CVE-2009-4752 in Swinger Club Portal
Summary
by MITRE
PHP remote file inclusion vulnerability in anzeiger/start.php in Swinger Club Portal allows remote attackers to execute arbitrary PHP code via a URL in the go parameter.
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Analysis
by VulDB Data Team • 05/03/2026
The vulnerability identified as CVE-2009-4752 represents a critical remote file inclusion flaw in the Swinger Club Portal application's anzeiger/start.php component. This issue falls under the category of insecure direct object references and improper input validation, creating a pathway for malicious actors to execute arbitrary code on the target system. The vulnerability specifically manifests when the application fails to properly validate user-supplied input passed through the 'go' parameter, allowing attackers to inject malicious URLs that get included and executed as PHP code.
The technical implementation of this vulnerability stems from the application's improper handling of user input within the file inclusion mechanism. When the 'go' parameter is processed, the application directly incorporates its value into a file inclusion statement without adequate sanitization or validation. This creates a classic remote file inclusion attack vector where an attacker can supply a URL pointing to a malicious PHP script hosted on a remote server. The PHP interpreter then executes the remote code as part of the application's processing flow, effectively granting the attacker full control over the affected system's execution environment.
From an operational impact perspective, this vulnerability poses severe risks to system integrity and data confidentiality. Successful exploitation allows attackers to execute arbitrary commands on the target server, potentially leading to complete system compromise, data exfiltration, or deployment of additional malware. The vulnerability affects the application's authentication and authorization mechanisms, as attackers can bypass normal access controls to gain elevated privileges. Network security monitoring systems may struggle to detect this attack due to the legitimate-looking HTTP requests that appear to be normal application behavior, making it particularly dangerous in production environments.
The vulnerability aligns with CWE-98 and CWE-89 categories, representing improper input validation and code injection flaws respectively. According to ATT&CK framework, this vulnerability maps to T1190 (Exploit Public-Facing Application) and T1059.007 (Command and Scripting Interpreter: PHP), indicating the attack pattern involves exploiting application weaknesses to execute malicious code. Organizations should implement immediate mitigations including input validation, parameter sanitization, and disabling remote file inclusion features in PHP configurations. The recommended defensive measures include implementing proper access controls, using allowlists for file inclusion parameters, and deploying web application firewalls to detect and block malicious URL patterns. Additionally, regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other application components, ensuring comprehensive protection against similar remote file inclusion attacks.