CVE-2007-0633 in MyNews
Summary
by MITRE
PHP remote file inclusion vulnerability in include/themes/themefunc.php in MyNews 4.2.2 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the myNewsConf[path][sys][index] parameter.
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Analysis
by VulDB Data Team • 08/20/2024
The vulnerability described in CVE-2007-0633 represents a critical remote file inclusion flaw affecting MyNews 4.2.2 and earlier versions. This issue resides within the include/themes/themefunc.php file where the application fails to properly validate user input before incorporating it into file inclusion operations. The vulnerability specifically targets the myNewsConf[path][sys][index] parameter which is used to determine system paths for theme functionality. When an attacker supplies a malicious URL through this parameter, the application blindly includes and executes the remote code, creating a severe security risk.
The technical nature of this vulnerability aligns with CWE-88, which describes improper neutralization of special elements used in an expression, and CWE-94, which covers execution of arbitrary code. This flaw operates as a classic remote code execution vulnerability where the attacker can inject arbitrary PHP code through a remote URL, bypassing normal input validation mechanisms. The vulnerability occurs because the application uses user-supplied input directly in include() or require() statements without proper sanitization or validation, making it susceptible to path traversal attacks and remote code execution.
From an operational impact perspective, this vulnerability presents a significant threat to systems running affected MyNews versions. Attackers can leverage this flaw to execute malicious code on the target server, potentially leading to complete system compromise, data theft, or unauthorized access to sensitive information. The remote nature of the exploit means that attackers do not require local access or credentials to exploit the vulnerability, making it particularly dangerous. Organizations using MyNews 4.2.2 or earlier versions face immediate risk of unauthorized code execution and potential system infiltration, with implications for data integrity, confidentiality, and availability.
Mitigation strategies for this vulnerability involve several critical steps including immediate patching of the affected MyNews versions to the latest releases that address the remote file inclusion flaw. System administrators should implement input validation measures to sanitize all user-supplied parameters before they are processed by the application. Additionally, the principle of least privilege should be enforced by restricting web server access to only necessary files and directories. Network segmentation and firewall rules can help limit the attack surface, while regular security audits and vulnerability assessments should be conducted to identify similar issues in other applications. The ATT&CK framework categorizes this vulnerability under T1190 - Exploit Public-Facing Application, highlighting the need for proper application hardening and regular security updates to prevent exploitation. Organizations should also consider implementing web application firewalls and runtime application self-protection mechanisms to detect and prevent such attacks in real-time.