CVE-2006-4441 in Ay System Solutions
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in Ay System Solutions CMS 2.6 and earlier allow remote attackers to execute arbitrary PHP code via a URL in the path[ShowProcessHandle] parameter to (1) home.php or (2) impressum.php. NOTE: the provenance of this information is unknown; the details are obtained from third party information.
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Analysis
by VulDB Data Team • 07/13/2025
The vulnerability identified as CVE-2006-4441 represents a critical remote file inclusion flaw within the Ay System Solutions CMS version 2.6 and earlier implementations. This vulnerability falls under the category of insecure direct object references and improper input validation, creating a pathway for malicious actors to execute arbitrary code on vulnerable systems. The flaw specifically manifests in the handling of user-supplied input within the path[ShowProcessHandle] parameter, which is processed through two primary entry points: home.php and impressum.php scripts.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL and passes it as the path[ShowProcessHandle] parameter to either of the vulnerable scripts. This allows the CMS to include and execute remote PHP code, effectively bypassing local security controls and potentially granting attackers full system access. The vulnerability stems from the CMS's failure to properly validate and sanitize user input before using it in file inclusion operations, creating a direct pathway for remote code execution through the web application's interface.
This vulnerability has significant operational impact as it enables attackers to execute arbitrary commands on the target system, potentially leading to complete system compromise. The remote nature of the exploit means that attackers can leverage this vulnerability from anywhere on the internet without requiring local access or credentials. The implications extend beyond simple code execution, as successful exploitation could result in data breaches, system infiltration, and potential use as a foothold for further attacks within network infrastructure. Organizations running affected CMS versions face substantial risk of unauthorized access and potential data loss.
Mitigation strategies for this vulnerability should focus on immediate patching of the CMS to version 2.7 or later, which contains the necessary security fixes. Additionally, administrators should implement input validation measures to sanitize all user-supplied parameters before processing, particularly those used in file inclusion operations. The implementation of web application firewalls and security monitoring systems can help detect and prevent exploitation attempts. From a compliance perspective, this vulnerability aligns with CWE-94 (Improper Control of Generation of Code) and addresses ATT&CK techniques related to remote code execution and privilege escalation. Organizations should also consider implementing least privilege principles and regular security assessments to identify similar vulnerabilities in their web applications.