CVE-2023-2056 in DedeCMS
Summary
by MITRE • 04/14/2023
A vulnerability was found in DedeCMS up to 5.7.87 and classified as critical. This issue affects the function GetSystemFile of the file module_main.php. The manipulation leads to code injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-225941 was assigned to this vulnerability.
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Analysis
by VulDB Data Team • 05/03/2023
The vulnerability identified as CVE-2023-2056 represents a critical code injection flaw within DedeCMS version 5.7.87 and earlier installations. This vulnerability specifically targets the GetSystemFile function located in the module_main.php file, which serves as a critical component in the content management system's operational framework. The flaw arises from insufficient input validation and sanitization mechanisms within the system's file handling processes, creating an exploitable condition that allows malicious actors to inject arbitrary code into the target environment.
The technical nature of this vulnerability stems from improper handling of user-supplied input parameters within the GetSystemFile function, which processes system file operations without adequate security controls. This weakness enables attackers to manipulate the function's behavior through crafted input that bypasses normal validation procedures. The vulnerability operates at the application layer and can be exploited remotely without requiring authentication, making it particularly dangerous for publicly accessible web applications. The code injection occurs when the system processes file operations, allowing attackers to execute malicious commands with the privileges of the web application, potentially leading to complete system compromise.
The operational impact of CVE-2023-2056 extends beyond simple data theft or service disruption, as successful exploitation can result in full system compromise and persistent backdoor access. Attackers can leverage this vulnerability to execute arbitrary commands on the target server, potentially leading to data exfiltration, system infiltration, and lateral movement within network environments. The public disclosure of exploitation techniques, as indicated by the VDB-225941 identifier, significantly increases the risk profile since threat actors can readily implement attacks without requiring advanced technical skills. Organizations running affected DedeCMS versions face immediate security risks that could result in unauthorized access, data breaches, and potential regulatory compliance violations.
Mitigation strategies for this vulnerability should prioritize immediate patching of affected systems to the latest DedeCMS releases that contain the necessary security fixes. Organizations should implement network segmentation and access controls to limit exposure of vulnerable systems to untrusted networks. Security monitoring should be enhanced to detect anomalous file operations and command execution patterns that may indicate exploitation attempts. The vulnerability aligns with CWE-94, which describes improper control of generation of code, and maps to ATT&CK technique T1059.007 for command and scripting interpreter, specifically focusing on the use of web shell capabilities for persistent access. Regular security assessments and input validation reviews should be conducted to prevent similar vulnerabilities from emerging in other components of the system architecture.