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CVE-2021-42362— WordPress Popular Posts <= 5.3.2 Authenticated Arbitrary File Upload

Quick assessment

Affected
WordPress Popular Posts WordPress Popular Posts
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress是WordPress（Wordpress）基金会的一套使用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 WordPress Popular Posts 存在代码问题漏洞，该漏洞源于 ~/src/Image.php 文件中的输入文件类型验证不足。这使得具有贡献者级别及以上访问权限的攻击者可以通过上传可以使用的恶意文件来进行远程代码执行。

CVSS 8.8 · High EPSS 79.82% · P100

Public Exploits 2

ExploitDB · 1 EDB-50129 [webapps]
Metasploit · 1 wp_popular_posts_rce.rb [exploit]
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I. Basic Information for CVE-2021-42362

Vulnerability Information
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Vulnerability Title
WordPress Popular Posts <= 5.3.2 Authenticated Arbitrary File Upload
Source: CVE Program / CVE List V5
Vulnerability Description
The WordPress Popular Posts WordPress plugin is vulnerable to arbitrary file uploads due to insufficient input file type validation found in the ~/src/Image.php file which makes it possible for attackers with contributor level access and above to upload malicious files that can be used to obtain remote code execution, in versions up to and including 5.3.2.
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 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress是WordPress（Wordpress）基金会的一套使用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 WordPress Popular Posts 存在代码问题漏洞，该漏洞源于 ~/src/Image.php 文件中的输入文件类型验证不足。这使得具有贡献者级别及以上访问权限的攻击者可以通过上传可以使用的恶意文件来进行远程代码执行。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
WordPress Popular Posts WordPress Popular Posts 0.0 ~ 5.3.2 -

II. Public POCs for CVE-2021-42362

# POC Description Source Link Shenlong Link
1 Wordpress Most Popular Post plugin vuln https://github.com/simonecris/CVE-2021-42362-PoC POC Details
2 The WordPress Popular Posts WordPress plugin is vulnerable to arbitrary file uploads due to insufficient input file type validation found in the ~/src/Image.php file which makes it possible for attackers with contributor level access and above to upload malicious files that can be used to obtain remote code execution, https://github.com/samiba6/CVE-2021-42362 POC Details
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III. Intelligence Information for CVE-2021-42362

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Patches & Fixes for CVE-2021-42362 (2)

Vendor Advisories for CVE-2021-42362 (2)

Exploits & Public PoCs for CVE-2021-42362 (1)

Security Blog Posts for CVE-2021-42362 (1)

IV. Related Vulnerabilities

Same product: WordPress Popular Posts
Same weakness: CWE-434

V. Comments for CVE-2021-42362

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