mac F-Secure Linux Security (32-bit) F-Secure Linux Security 64 F-Secure Atlant F-Secure Internet Gatekeeper F-Secure Cloud Protection for Salesforce F-Secure Elements for Microsoft 365

    • Platforms

  • All supported platforms for the affected products

    • Date issued

  • 8/10/2021
Read more
  • Security advisories
  • 2021
  • Medium