CVE-2007-1025 in VS-Link-Partner
Summary
by MITRE
PHP remote file inclusion vulnerability in inc/functions_inc.php in VS-Link-Partner 2.1 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the gb_pfad, or possibly script_pfad, parameter.
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Analysis
by VulDB Data Team • 08/23/2024
The vulnerability described in CVE-2007-1025 represents a critical remote file inclusion flaw affecting VS-Link-Partner version 2.1 and earlier. This vulnerability resides within the inc/functions_inc.php file and demonstrates a classic insecure direct object reference pattern that enables attackers to manipulate application behavior through crafted input parameters. The flaw specifically targets the gb_pfad and script_pfad parameters, which are used to include external files within the application's execution context. This vulnerability type falls under the CWE-88 category for improper neutralization of argument delimiters in a command, though it more directly aligns with CWE-94 which describes execution of arbitrary code due to improper input validation. The vulnerability exposes the application to remote code execution attacks where malicious actors can inject and execute arbitrary PHP code on the target server.
The technical exploitation of this vulnerability occurs through manipulation of URL parameters that are directly incorporated into include statements within the application code. When an attacker supplies a malicious URL in either the gb_pfad or script_pfad parameter, the application processes this input without proper validation or sanitization, leading to the inclusion of remote files from attacker-controlled domains. This pattern of vulnerability exploitation aligns with ATT&CK technique T1190 which describes the use of remote access tools and malicious file inclusion techniques to establish persistent access to target systems. The vulnerability essentially allows attackers to bypass normal access controls and execute arbitrary code with the privileges of the web application, potentially leading to complete system compromise.
The operational impact of this vulnerability extends beyond simple code execution to encompass full system compromise and data exfiltration capabilities. Attackers can leverage this flaw to deploy web shells, establish backdoors, or conduct further reconnaissance within the network environment. The vulnerability affects not only the immediate application but can also provide attackers with a foothold for lateral movement and privilege escalation attacks. Organizations running affected versions of VS-Link-Partner face significant risk of unauthorized access, data breaches, and potential regulatory compliance violations. The vulnerability's remote nature means that attackers do not require physical access or prior authentication to exploit the flaw, making it particularly dangerous in networked environments.
Mitigation strategies for CVE-2007-1025 must address both immediate remediation and long-term architectural improvements. The most effective immediate solution involves upgrading to a patched version of VS-Link-Partner that properly validates and sanitizes input parameters before they are used in include statements. Additionally, implementing input validation controls that reject suspicious URL patterns and implementing proper parameter sanitization techniques can prevent exploitation attempts. Organizations should also consider implementing web application firewalls to detect and block malicious requests targeting these specific parameter names. The vulnerability highlights the importance of following secure coding practices such as those outlined in the OWASP Secure Coding Practices, particularly regarding input validation and output encoding. Implementation of principle of least privilege and regular security assessments can help reduce the attack surface and prevent similar vulnerabilities from emerging in the future. Security teams should also establish monitoring procedures to detect unusual file inclusion patterns and unauthorized access attempts that may indicate exploitation of this vulnerability.