PT-2021-20225 · F Secure · F-Secure Antivirus Engine

Published 2021-09-07 · Updated 2021-09-09 · CVE-2021-33599

Positive Technologies (AI Summary)

CVSS v3.1

4.6

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions F-Secure Antivirus engine (affected versions not specified)

Description A vulnerability was discovered in the F-Secure Antivirus engine, where scanning a WIM archive file can lead to a denial-of-service, causing an infinite loop and freezing the AV engine scanner. This issue can be exploited remotely by an attacker, resulting in the denial-of-service of the Anti-Virus engine.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Infinite Loop

Weakness Enumeration

CWE-835

Related Identifiers

CVE-2021-33599

Affected Products

F-Secure Antivirus Engine

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2021-33599 · Security Note
• https://f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame · Vendor Advisory
• https://f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33599 · Vendor Advisory
• https://t.me/cibsecurity/28335 · Telegram Post