CVE-2007-0504 in Vote Pro
Summary
by MITRE
Eval injection vulnerability in poll_frame.php in Vote! Pro 4.0, and possibly other scripts, allows remote attackers to execute arbitrary code via the poll_id parameter, which is supplied to an eval function call, a different vulnerability type than CVE-2005-4632.
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Analysis
by VulDB Data Team • 08/19/2024
The CVE-2007-0504 vulnerability represents a critical server-side code injection flaw in the Vote! Pro 4.0 web application that specifically targets the poll_frame.php script. This vulnerability stems from improper input validation and sanitization mechanisms that fail to properly handle user-supplied data before it is processed through an eval function call. The flaw is particularly dangerous because it allows remote attackers to execute arbitrary code on the affected server with the privileges of the web application, potentially leading to complete system compromise.
The technical implementation of this vulnerability occurs when the poll_id parameter is passed directly to an eval function without adequate sanitization or validation. This creates a classic code injection scenario where malicious input can be interpreted and executed as PHP code by the server. The vulnerability is classified under CWE-94, which specifically addresses the execution of arbitrary code through improper input handling. Unlike CVE-2005-4632 which dealt with different injection vectors, this vulnerability specifically exploits the eval function's dangerous behavior of executing dynamically constructed code. The attack vector is remote and requires no authentication, making it particularly attractive to threat actors seeking automated exploitation opportunities.
The operational impact of CVE-2007-0504 extends beyond simple code execution to encompass full system compromise and data breach potential. An attacker who successfully exploits this vulnerability can gain complete control over the web server running Vote! Pro 4.0, potentially accessing sensitive data, modifying application functionality, or using the compromised system as a launch point for further attacks within the network infrastructure. The vulnerability's presence in the poll_frame.php script suggests that any web application using similar patterns for handling poll identifiers or user input could be at risk, particularly those employing dynamic code execution mechanisms. This makes the vulnerability particularly concerning for organizations running legacy web applications that may not have been properly updated or patched.
Mitigation strategies for CVE-2007-0504 must focus on eliminating the dangerous eval function usage and implementing proper input validation and sanitization mechanisms. Organizations should immediately patch the affected Vote! Pro 4.0 application to the latest available version or implement proper parameter validation that prevents malicious input from being processed through eval calls. The recommended approach involves using whitelisting techniques to validate poll_id values against predefined acceptable ranges or patterns, rather than allowing arbitrary input to be executed directly. Additionally, implementing proper input sanitization and output encoding practices can prevent malicious payloads from being interpreted as executable code. From an ATT&CK framework perspective, this vulnerability maps to T1059.007 for scripting languages and T1190 for exploitation of remote services, emphasizing the need for both defensive measures and monitoring to detect potential exploitation attempts.