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CVE-2021-40837— Denial-of-Service (DoS) Vulnerability

Quick assessment

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 Atlant, F-Secure Internet Gatekeeper & F-Secure Security Cloud
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

F-secure F-Secure antivirus engine是芬兰F-Secure（F-secure）公司的一款安全引擎。 F-Secure antivirus engine 存在安全漏洞，该漏洞源于 ACE 文件的解压缩导致扫描程序服务停止。攻击者可以远程利用该漏洞导致防病毒引擎的拒绝服务。

CVSS 4.6 · Medium EPSS 0.66% · P49
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I. Basic Information for CVE-2021-40837

Vulnerability Information
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Vulnerability Title
Denial-of-Service (DoS) Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability affecting F-Secure antivirus engine before Capricorn update 2022-02-01_01 was discovered whereby decompression of ACE file causes the scanner service to stop. The vulnerability can be exploited remotely by an attacker. A successful attack will result in denial-of-service of the antivirus engine.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
F-Secure antivirus engine 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
F-secure F-Secure antivirus engine是芬兰F-Secure（F-secure）公司的一款安全引擎。 F-Secure antivirus engine 存在安全漏洞，该漏洞源于 ACE 文件的解压缩导致扫描程序服务停止。攻击者可以远程利用该漏洞导致防病毒引擎的拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
F-Secure 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 Security Cloud All Version -

II. Public POCs for CVE-2021-40837

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III. Intelligence Information for CVE-2021-40837

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Other References for CVE-2021-40837 (2)

IV. Related Vulnerabilities

Same vendor: F-Secure

V. Comments for CVE-2021-40837

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