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CVE-2021-33600— Denial of Service Vulnerability in Web Interface of F-Secure Internet Gatekeeper

Quick assessment

Affected
F-Secure 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 Internet Gatekeeper是芬兰F-Secure公司的一款高效且易管理的企业网络网关级的安全防护解决方案。 F-Secure Internet Gatekeeper存在安全漏洞，该漏洞源于软件用户界面对于错误的HTTP报文处理存在问题。攻击者可以通过错误的HTTP报文向web界面触发断言。未经身份验证的攻击者可以通过发送较大的用户名参数来利用这个漏洞。成功利用此漏洞可能会导致对产品的拒绝服务攻击。

CVSS 5.4 · Medium EPSS 0.61% · P46

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-33600

Vulnerability Information
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Vulnerability Title
Denial of Service Vulnerability in Web Interface of F-Secure Internet Gatekeeper
Source: CVE Program / CVE List V5
Vulnerability Description
A denial-of-service (DoS) vulnerability was discovered in the web user interface of F-Secure Internet Gatekeeper. The vulnerability occurs because of an attacker can trigger assertion via malformed HTTP packet to web interface. An unauthenticated attacker could exploit this vulnerability by sending a large username parameter. A successful exploitation could lead to a denial-of-service of the product.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
F-Secure Internet Gatekeeper 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
F-Secure Internet Gatekeeper是芬兰F-Secure公司的一款高效且易管理的企业网络网关级的安全防护解决方案。 F-Secure Internet Gatekeeper存在安全漏洞，该漏洞源于软件用户界面对于错误的HTTP报文处理存在问题。攻击者可以通过错误的HTTP报文向web界面触发断言。未经身份验证的攻击者可以通过发送较大的用户名参数来利用这个漏洞。成功利用此漏洞可能会导致对产品的拒绝服务攻击。
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 Internet Gatekeeper 5 Series All Version -

II. Public POCs for CVE-2021-33600

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III. Intelligence Information for CVE-2021-33600

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Other References for CVE-2021-33600 (2)

IV. Related Vulnerabilities

Same product: F-Secure Internet Gatekeeper
Same vendor: F-Secure

V. Comments for CVE-2021-33600

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