CVE-2016-4017 in HANA
Summary
by MITRE
The Data Provisioning Agent (aka DP Agent) in SAP HANA allows remote attackers to cause a denial of service (process crash) via unspecified vectors, aka SAP Security Note 2262710.
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Analysis
by VulDB Data Team • 10/08/2018
The vulnerability identified as CVE-2016-4017 affects the Data Provisioning Agent component within SAP HANA systems, representing a critical denial of service weakness that enables remote attackers to disrupt system operations. This flaw exists within the DP Agent module responsible for data provisioning and management functions, making it a significant concern for organizations relying on SAP HANA for enterprise data processing. The vulnerability manifests through unspecified attack vectors that allow adversaries to trigger process crashes, effectively causing service interruptions that can impact business continuity and data availability. SAP HANA environments are widely deployed across enterprise infrastructures for high-performance data processing and analytics, making this vulnerability particularly dangerous as it could affect critical business operations and data services.
The technical nature of this vulnerability falls under CWE-400, which categorizes it as an Uncontrolled Resource Consumption or DoS condition, specifically within the context of process or service disruption. The flaw operates by exploiting weaknesses in the Data Provisioning Agent's handling of incoming requests or data processing operations, where improper input validation or resource management leads to system instability. Attackers can leverage this vulnerability remotely without requiring authentication, making it particularly dangerous as it can be exploited from external networks. The process crash occurs when the agent encounters malformed or specially crafted input that causes it to terminate unexpectedly, leading to service unavailability for legitimate users and potentially creating opportunities for further exploitation attempts.
From an operational perspective, this vulnerability presents substantial risk to enterprise environments that depend on SAP HANA for critical data operations and business intelligence functions. The denial of service condition can result in complete service interruption, forcing organizations to implement emergency response procedures and potentially impacting downstream applications that rely on HANA data services. The remote exploitability means that attackers do not need physical access or network proximity to the affected systems, expanding the attack surface significantly. Organizations may experience service degradation, data access interruptions, and potential business disruption during exploitation periods. The impact extends beyond immediate service availability as system administrators must investigate and remediate the issue, often requiring system restarts and potential data recovery procedures.
The recommended mitigation strategies for CVE-2016-4017 involve implementing the security patch provided by SAP in their Security Note 2262710, which addresses the underlying vulnerability in the Data Provisioning Agent component. Organizations should prioritize patch management processes and ensure timely deployment of SAP security updates across all affected systems. Network segmentation and access controls can provide additional defensive layers by limiting exposure of vulnerable systems to untrusted networks. Monitoring and logging configurations should be enhanced to detect anomalous behavior patterns that might indicate exploitation attempts. Regular vulnerability assessments and penetration testing help identify additional weaknesses that could be exploited in conjunction with this vulnerability. The ATT&CK framework categorizes this vulnerability under T1499.004 - Endpoint Denial of Service, emphasizing the importance of endpoint protection and resource management controls to prevent such exploitation scenarios.