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CVE-2021-34639— WordPress Download Manager <= 3.1.24 Authenticated Arbitrary File Upload

Quick assessment

Affected
W3 Eden, Inc. WordPress Download Manager
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是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 插件是WordPress开源的一个应用插件。 WordPress 下载管理器插件3.1.24之前版本存在代码问题漏洞，该漏洞源于插件允许认证用户上传双扩展名文件，例如:"payload.php.png"在某些配置下是可执行的。

CVSS 7.5 · High EPSS 0.58% · P46

Possible ATT&CK Techniques 1 AI

T1505 · Server Software Component
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I. Basic Information for CVE-2021-34639

Vulnerability Information
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Vulnerability Title
WordPress Download Manager <= 3.1.24 Authenticated Arbitrary File Upload
Source: CVE Program / CVE List V5
Vulnerability Description
Authenticated File Upload in WordPress Download Manager <= 3.1.24 allows authenticated (Author+) users to upload files with a double extension, e.g. "payload.php.png" which is executable in some configurations. This issue affects: WordPress Download Manager version 3.1.24 and prior versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
依赖于外部提供文件的文件名或扩展名
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress 插件代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress是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 插件是WordPress开源的一个应用插件。 WordPress 下载管理器插件3.1.24之前版本存在代码问题漏洞，该漏洞源于插件允许认证用户上传双扩展名文件，例如:"payload.php.png"在某些配置下是可执行的。
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
W3 Eden, Inc. WordPress Download Manager 3.1.24 ~ 3.1.24 -

II. Public POCs for CVE-2021-34639

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III. Intelligence Information for CVE-2021-34639

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Vendor Advisories for CVE-2021-34639 (1)

IV. Related Vulnerabilities

Same product: WordPress Download Manager
Same vendor: W3 Eden, Inc.
Same weakness: CWE-646

V. Comments for CVE-2021-34639

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