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CVE-2023-6933— Better Search Replace <= 1.4.4 - Unauthenticated PHP Object Injection

Quick assessment

Affected
wpengine Better Search Replace
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 Better Search Replace 1.4.4 版本及之前版本存在安全漏洞，该漏洞源于通过不可信输入的反序列化而受到 PHP 对象注入的攻击。

CVSS 8.8 · High EPSS 68.05% · P99

Public Exploits 1

Nuclei · 1 CVE-2023-6933.yaml [template]
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I. Basic Information for CVE-2023-6933

Vulnerability Information
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Vulnerability Title
Better Search Replace <= 1.4.4 - Unauthenticated PHP Object Injection
Source: CVE Program / CVE List V5
Vulnerability Description
The Better Search Replace plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.4.4 via deserialization of untrusted input. This makes it possible for unauthenticated attackers to inject a PHP Object. No POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Better Search Replace 安全漏洞
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 Better Search Replace 1.4.4 版本及之前版本存在安全漏洞，该漏洞源于通过不可信输入的反序列化而受到 PHP 对象注入的攻击。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
wpengine Better Search Replace * ~ 1.4.4 -

II. Public POCs for CVE-2023-6933

# POC Description Source Link Shenlong Link
1 Introduction to CVE-2023-6933 Vulnerability https://github.com/w2xim3/CVE-2023-6933 POC Details
2 None https://github.com/Trex96/vulnerable-bsr-lab-CVE-2023-6933 POC Details
3 The Better Search Replace plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.4.4 via deserialization of untrusted input. This makes it possible for unauthenticated attackers to inject a PHP Object. No POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-6933.yaml POC Details
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III. Intelligence Information for CVE-2023-6933

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Patches & Fixes for CVE-2023-6933 (2)

Vendor Advisories for CVE-2023-6933 (1)

IV. Related Vulnerabilities

Same product: Better Search Replace
Same vendor: wpengine
Same weakness: CWE-502

V. Comments for CVE-2023-6933

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