CVE-2022-25487 in Atom CMS
Summary
by MITRE • 03/15/2022
Atom CMS v2.0 was discovered to contain a remote code execution (RCE) vulnerability via /admin/uploads.php.
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Analysis
by VulDB Data Team • 03/18/2022
The vulnerability CVE-2022-25487 represents a critical remote code execution flaw in Atom CMS version 2.0 that resides within the administrative upload functionality at /admin/uploads.php. This vulnerability exposes the system to unauthorized remote exploitation where malicious actors can execute arbitrary code on the target server with the privileges of the web application. The flaw stems from insufficient input validation and sanitization within the file upload mechanism, allowing attackers to bypass security restrictions and upload malicious files that can be executed as part of the CMS's normal operation. The vulnerability directly maps to CWE-434 which describes insecure file upload vulnerabilities where the application accepts files without proper validation, and it aligns with ATT&CK technique T1190 which covers exploiting vulnerabilities in remote services through malicious file uploads.
The technical exploitation of this vulnerability occurs when an attacker uploads a specially crafted file through the /admin/uploads.php endpoint without proper authentication or authorization. The CMS fails to properly validate the file type, content, or extension, enabling the upload of executable scripts or malicious payloads that can be executed by the web server. This typically involves uploading files with extensions like .php, .phtml, or other server-side script extensions that the CMS does not properly restrict. The vulnerability becomes particularly dangerous when combined with the administrative access point, as it allows attackers to gain full control over the CMS installation and potentially the underlying server infrastructure. The lack of proper file validation creates a pathway for attackers to establish persistent access, escalate privileges, and potentially use the compromised system as a staging ground for further attacks within the network.
The operational impact of CVE-2022-25487 extends beyond immediate system compromise to include potential data breaches, service disruption, and lateral movement within network environments. Once an attacker successfully executes code on the server, they can access all CMS data including user credentials, content management information, and potentially sensitive organizational data stored within the system. The vulnerability also provides attackers with a persistent backdoor that can be used for long-term access, making it particularly dangerous for organizations that rely on the CMS for critical operations. Additionally, the compromise of a CMS instance can lead to reputation damage, regulatory compliance violations, and potential legal consequences depending on the nature of data processed by the affected system. Organizations may also face extended recovery times and costs associated with forensic analysis, system restoration, and security remediation efforts.
Mitigation strategies for CVE-2022-25487 should focus on immediate patching of the Atom CMS to version 2.1 or later where the vulnerability has been addressed through proper input validation and file type restrictions. Organizations should implement comprehensive file upload restrictions including whitelisting of allowed file extensions, mandatory file type checking, and content validation to prevent execution of malicious code. Network-level protections such as web application firewalls and intrusion detection systems should be configured to monitor and block suspicious upload attempts to the /admin/uploads.php endpoint. Access controls must be strengthened to ensure that only authorized administrators can access administrative functions, and multi-factor authentication should be implemented where possible. Regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other applications and systems within the organization's infrastructure. The remediation process should also include monitoring for any signs of exploitation, such as unusual file uploads, suspicious network traffic patterns, or unauthorized access attempts to administrative interfaces.