CVE-2022-2740 in Company Website CMS
Summary
by MITRE • 08/11/2022
A vulnerability was found in SourceCodester Company Website CMS. It has been declared as critical. This vulnerability affects unknown code of the file /dashboard/add-blog.php of the component Add Blog. The manipulation of the argument ufile leads to unrestricted upload. The attack can be initiated remotely. VDB-205882 is the identifier assigned to this vulnerability.
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Analysis
by VulDB Data Team • 08/31/2022
The vulnerability identified as CVE-2022-2740 represents a critical security flaw within the SourceCodester Company Website CMS platform that exposes organizations to significant operational risks. This weakness specifically targets the /dashboard/add-blog.php component, where the unrestricted file upload functionality creates a dangerous attack vector for malicious actors. The vulnerability stems from inadequate input validation and sanitization mechanisms that fail to properly restrict file types and content, allowing attackers to bypass security controls and upload potentially harmful files to the target system.
The technical exploitation of this vulnerability occurs through manipulation of the ufile argument parameter within the Add Blog functionality. When an attacker submits a malicious file through this interface, the system fails to perform adequate validation checks on file extensions, MIME types, or content signatures. This oversight enables the upload of executable scripts, malicious binaries, or other harmful file types that can be executed within the web application context. The vulnerability's remote exploitability means that attackers can leverage this flaw from external networks without requiring physical access or local system privileges, significantly expanding the potential attack surface and threat impact.
The operational implications of CVE-2022-2740 extend beyond simple unauthorized file uploads, as this vulnerability can lead to complete system compromise and persistent access within the affected environment. Attackers can leverage unrestricted upload capabilities to deploy web shells, reverse shells, or other malicious payloads that establish backdoor access and maintain long-term presence within the compromised infrastructure. The vulnerability aligns with CWE-434, which specifically addresses insecure file upload scenarios where applications accept files without proper validation, and corresponds to ATT&CK technique T1190, which covers exploiting vulnerabilities in web applications. Organizations utilizing this CMS are particularly vulnerable to data exfiltration, service disruption, and lateral movement attacks that can propagate throughout their network infrastructure.
Organizations must implement immediate mitigation strategies to address this critical vulnerability, including restricting file upload capabilities, implementing comprehensive input validation, and deploying web application firewalls to monitor and filter suspicious upload attempts. The recommended remediation approach involves enforcing strict file type restrictions, validating file content through multiple verification mechanisms, and implementing proper access controls for administrative interfaces. Additionally, regular security assessments and penetration testing should be conducted to identify similar vulnerabilities within the application stack, while network segmentation and monitoring solutions should be deployed to detect anomalous upload activities and potential exploitation attempts. The vulnerability's classification as critical underscores the urgency of immediate remediation efforts to prevent unauthorized access and potential data breaches within affected systems.