CVE-2018-2463 in Hybris Commerce
Summary
by MITRE
The Omni Commerce Connect API (OCC) of SAP Hybris Commerce, versions 6.*, is vulnerable to server-side request forgery (SSRF) attacks. This is due to a misconfiguration of XML parser that is used in the server-side implementation of OCC.
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Analysis
by VulDB Data Team • 03/22/2020
The vulnerability identified as CVE-2018-2463 affects the Omni Commerce Connect API (OCC) within SAP Hybris Commerce version 6.* systems, representing a critical server-side request forgery flaw that enables remote attackers to manipulate the application's behavior through crafted requests. This vulnerability specifically stems from improper XML parser configuration within the server-side OCC implementation, creating a pathway for malicious actors to bypass intended security controls and access internal resources that should remain protected from external access.
The technical root cause of this vulnerability lies in the XML parser's misconfiguration, which fails to properly validate or sanitize input data before processing. When the OCC API processes incoming requests containing XML content, the improperly configured parser does not adequately restrict external entity references or prevent access to internal network resources. This misconfiguration allows attackers to construct malicious requests that can force the server to make unintended requests to internal systems, effectively enabling unauthorized access to backend services, databases, or other sensitive internal components that are typically isolated from direct external exposure.
From an operational perspective, this SSRF vulnerability presents significant risk to organizations using SAP Hybris Commerce systems, as it can lead to unauthorized data access, internal network reconnaissance, and potential lateral movement within the infrastructure. Attackers can leverage this vulnerability to probe internal network services, access sensitive data stored within internal databases, or even escalate privileges by targeting other vulnerable internal systems. The impact extends beyond simple data theft, as successful exploitation can enable complete compromise of the affected system and potentially broader access to the organization's infrastructure.
The vulnerability aligns with CWE-918, which specifically addresses server-side request forgery in web applications, and demonstrates how improper input validation in XML processing can create dangerous attack vectors. From an ATT&CK framework perspective, this vulnerability maps to techniques involving initial access through web application exploitation and privilege escalation via internal network reconnaissance, making it particularly dangerous in enterprise environments where internal network segmentation may not be sufficient to prevent lateral movement.
Organizations should implement immediate mitigations including updating to patched versions of SAP Hybris Commerce, implementing strict XML parser configuration that disables external entity processing, and deploying network segmentation controls to limit access to internal resources. Additional protective measures should include monitoring for suspicious XML processing activities, implementing web application firewalls with SSRF detection capabilities, and conducting thorough security assessments of all API endpoints to identify similar misconfigurations that could provide similar attack vectors. The vulnerability underscores the importance of proper input validation and secure configuration management in web application security, particularly when dealing with XML processing components that require careful handling to prevent unauthorized access to internal resources.