PT-2022-11313 · F Secure · F-Secure Antivirus Engine

Published 2022-02-09 · Updated 2022-02-11 · CVE-2021-40837

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions F-Secure antivirus engine versions before Capricorn update 2022-02-01 01

Description A vulnerability was discovered in the F-Secure antivirus engine, where the decompression of an ACE file causes the scanner service to stop. This issue can be exploited remotely by an attacker, resulting in a denial-of-service of the antivirus engine.

Recommendations For versions before Capricorn update 2022-02-01 01, update to a version that includes the Capricorn update 2022-02-01 01 or later to resolve the issue. As a temporary workaround, consider restricting the handling of ACE files by the antivirus engine until a patch is available.

Fix

Related Identifiers

CVE-2021-40837

Affected Products

F-Secure Antivirus Engine

References · 6

• https://f-secure.com/en/business/support-and-downloads/security-advisories · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-40837 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-40837 · Security Note
• https://f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-40837 · Vendor Advisory
• https://t.me/cvenotify/26501 · Telegram Post
• https://t.me/cibsecurity/37058 · Telegram Post