CVE-2024-34315 is a local file inclusion vulnerability identified in CmsEasy version 7.7.7.9, a content management system widely used for website administration. The vulnerability exists in the fckedit_action method of the /admin/template_admin.php file, where the file_get_contents function is improperly secured. This function is used to read file contents but fails to adequately sanitize user-supplied input, allowing attackers to manipulate the file path parameter. By exploiting this flaw, an unauthenticated attacker can craft requests that traverse directories and read arbitrary files on the server, such as configuration files, password files, or other sensitive data. The vulnerability is categorized as CWE-22 (Improper Limitation of a Pathname to a Restricted Directory), a common and critical security weakness. The CVSS v3.1 base score is 7.5, reflecting high severity due to network attack vector, no required privileges, and no user interaction needed. The impact is limited to confidentiality as the vulnerability allows reading files but does not permit modification or denial of service. No patches or official fixes have been linked yet, and no public exploits are known at this time, but the ease of exploitation and potential data exposure make this a significant threat for affected CmsEasy installations.

The primary impact of CVE-2024-34315 is unauthorized disclosure of sensitive information. Attackers can read arbitrary files on the server, potentially exposing credentials, configuration details, private keys, or other confidential data. This can lead to further compromise, including privilege escalation or lateral movement within the network. Since the vulnerability requires no authentication and no user interaction, it can be exploited remotely by any attacker aware of the flaw. Organizations running CmsEasy 7.7.7.9 or similar vulnerable versions face risks of data breaches, regulatory non-compliance, and reputational damage. While the vulnerability does not directly affect system integrity or availability, the confidentiality breach alone is critical for environments handling sensitive or personal data. The lack of known exploits currently provides a small window for remediation before active exploitation emerges.

1. Immediate mitigation involves restricting access to the /admin/template_admin.php endpoint via network controls such as firewalls or web application firewalls (WAFs) to trusted IP addresses only. 2. Implement input validation and sanitization on parameters passed to file_get_contents to prevent directory traversal sequences (e.g., ../). 3. Monitor web server logs for suspicious requests targeting the fckedit_action method or unusual file path patterns. 4. If possible, disable or restrict the vulnerable functionality until a vendor patch is available. 5. Keep the CmsEasy CMS updated and apply official patches promptly once released. 6. Employ file system permissions to limit the web server's read access to only necessary files, minimizing the impact of arbitrary file reads. 7. Conduct regular security assessments and penetration tests focusing on file inclusion and path traversal vulnerabilities. 8. Educate administrators about the risks of exposing administrative interfaces publicly without proper access controls.