CVE-2007-1968 in MyBlog
Summary
by MITRE
PHP remote file inclusion vulnerability in games.php in Sam Crew MyBlog, possibly 1.0 through 1.6, allows remote attackers to execute arbitrary PHP code via a URL in the scoreid parameter.
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Analysis
by VulDB Data Team • 09/04/2024
The vulnerability identified as CVE-2007-1968 represents a critical remote file inclusion flaw in the Sam Crew MyBlog application version 1.0 through 1.6, specifically affecting the games.php script. This vulnerability falls under the category of insecure direct object references and remote code execution, creating a significant security risk for affected systems. The flaw stems from inadequate input validation and sanitization mechanisms that fail to properly restrict user-supplied data from being directly incorporated into file inclusion operations. The vulnerability is particularly dangerous because it allows remote attackers to inject malicious URLs through the scoreid parameter, enabling them to execute arbitrary PHP code on the target server.
The technical implementation of this vulnerability occurs when the games.php script processes the scoreid parameter without proper validation or sanitization of user input. When an attacker supplies a malicious URL through this parameter, the application's file inclusion mechanism treats it as a legitimate file path and attempts to include and execute the remote code. This behavior aligns with CWE-88, which describes improper neutralization of special elements used in an expression, and CWE-94, which addresses insufficient control of generation of code. The vulnerability operates at the application layer, specifically within the PHP interpreter's file inclusion functions, making it particularly dangerous as it can bypass traditional network-based security controls.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with complete control over the affected server. Once exploited, attackers can upload additional malicious files, establish persistent backdoors, and potentially escalate privileges to gain access to underlying system resources. The vulnerability affects the integrity and confidentiality of the entire web application, as it allows unauthorized users to manipulate the application's behavior and potentially compromise the entire server infrastructure. This type of vulnerability is particularly concerning in web hosting environments where multiple applications share the same server resources, as it can serve as a vector for lateral movement and broader system compromise. The ATT&CK framework categorizes this vulnerability under T1190 - Exploit Public-Facing Application, highlighting the attack surface and exploitation methods available to threat actors.
Mitigation strategies for this vulnerability require immediate implementation of input validation and sanitization measures within the affected application. The recommended approach involves implementing strict parameter validation that rejects any input containing suspicious characters or patterns typically associated with remote file inclusion attempts. Organizations should also implement proper file inclusion practices by using whitelisting mechanisms or predefined safe file paths instead of allowing arbitrary user input to determine file locations. Additionally, disabling remote file inclusion capabilities in PHP configurations and implementing proper access controls can significantly reduce the risk. The vulnerability demonstrates the importance of following secure coding practices and adhering to the principle of least privilege in web application development. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities and ensure that all input parameters are properly validated before being processed by the application's file inclusion mechanisms.