CVE-2007-1982 in Really Simple PHP
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in Really Simple PHP and Ajax (RSPA) 2007-03-23 and earlier allow remote attackers to execute arbitrary PHP code via a URL in the (1) __IncludeFilePHPClass, (2) __ClassPath, and (3) __class parameters to (a) rspa/framework/Controller_v5.php, and (b) rspa/framework/Controller_v4.php.
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Analysis
by VulDB Data Team • 09/03/2024
The vulnerability identified as CVE-2007-1982 represents a critical remote code execution flaw within the Really Simple PHP and Ajax (RSPA) framework version 2007-03-23 and earlier. This vulnerability manifests through multiple pathways that allow remote attackers to inject and execute arbitrary PHP code on affected systems. The flaw specifically exists in the Controller_v5.php and Controller_v4.php files within the rspa/framework directory structure, where the application fails to properly validate or sanitize user-supplied input parameters before incorporating them into file inclusion operations.
The technical implementation of this vulnerability stems from the framework's improper handling of user input through three distinct parameter names: __IncludeFilePHPClass, __ClassPath, and __class. These parameters are directly processed by the application's file inclusion mechanisms without adequate validation, creating a classic remote file inclusion (RFI) attack vector. When an attacker supplies a malicious URL through any of these parameters, the framework attempts to include and execute the remote file as if it were a local PHP script, effectively allowing arbitrary code execution on the target server. This vulnerability operates under the common weakness enumeration CWE-88, which classifies the issue as improper neutralization of special elements used in an expression, specifically in the context of command and control operations.
The operational impact of this vulnerability extends far beyond simple code execution, as it provides attackers with complete control over affected systems. Successful exploitation can lead to data breaches, system compromise, and the potential for further lateral movement within network environments. Attackers can leverage this vulnerability to upload backdoors, exfiltrate sensitive data, or establish persistent access to compromised servers. The vulnerability's remote nature means that attackers do not require physical access or local credentials to exploit the flaw, making it particularly dangerous for web applications that are publicly accessible. According to the attack technique framework, this vulnerability maps to ATT&CK technique T1190, which describes the use of remote file inclusion to execute malicious code on target systems.
Mitigation strategies for this vulnerability require immediate action from system administrators and developers. The most effective approach involves upgrading to a patched version of the RSPA framework where input validation and sanitization have been implemented for the affected parameters. Additionally, implementing proper input validation at the application level, including whitelisting of acceptable values, can prevent malicious inputs from being processed. Network-level protections such as web application firewalls can also help detect and block malicious requests attempting to exploit this vulnerability. The implementation of secure coding practices, particularly around file inclusion operations, should be enforced throughout the application development lifecycle to prevent similar vulnerabilities from being introduced in future versions of the software.