CVE-2020-9048 in Web Client
Summary
by MITRE • 10/09/2020
A vulnerability in victor Web Client versions up to and including v5.4.1 could allow a remote unauthenticated attacker to delete arbitrary files on the system or render the system unusable by conducting a Denial of Service attack.
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Analysis
by VulDB Data Team • 11/17/2020
The vulnerability identified as CVE-2020-9048 affects victor Web Client software versions up to and including v5.4.1, representing a critical security flaw that exposes systems to remote exploitation without authentication requirements. This vulnerability resides within the web client implementation and demonstrates a significant weakness in the application's access control mechanisms, allowing unauthorized actors to manipulate system files and potentially disrupt service availability. The flaw specifically enables attackers to perform arbitrary file deletion operations and execute denial of service conditions, both of which can severely compromise system integrity and operational continuity.
This vulnerability manifests due to insufficient input validation and improper access controls within the victor Web Client application. The flaw allows remote unauthenticated attackers to leverage specific API endpoints or web interfaces to execute file deletion commands against the underlying operating system. The absence of proper authentication checks and authorization mechanisms means that any remote entity can potentially exploit this weakness to remove critical system files or directories. From a technical perspective, this represents a classic path traversal or privilege escalation vulnerability that bypasses normal security boundaries, potentially leading to complete system compromise if critical system files are targeted.
The operational impact of CVE-2020-9048 extends beyond simple file deletion capabilities to encompass broader system disruption and potential data loss scenarios. Attackers can leverage this vulnerability to render systems unusable through denial of service conditions, effectively preventing legitimate users from accessing critical services. The vulnerability's remote nature means that attackers do not require physical access or local credentials to exploit the flaw, making it particularly dangerous in networked environments where web clients are exposed to external traffic. Organizations running affected victor Web Client versions face significant risk of unauthorized system modifications, service interruptions, and potential data destruction that could impact business operations and regulatory compliance requirements.
Security professionals should recognize this vulnerability as aligned with CWE-22 Path Traversal and CWE-284 Improper Access Control categories, which directly relate to the lack of proper input validation and authorization checks. The ATT&CK framework would classify this vulnerability under T1059 Command and Scripting Interpreter and potentially T1489 Service Stop, as attackers could leverage the file deletion capabilities to disrupt system services or execute commands through compromised web interfaces. Organizations should prioritize immediate remediation through software updates to versions that address the authentication and access control weaknesses. Additionally, network segmentation and firewall rules should be implemented to restrict access to affected web client interfaces, while monitoring systems should be deployed to detect anomalous file deletion activities that may indicate exploitation attempts.