CVE-2007-0577 in ACGVclick
Summary
by MITRE
PHP remote file inclusion vulnerability in function.inc.php in ACGVclick 0.2.0 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the path parameter.
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Analysis
by VulDB Data Team • 08/19/2024
The vulnerability identified as CVE-2007-0577 represents a critical remote file inclusion flaw in the ACGVclick content management system version 0.2.0 and earlier. This vulnerability exists within the function.inc.php file where the application fails to properly validate or sanitize user input passed through the path parameter. The flaw enables malicious actors to inject arbitrary URLs that are then included and executed as PHP code on the target server, creating a severe security risk that can lead to complete system compromise.
The technical implementation of this vulnerability stems from improper input validation practices within the PHP application. When the path parameter is processed, the system does not adequately filter or sanitize the input before using it in include or require statements. This creates an environment where an attacker can manipulate the parameter to point to external malicious PHP scripts hosted on remote servers. The vulnerability aligns with CWE-98, which specifically addresses improper file inclusion vulnerabilities, and represents a classic example of a remote code execution flaw that can be exploited through web application input manipulation.
The operational impact of this vulnerability extends far beyond simple code execution, as it provides attackers with complete control over the affected system. Once exploited, adversaries can execute arbitrary commands, upload additional malicious files, modify existing code, and potentially escalate privileges to gain administrative access. This vulnerability can be leveraged to establish persistent backdoors, exfiltrate sensitive data, or use the compromised server as a launching point for attacks against other systems within the network. The attack vector is particularly dangerous because it requires minimal user interaction and can be automated through web crawlers or exploitation frameworks.
Mitigation strategies for CVE-2007-0577 must address both immediate remediation and long-term security hardening. The primary solution involves upgrading to a patched version of ACGVclick or implementing proper input validation that prevents external URL inclusion. Organizations should implement strict parameter validation using allowlists of acceptable values, disable remote file inclusion functionality in PHP configurations, and employ web application firewalls to detect and block malicious requests. Additionally, following the principle of least privilege and implementing proper access controls can limit the potential damage from successful exploitation. The remediation approach should align with security frameworks such as the NIST Cybersecurity Framework and align with ATT&CK techniques related to command and control through web shell execution and remote code execution. Regular security assessments and input validation testing should be implemented to prevent similar vulnerabilities from emerging in future software versions.