CVE-2023-47253 in Qualitor
Summary
by MITRE • 11/06/2023
Qualitor through 8.20 allows remote attackers to execute arbitrary code via PHP code in the html/ad/adpesquisasql/request/processVariavel.php gridValoresPopHidden parameter.
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Analysis
by VulDB Data Team • 09/06/2024
The vulnerability identified as CVE-2023-47253 affects Qualitor versions through 8.20 and represents a critical remote code execution flaw that enables attackers to inject and execute arbitrary PHP code on the affected system. This vulnerability resides within the html/ad/adpesquisasql/request/processVariavel.php script where the gridValoresPopHidden parameter is processed without adequate input validation or sanitization. The flaw allows remote attackers to manipulate this specific parameter to inject malicious PHP code that gets executed within the context of the web application, potentially providing full system compromise capabilities.
The technical implementation of this vulnerability stems from improper handling of user-supplied input within the application's parameter processing logic. When the gridValoresPopHidden parameter is passed to the processVariavel.php script, the application fails to properly validate or sanitize the input before using it in dynamic PHP execution contexts. This creates an environment where attackers can inject malicious PHP code that gets interpreted and executed by the web server, bypassing normal security controls and access restrictions. The vulnerability is classified as a command injection or code injection flaw under CWE-94, which specifically addresses the execution of arbitrary code due to insufficient input validation.
The operational impact of this vulnerability is severe and far-reaching for organizations using affected Qualitor versions. Remote code execution capabilities allow attackers to gain complete control over the affected web server, potentially leading to data breaches, system compromise, and unauthorized access to sensitive information. Attackers can leverage this vulnerability to establish persistent access, deploy additional malware, or use the compromised system as a launch point for further attacks within the network infrastructure. The vulnerability's remote nature means that attackers do not require physical access or prior authentication to exploit the flaw, making it particularly dangerous from a security perspective. According to ATT&CK framework, this vulnerability maps to T1059.007 for PHP and T1059.008 for Python, representing the execution of code through scripting languages.
Organizations should implement immediate mitigations to address this vulnerability including updating to the latest available version of Qualitor that contains the necessary security patches. The vendor should have released a patch that properly validates and sanitizes input parameters before processing them within the application. Network segmentation and firewall rules should be implemented to restrict access to the vulnerable application, particularly limiting access to the specific endpoint containing the flaw. Additionally, input validation should be strengthened at multiple layers including application-level filtering and web application firewalls that can detect and block malicious payloads targeting this specific vulnerability. Regular security assessments and vulnerability scanning should be conducted to identify similar flaws within the application's codebase and ensure that proper security controls are in place to prevent future injection attacks.