CVE-2006-2860 in WebspotBlogging
Summary
by MITRE
PHP remote file inclusion vulnerability in Webspotblogging 3.0.1 allows remote attackers to execute arbitrary PHP code via a URL in the path parameter to (1) inc/logincheck.inc.php, (2) inc/adminheader.inc.php, (3) inc/global.php, or (4) inc/mainheader.inc.php. NOTE: some of these vectors were also reported for 3.0 in a separate disclosure.
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Analysis
by VulDB Data Team • 07/01/2024
The vulnerability identified as CVE-2006-2860 represents a critical remote file inclusion flaw in the Webspotblogging 3.0.1 content management system that exposes the application to arbitrary code execution attacks. This vulnerability specifically affects the application's handling of user-supplied input through the path parameter in multiple include files, creating a pathway for malicious actors to inject and execute unauthorized PHP code on the target server. The flaw exists due to insufficient input validation and sanitization within the application's include statement processing mechanism, allowing attackers to manipulate the include path with malicious URLs that point to remote servers containing attacker-controlled code.
The technical nature of this vulnerability aligns with CWE-88, which describes improper neutralization of special elements used in an expression, specifically in the context of code injection. The vulnerability operates through a classic remote file inclusion attack vector where the application's use of user-controllable input in include statements creates an opportunity for attackers to load external files containing malicious code. When the application processes the path parameter through the affected include files inc/logincheck.inc.php, inc/adminheader.inc.php, inc/global.php, or inc/mainheader.inc.php, it fails to validate or sanitize the input, allowing the attacker to specify a remote URL that gets included and executed as PHP code. This represents a fundamental failure in input validation and secure coding practices, as the application directly incorporates user-supplied data into its execution flow without proper security controls.
The operational impact of this vulnerability is severe and far-reaching, potentially allowing attackers to gain complete control over the affected web server. Successful exploitation could enable unauthorized users to execute arbitrary commands, access sensitive data, modify content, or establish persistent backdoors within the web application environment. The vulnerability affects multiple include files, increasing the attack surface and providing multiple potential entry points for exploitation, which makes it particularly dangerous for system administrators to secure. Organizations running Webspotblogging 3.0.1 are at significant risk of compromise, as the vulnerability can be exploited without requiring authentication and can be triggered through simple HTTP requests. The impact extends beyond immediate code execution to include potential data breaches, service disruption, and compliance violations, particularly in environments where the application handles sensitive information.
Mitigation strategies for CVE-2006-2860 must address both immediate remediation and long-term security improvements. The primary fix involves implementing strict input validation and sanitization for all user-supplied parameters, particularly those used in include statements, ensuring that only trusted and validated input is processed. Organizations should disable remote file inclusion capabilities within their PHP configurations by setting the allow_url_include directive to off in php.ini, effectively preventing the application from including files from remote locations. Additionally, implementing proper input validation using allowlists of acceptable values and rejecting any input that contains suspicious patterns or external URLs can significantly reduce the risk. System administrators should also consider implementing web application firewalls to detect and block malicious requests containing suspicious URL patterns, while regular security audits and code reviews should be conducted to identify similar vulnerabilities in other parts of the application. The vulnerability demonstrates the critical importance of secure coding practices and input validation, aligning with ATT&CK technique T1190 for exploitation through remote file inclusion and T1059 for command and script injection, which together form a comprehensive attack pattern that organizations must defend against through proper configuration and code hardening measures.