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CVE-2021-4226— RSFirewall < 1.1.25 - IP Block Bypass

Quick assessment

Affected
Unknown RSFirewall!
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.

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress plugin是一个应用插件。 WordPress plugin RSFirewall 1.1.25之前版本存在安全漏洞。攻击者利用该漏洞试图通过查看不同的HTTP标头来识别原始IP地址。

AI Predicted 4.3 Difficulty: Moderate EPSS 0.51% · P41

Possible ATT&CK Techniques 1 AI

T1155
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I. Basic Information for CVE-2021-4226

Vulnerability Information
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Vulnerability Title
RSFirewall < 1.1.25 - IP Block Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
RSFirewall tries to identify the original IP address by looking at different HTTP headers. A bypass is possible due to the way it is implemented.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin RSFirewall 1.1.25 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress plugin是一个应用插件。 WordPress plugin RSFirewall 1.1.25之前版本存在安全漏洞。攻击者利用该漏洞试图通过查看不同的HTTP标头来识别原始IP地址。
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
Unknown RSFirewall! 0 ~ 1.1.25 -

II. Public POCs for CVE-2021-4226

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III. Intelligence Information for CVE-2021-4226

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Vendor Advisories for CVE-2021-4226 (1)

IV. Related Vulnerabilities

Same product: RSFirewall!
Same vendor: Unknown

V. Comments for CVE-2021-4226

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