CVE-2017-2317 in NorthStar Controller Application
Summary
by MITRE
A denial of service vulnerability in Juniper Networks NorthStar Controller Application prior to version 2.1.0 Service Pack 1 may allow an unauthenticated, unprivileged, network-based attacker to cause denials of services to underlying database tables leading to potential information disclosure, modification of system states, and partial to full denial of services relying upon data modified by an attacker.
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Analysis
by VulDB Data Team • 04/24/2017
The vulnerability identified as CVE-2017-2317 represents a critical denial of service weakness within Juniper Networks NorthStar Controller Application affecting versions prior to 2.1.0 Service Pack 1. This flaw resides in the application's handling of database table operations and creates a pathway for unauthorized attackers to disrupt system functionality through network-based means without requiring authentication or privileged access. The NorthStar Controller serves as a critical component in network management and orchestration, making this vulnerability particularly concerning for enterprise and service provider networks that rely on its stability and availability.
The technical implementation of this vulnerability stems from insufficient input validation and improper error handling within the database interaction layers of the NorthStar Controller. Attackers can exploit this weakness by crafting malicious database operations that cause the underlying database tables to become corrupted or inaccessible, leading to cascading failures throughout the system. The vulnerability operates at the application layer and leverages network-based attack vectors, allowing remote exploitation without requiring physical access or elevated privileges. This flaw aligns with CWE-129, which describes improper validation of input boundaries, and represents a classic example of how database interaction vulnerabilities can lead to broader system compromise.
The operational impact of CVE-2017-2317 extends beyond simple service disruption to encompass potential information disclosure and modification of critical system states. When the database tables become compromised, the controller application may exhibit unpredictable behavior, including data corruption, partial system failures, and complete service outages. Network administrators face the challenge of maintaining service availability while the vulnerability remains unpatched, as attackers can repeatedly exploit the flaw to maintain persistent disruption. The vulnerability's potential for information disclosure means that sensitive network configuration data and operational information could be exposed, creating additional security implications beyond the immediate denial of service.
Mitigation strategies for this vulnerability require immediate implementation of the vendor-provided patches and updates, specifically targeting the 2.1.0 Service Pack 1 release which contains the necessary fixes. Organizations should implement network segmentation and access controls to limit exposure to the NorthStar Controller application, reducing the attack surface available to potential adversaries. Security monitoring should be enhanced to detect anomalous database activity patterns that may indicate exploitation attempts. From an ATT&CK framework perspective, this vulnerability maps to techniques involving denial of service and privilege escalation through application layer attacks, emphasizing the need for robust application security controls and regular vulnerability assessments to prevent similar weaknesses from being exploited in other network management systems.
The vulnerability demonstrates how seemingly isolated database interaction flaws can create cascading effects throughout complex network management infrastructures, highlighting the importance of comprehensive security testing and regular patch management processes. Organizations relying on network controller applications must establish proactive security measures to identify and remediate such vulnerabilities before they can be exploited by malicious actors. The incident underscores the critical nature of maintaining up-to-date security patches and implementing defense-in-depth strategies to protect mission-critical network infrastructure components from exploitation.