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I. Basic Information for CVE-2021-4451
Vulnerability Information

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Vulnerability Title
NinjaFirewall <= 4.3.3 - Authenticated PHAR Deserialization
Source: NVD (National Vulnerability Database)
Vulnerability Description
The NinjaFirewall plugin for WordPress is vulnerable to Authenticated PHAR Deserialization in versions up to, and including, 4.3.3. This allows authenticated attackers to perform phar deserialization on the server. This deserialization can allow other plugin or theme exploits if vulnerable software is present (WordPress, and NinjaFirewall).
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
可信数据的反序列化
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin NinjaFirewall 代码问题漏洞
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 NinjaFirewall 4.3.3版本及之前版本存在代码问题漏洞,该漏洞源于经过身份验证的 PHAR 反序列化。
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
VendorProductAffected VersionsCPESubscribe
nintechnetNinjaFirewall (WP Edition) – Advanced Security Plugin and Firewall * ~ 4.3.4 -
II. Public POCs for CVE-2021-4451
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III. Intelligence Information for CVE-2021-4451
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