CVE-2020-4101 in Digital Experience
Summary
by MITRE
"HCL Digital Experience is susceptible to Server Side Request Forgery."
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Analysis
by VulDB Data Team • 06/12/2020
The vulnerability identified as CVE-2020-4101 affects HCL Digital Experience, a web content management platform that enables organizations to create, manage, and deliver digital experiences across multiple channels. This particular weakness manifests as a Server Side Request Forgery (SSRF) vulnerability, which represents a critical security flaw that allows attackers to manipulate the server's behavior to make unauthorized requests to internal or external systems. The vulnerability stems from insufficient validation of user-supplied input that is processed by the server-side components of the digital experience platform.
SSRF vulnerabilities occur when an application fails to properly validate or sanitize user-provided data that is used to construct HTTP requests to other systems. In the context of HCL Digital Experience, this flaw likely exists within the platform's content delivery mechanisms or API endpoints that handle external resource references. Attackers can exploit this vulnerability by crafting malicious requests that cause the server to make unintended connections to internal network resources, external systems, or even to the attacker's own infrastructure. The vulnerability is classified under CWE-918 as a Server-Side Request Forgery, which is a well-documented weakness in web applications where the server is tricked into making arbitrary HTTP requests based on user input.
The operational impact of this vulnerability is significant for organizations using HCL Digital Experience, as it can potentially allow attackers to bypass network security controls and gain access to internal systems that would normally be protected by firewalls or network segmentation. An attacker could leverage this vulnerability to perform reconnaissance activities by scanning internal network services, access internal APIs, or even exfiltrate sensitive data from behind network boundaries. The attack surface expands when considering that the platform may be integrated with various enterprise systems, databases, or other services that could be accessed through the compromised server. This vulnerability aligns with ATT&CK technique T1071.004 for Application Layer Protocol: DNS, as attackers might use the SSRF capability to perform DNS tunneling or other network reconnaissance activities.
Mitigation strategies for CVE-2020-4101 should focus on implementing robust input validation and sanitization mechanisms throughout the HCL Digital Experience platform. Organizations should ensure that all user-supplied input is properly validated and that the platform does not accept or process external URLs without proper authorization and validation. Network-level controls such as firewalls and proxy configurations should be implemented to restrict outbound connections from the server, particularly to internal network segments. Additionally, organizations should consider implementing web application firewalls to detect and block suspicious patterns of requests that may indicate SSRF attempts. The platform should be updated to the latest version that includes patches addressing this specific vulnerability, and security teams should monitor for any anomalous network activity that might indicate exploitation attempts. Regular security assessments and penetration testing should be conducted to verify that the implemented mitigations are effective and that no other similar vulnerabilities exist within the platform's architecture.