CVE-2007-2095 in MySpeach
Summary
by MITRE
PHP remote file inclusion vulnerability in chat.php in MySpeach 1.9 allows remote attackers to execute arbitrary PHP code via a URL in the my[root] parameter, a different vector than CVE-2007-0498.
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Analysis
by VulDB Data Team • 08/29/2018
The vulnerability identified as CVE-2007-2095 represents a critical remote file inclusion flaw in the MySpeach 1.9 web application's chat.php component. This security weakness resides in the application's handling of user-supplied input through the my[root] parameter, which creates an avenue for malicious actors to execute arbitrary PHP code on the affected server. The vulnerability operates through a remote code execution vector that differs significantly from the previously identified CVE-2007-0498, indicating a distinct attack surface within the same application framework.
The technical implementation of this vulnerability stems from improper input validation and sanitization within the chat.php script. When the application processes the my[root] parameter without adequate security controls, it fails to verify the legitimacy of the provided URL or file path. This absence of proper validation allows attackers to inject malicious URLs that point to remote servers hosting malicious PHP payloads. The flaw essentially permits the application to include and execute external PHP files, transforming the legitimate file inclusion functionality into a weapon for code execution. This type of vulnerability falls under the CWE-98 category, which specifically addresses improper file inclusion vulnerabilities where attacker-controllable input is used to determine which file to include.
The operational impact of this vulnerability extends beyond simple code execution to encompass complete system compromise. An attacker exploiting this flaw can gain unauthorized access to the web server, potentially leading to data theft, system infiltration, or further network propagation. The remote nature of the attack means that exploitation can occur from anywhere on the internet without requiring physical access to the target system. This vulnerability particularly affects web applications that rely on dynamic file inclusion mechanisms, making it a significant concern for any MySpeach 1.9 installations that have not been patched. The attack vector aligns with ATT&CK technique T1190, which describes the use of remote file inclusion to execute malicious code on target systems.
Mitigation strategies for CVE-2007-2095 must address both immediate remediation and long-term security hardening measures. The primary solution involves patching the application to version 1.9.1 or later, which contains the necessary fixes to prevent unauthorized file inclusion. Additionally, administrators should implement input validation controls that reject any URLs or file paths containing suspicious patterns or external references. The application should be configured to use a whitelist approach for file inclusion, ensuring that only pre-approved local files can be accessed. Security measures should include disabling remote file inclusion features entirely when possible, implementing proper parameter sanitization, and establishing robust access controls. Organizations should also consider deploying web application firewalls to detect and block malicious inclusion attempts, while monitoring system logs for indicators of exploitation attempts. The vulnerability demonstrates the importance of secure coding practices and proper input validation as outlined in OWASP Top Ten categories related to injection flaws and insecure direct object references.