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CVE-2021-4354— PWA for WP & AMP <= 1.7.32 - Arbitrary File Upload

Quick assessment

Affected
magazine3 PWA for WP – Progressive Web Apps Made Simple
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 PWA for WP & AMP 存在代码问题漏洞，该漏洞源于 pwaforwp_splashscreen_uploader 函数中缺少文件类型验证，容易受到任意文件上传的攻击。

CVSS 8.8 · High EPSS 1.82% · P77

Possible ATT&CK Techniques 1 AI

T1505.003 · Web Shell
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I. Basic Information for CVE-2021-4354

Vulnerability Information
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Vulnerability Title
PWA for WP & AMP <= 1.7.32 - Arbitrary File Upload
Source: CVE Program / CVE List V5
Vulnerability Description
The PWA for WP & AMP for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the pwaforwp_splashscreen_uploader function in versions up to, and including, 1.7.32. This makes it possible for authenticated attackers to upload arbitrary files on the affected sites server which may make remote code execution possible.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Plugin PWA for WP & AMP 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 PWA for WP & AMP 存在代码问题漏洞，该漏洞源于 pwaforwp_splashscreen_uploader 函数中缺少文件类型验证，容易受到任意文件上传的攻击。
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
magazine3 PWA for WP & AMP * ~ 1.7.32 -

II. Public POCs for CVE-2021-4354

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III. Intelligence Information for CVE-2021-4354

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Vendor Advisories for CVE-2021-4354 (1)

Security Blog Posts for CVE-2021-4354 (1)

IV. Related Vulnerabilities

Same product: PWA for WP – Progressive Web Apps Made Simple
Same vendor: magazine3
Same weakness: CWE-434

V. Comments for CVE-2021-4354

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