CVE-2023-3057 in YFCMF
Summary
by MITRE • 06/02/2023
A vulnerability was found in YFCMF up to 3.0.4. It has been rated as problematic. This issue affects some unknown processing of the file app/admin/controller/Ajax.php. The manipulation of the argument controllername leads to path traversal: '../filedir'. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-230543.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 06/29/2023
The vulnerability identified as CVE-2023-3057 represents a critical path traversal flaw within the YFCMF content management framework version 3.0.4 and earlier. This security weakness resides in the application's administrative controller component, specifically within the Ajax.php file that handles various backend operations. The vulnerability stems from inadequate input validation and sanitization mechanisms that fail to properly process user-supplied data, creating an exploitable condition that allows attackers to manipulate file system access through crafted input parameters.
The technical implementation of this vulnerability occurs when the application processes the controllername argument within the Ajax.php file without sufficient validation of the input values. When an attacker supplies a malicious value such as '../filedir' as the controllername parameter, the application fails to properly sanitize this input, allowing the path traversal sequence to be interpreted as a legitimate file system navigation command. This flaw enables attackers to traverse the file system hierarchy and potentially access restricted directories or files that should normally be protected from unauthorized access. The vulnerability's classification as remotely exploitable means that attackers can leverage this weakness through network-based attacks without requiring local system access or authentication.
The operational impact of CVE-2023-3057 extends beyond simple information disclosure, as it provides attackers with the capability to potentially access sensitive application files, configuration data, or even execute arbitrary code depending on the system's file permissions. This vulnerability directly maps to CWE-22 Path Traversal and aligns with ATT&CK technique T1083 File and Directory Discovery, as it enables adversaries to enumerate and access files that should remain protected. The public disclosure of this exploit (VDB-230543) significantly increases the risk exposure for affected systems, as security researchers and malicious actors can readily implement the attack vectors without requiring additional reconnaissance or development efforts.
Organizations utilizing YFCMF versions up to 3.0.4 should immediately implement mitigations including input validation and sanitization of all user-supplied parameters, particularly those used in file system operations. The recommended approach involves implementing strict whitelisting of valid controller names and implementing proper path normalization techniques that prevent directory traversal sequences from being interpreted as legitimate file system navigation commands. Additionally, system administrators should ensure that the application operates with minimal required privileges and that appropriate file system permissions are enforced to limit the potential damage from successful exploitation attempts. Regular security updates and patches should be applied as soon as vendor-provided fixes become available, while network segmentation and monitoring solutions should be deployed to detect and prevent unauthorized access attempts targeting this vulnerability.