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CVE-2021-24240— Business Hours Pro <= 5.5.0 - Unauthenticated Arbitrary File Upload to RCE

Quick assessment

Affected
Unknown Business Hours Pro
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（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。 Business Hours Pro WordPress plugin 5.5.0版本及之前版本存在代码问题漏洞，该漏洞允许远程攻击者使用其手动更新功能上传任意文件，导致未经验证的远程代码执行漏洞。

AI Predicted 9.8 Difficulty: Trivial EPSS 3.04% · P86

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-24240

Vulnerability Information
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Vulnerability Title
Business Hours Pro <= 5.5.0 - Unauthenticated Arbitrary File Upload to RCE
Source: CVE Program / CVE List V5
Vulnerability Description
The Business Hours Pro WordPress plugin through 5.5.0 allows a remote attacker to upload arbitrary files using its manual update functionality, leading to an unauthenticated remote code execution vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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。 Business Hours Pro WordPress plugin 5.5.0版本及之前版本存在代码问题漏洞，该漏洞允许远程攻击者使用其手动更新功能上传任意文件，导致未经验证的远程代码执行漏洞。
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 Business Hours Pro 5.5.0 ~ 5.5.0 -

II. Public POCs for CVE-2021-24240

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-24240

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Vendor Advisories for CVE-2021-24240 (1)

Other References for CVE-2021-24240 (1)

Same Patch Batch · Unknown · 2021-04-22 · 7 CVEs total

CVE-2021-24239 Pie Register < 3.7.0.1 - Reflected Cross-Site Scripting (XSS)
CVE-2021-24241 Advanced Custom Field Pro < 5.9.1 - Reflected Cross-Site Scripting (XSS)
CVE-2021-24232 Advanced Booking Calendar < 1.6.8 - Authenticated Reflected Cross-Site Scripting (XSS)
CVE-2021-24233 Cooked Pro < 1.7.5.6 - Unauthenticated Reflected Cross Site Scripting (XSS)
CVE-2021-24234 Ivory Search < 4.6.1 - Reflected Cross Site Scripting (XSS)
CVE-2021-24235 Goto - Tour & Travel < 2.0 - Unauthenticated Reflected XSS

IV. Related Vulnerabilities

Same vendor: Unknown
Same weakness: CWE-434

V. Comments for CVE-2021-24240

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