CVE-2021-40836— 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
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 Anti-Virus是芬兰F-Secure（F-secure）公司的一套杀毒软件。该软件集成了多个病毒监测引擎，可对操作系统进行实时病毒扫描，并提供了强大的后台管理功能。 F-Secure Anti-Virus engine 存在安全漏洞，远程攻击者可通过该漏洞扫描 MS Outlook .pst 文件并导致拒绝服务。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-40836
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 was discovered whereby scanning MS outlook .pst files 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.
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 Anti-Virus 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
F-secure F-Secure Anti-Virus是芬兰F-Secure（F-secure）公司的一套杀毒软件。该软件集成了多个病毒监测引擎，可对操作系统进行实时病毒扫描，并提供了强大的后台管理功能。 F-Secure Anti-Virus engine 存在安全漏洞，远程攻击者可通过该漏洞扫描 MS Outlook .pst 文件并导致拒绝服务。
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 | All Version | - |
|
II. Public POCs for CVE-2021-40836
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2021-40836 (1)
IV. Related Vulnerabilities
Same vendor: F-Secure
V. Comments for CVE-2021-40836
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