CVE-2007-0498 in MySpeach
Summary
by MITRE
PHP remote file inclusion vulnerability in up.php in MySpeach 2.1 beta and possibly earlier allows remote attackers to execute arbitrary PHP code via a URL in the my[root] parameter.
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Analysis
by VulDB Data Team • 08/18/2024
The vulnerability identified as CVE-2007-0498 represents a critical remote file inclusion flaw in the MySpeach 2.1 beta content management system, with potential impacts extending to earlier versions. This vulnerability resides within the up.php script and demonstrates a classic security weakness that has been documented in numerous web applications over the years. The flaw occurs when user-supplied input is directly incorporated into file inclusion operations without proper validation or sanitization, creating an avenue for malicious actors to execute arbitrary code on the target system.
The technical implementation of this vulnerability stems from improper input handling within the my[root] parameter, which is processed through the up.php script. When an attacker supplies a malicious URL as the value for this parameter, the application fails to validate or sanitize the input before using it in a file inclusion context. This allows the remote attacker to inject external URLs that point to malicious PHP scripts hosted on attacker-controlled servers. The vulnerability directly maps to CWE-88, which describes improper neutralization of argument delimiters in a command or injection attack, and more specifically to CWE-94, which addresses the execution of arbitrary code through inadequate input validation in interpreted languages.
The operational impact of this vulnerability is severe and multifaceted. Successful exploitation enables remote code execution, allowing attackers to gain complete control over the affected web server. Attackers can leverage this capability to upload additional malicious files, establish backdoors, exfiltrate sensitive data, or use the compromised system as a launch point for further attacks within the network. The vulnerability's remote nature means that exploitation can occur from anywhere on the internet without requiring local access or authentication. This makes it particularly dangerous in environments where web applications are exposed to public networks and where proper security controls are not in place.
From an attack framework perspective, this vulnerability aligns with techniques described in the MITRE ATT&CK framework under the T1190 category for exploit public-facing applications. The attack chain typically involves reconnaissance to identify the vulnerable application, crafting malicious payloads with URLs pointing to attacker-controlled servers, and executing the payload through the vulnerable parameter. Organizations should implement multiple layers of defense including input validation, proper file inclusion practices, and network segmentation to mitigate such vulnerabilities. The remediation strategy should focus on eliminating the direct user input from file inclusion operations, implementing whitelisting mechanisms, and applying the principle of least privilege to reduce the impact of successful exploitation attempts. Additionally, regular security assessments and vulnerability scanning should be conducted to identify similar issues in other applications within the organization's attack surface.