CVE-2022-24652 in SentCMS
Summary
by MITRE • 03/10/2022
sentcms 4.0.x allows remote attackers to cause arbitrary file uploads through an unauthorized file upload interface, resulting in php code execution in /admin/upload/upload.
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Analysis
by VulDB Data Team • 03/12/2022
The vulnerability identified as CVE-2022-24652 affects sentcms version 4.0.x and represents a critical security flaw that enables remote attackers to execute arbitrary code through unauthorized file upload capabilities. This vulnerability specifically targets the administrative upload interface located at /admin/upload/upload, where the system fails to properly validate file types and upload restrictions. The flaw allows attackers to bypass authentication mechanisms and upload malicious files, potentially leading to complete system compromise. The vulnerability stems from insufficient input validation and access control measures within the content management system's upload functionality.
The technical implementation of this vulnerability involves a lack of proper file type checking and authorization validation within the upload handler. Attackers can exploit this by crafting malicious payloads that appear to be legitimate files while actually containing php code that executes on the server when processed. This type of vulnerability falls under CWE-434 which specifically addresses "Unrestricted Upload of File with Dangerous Type" and represents a common pattern in web application security flaws. The vulnerability enables attackers to achieve persistent code execution on the target system, potentially allowing them to establish backdoors, exfiltrate data, or escalate privileges within the application environment.
The operational impact of this vulnerability extends beyond simple code execution to encompass complete system compromise and potential data breaches. Remote attackers can leverage this flaw to gain unauthorized access to sensitive server resources, potentially leading to data loss, service disruption, or unauthorized access to other systems within the network. The vulnerability's exploitation does not require elevated privileges, making it particularly dangerous as it can be exploited by anyone who can access the administrative upload interface. This represents a significant risk to organizations relying on sentcms 4.0.x for content management, as the vulnerability can be exploited from any location with internet access.
Mitigation strategies for CVE-2022-24652 should focus on immediate patching of the affected software version to address the authentication bypass and file upload validation issues. Organizations should implement strict file type validation mechanisms that reject executable code files and enforce proper access controls on upload interfaces. The implementation of file extension whitelisting, content type checking, and secure file storage practices can significantly reduce the risk of exploitation. Additionally, network segmentation and monitoring of upload activities can provide early detection of potential abuse. This vulnerability aligns with ATT&CK technique T1190 which covers "Exploit Public-Facing Application" and demonstrates the importance of proper input validation and access control in preventing remote code execution scenarios. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other components of the system infrastructure.