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CVE-2022-21647— Deserialization of Untrusted Data in Codeigniter4

Quick assessment

Affected
codeigniter4 CodeIgniter4
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

CodeIgniter是一款使用PHP语言编写的开源Web框架。 CodeIgniter 存在代码问题漏洞，该漏洞源于软件中的old() 函数中发现了不可信数据的反序列化。远程攻击者可能会注入带有此漏洞的可自动加载的任意对象，并可能在服务器上执行现有的PHP代码。

CVSS 7.7 · High EPSS 37.67% · P98

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2022-21647

Vulnerability Information
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Vulnerability Title
Deserialization of Untrusted Data in Codeigniter4
Source: CVE Program / CVE List V5
Vulnerability Description
CodeIgniter is an open source PHP full-stack web framework. Deserialization of Untrusted Data was found in the `old()` function in CodeIgniter4. Remote attackers may inject auto-loadable arbitrary objects with this vulnerability, and possibly execute existing PHP code on the server. We are aware of a working exploit, which can lead to SQL injection. Users are advised to upgrade to v4.1.6 or later. Users unable to upgrade as advised to not use the `old()` function and form_helper nor `RedirectResponse::withInput()` and `redirect()->withInput()`.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/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
CodeIgniter 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CodeIgniter是一款使用PHP语言编写的开源Web框架。 CodeIgniter 存在代码问题漏洞，该漏洞源于软件中的old() 函数中发现了不可信数据的反序列化。远程攻击者可能会注入带有此漏洞的可自动加载的任意对象，并可能在服务器上执行现有的PHP代码。
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
codeigniter4 CodeIgniter4 < 4.1.6 -

II. Public POCs for CVE-2022-21647

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III. Intelligence Information for CVE-2022-21647

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Patches & Fixes for CVE-2022-21647 (1)

Vendor Advisories for CVE-2022-21647 (1)

IV. Related Vulnerabilities

Same product: CodeIgniter4
Same vendor: codeigniter4
Same weakness: CWE-502

V. Comments for CVE-2022-21647

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