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CVE-2021-24295— Time-based Blind SQL Injection in Spam protection, AntiSpam, FireWall by CleanTalk < 5.153.4

Quick assessment

Affected
СleanTalk Spam protection, AntiSpam, FireWall by CleanTalk
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 插件是WordPress开源的一个应用插件。 CleanTalk WordPress Plugin 5.153.4之前版本存在SQL注入漏洞，该漏洞源于lib/Cleantalk/ApbctWP/Firewall/SFW.php中的更新日志函数包含了一个易受攻击的查询。

AI Predicted 8.6 Difficulty: Easy EPSS 4.69% · P91

Public Exploits 1

Nuclei · 1 CVE-2021-24295.yaml [template]

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-24295

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Time-based Blind SQL Injection in Spam protection, AntiSpam, FireWall by CleanTalk < 5.153.4
Source: CVE Program / CVE List V5
Vulnerability Description
It was possible to exploit an Unauthenticated Time-Based Blind SQL Injection vulnerability in the Spam protection, AntiSpam, FireWall by CleanTalk WordPress Plugin before 5.153.4. The update_log function in lib/Cleantalk/ApbctWP/Firewall/SFW.php included a vulnerable query that could be injected via the User-Agent Header by manipulating the cookies set by the Spam protection, AntiSpam, FireWall by CleanTalk WordPress plugin before 5.153.4, sending an initial request to obtain a ct_sfw_pass_key cookie and then manually setting a separate ct_sfw_passed cookie and disallowing it from being reset.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress 插件 SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress 插件是WordPress开源的一个应用插件。 CleanTalk WordPress Plugin 5.153.4之前版本存在SQL注入漏洞，该漏洞源于lib/Cleantalk/ApbctWP/Firewall/SFW.php中的更新日志函数包含了一个易受攻击的查询。
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
СleanTalk Spam protection, AntiSpam, FireWall by CleanTalk 5.153.4 ~ 5.153.4 -

II. Public POCs for CVE-2021-24295

# POC Description Source Link Shenlong Link
1 It was possible to exploit an Unauthenticated Time-Based Blind SQL Injection vulnerability in the Spam protection, AntiSpam, FireWall by CleanTalk WordPress Plugin before 5.153.4. The update_log function in lib/Cleantalk/ApbctWP/Firewall/SFW.php included a vulnerable query that could be injected via the User-Agent Header by manipulating the cookies set by the Spam protection, AntiSpam, FireWall by CleanTalk WordPress plugin before 5.153.4, sending an initial request to obtain a ct_sfw_pass_key cookie and then manually setting a separate ct_sfw_passed cookie and disallowing it from being reset. https://github.com/projectdiscovery/nuclei-templates/blob/main/passive/cves/2022/CVE-2021-24295.yaml POC Details
2 It was possible to exploit an Unauthenticated Time-Based Blind SQL Injection vulnerability in the Spam protection, AntiSpam, FireWall by CleanTalk WordPress Plugin before 5.153.4. The update_log function in lib/Cleantalk/ApbctWP/Firewall/SFW.php included a vulnerable query that could be injected via the User-Agent Header by manipulating the cookies set by the Spam protection, AntiSpam, FireWall by CleanTalk WordPress plugin before 5.153.4, sending an initial request to obtain a ct_sfw_pass_key cookie and then manually setting a separate ct_sfw_passed cookie and disallowing it from being reset. https://github.com/projectdiscovery/nuclei-templates/blob/main/passive/cves/2021/CVE-2021-24295.yaml POC Details
3 It was possible to exploit an Unauthenticated Time-Based Blind SQL Injection vulnerability in the Spam protection, AntiSpam, FireWall by CleanTalk WordPress Plugin before 5.153.4. The update_log function in lib/Cleantalk/ApbctWP/Firewall/SFW.php included a vulnerable query that could be injected via the User-Agent Header by manipulating the cookies set by the Spam protection, AntiSpam, FireWall by CleanTalk WordPress plugin before 5.153.4, sending an initial request to obtain a ct_sfw_pass_key cookie and then manually setting a separate ct_sfw_passed cookie and disallowing it from being reset. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-24295.yaml POC Details
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III. Intelligence Information for CVE-2021-24295

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Vendor Advisories for CVE-2021-24295 (2)

IV. Related Vulnerabilities

Same product: Spam protection, AntiSpam, FireWall by CleanTalk
Same weakness: CWE-89

V. Comments for CVE-2021-24295

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