CVE-2017-2325 in NorthStar Controller Application
Summary
by MITRE
A buffer overflow vulnerability in Juniper Networks NorthStar Controller Application prior to version 2.1.0 Service Pack 1 may allow an authenticated malicious user to cause a buffer overflow leading to a denial of service.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 04/24/2017
The buffer overflow vulnerability identified as CVE-2017-2325 affects the Juniper Networks NorthStar Controller Application, a critical component in network infrastructure management that orchestrates and controls network resources. This vulnerability resides within the application's handling of user input, specifically when processing data that exceeds allocated buffer boundaries. The flaw represents a classic security weakness that has been documented under CWE-121, which describes buffer overflow conditions where insufficient boundary checking allows attackers to overwrite adjacent memory locations. The NorthStar Controller serves as a central management platform for Juniper's routing and switching equipment, making this vulnerability particularly concerning for enterprise and service provider networks that rely on its functionality for critical operations.
The technical implementation of this vulnerability occurs when an authenticated malicious user submits specially crafted input to the NorthStar Controller application. The application fails to properly validate the length of incoming data before copying it into fixed-size buffers, creating an opportunity for memory corruption. This flaw allows an attacker to overwrite adjacent memory locations, potentially leading to arbitrary code execution or more commonly, application crashes and system instability. The vulnerability specifically impacts versions prior to 2.1.0 Service Pack 1, indicating that Juniper had not yet addressed this particular memory handling issue in their codebase. The buffer overflow condition can be triggered through various application interfaces that accept user input, making it a significant concern for administrators who may not be aware of the specific attack vectors available to exploit this weakness.
From an operational perspective, this vulnerability creates substantial risk for organizations relying on Juniper's NorthStar Controller for network management. The potential for denial of service represents a critical operational impact that can disrupt network management functions and potentially cascade into broader network outages. When the application crashes due to buffer overflow, network administrators lose access to critical control plane functionality, which can delay incident response and network troubleshooting activities. The authenticated nature of the vulnerability means that only users with valid credentials can exploit this weakness, but this requirement does not significantly reduce the risk since compromised accounts or insider threats could still leverage this vulnerability. Organizations may experience service degradation, increased administrative overhead, and potential business disruption during the time when the application is unstable or unavailable, with the severity of impact directly correlating to the criticality of the network management functions being performed.
The mitigation strategy for CVE-2017-2325 primarily involves applying the vendor-provided security update that addresses the buffer overflow condition in the NorthStar Controller application. Juniper released Service Pack 1 for version 2.1.0 to resolve this vulnerability, and organizations should immediately implement this patch to eliminate the risk of exploitation. Network administrators should also consider implementing additional security controls such as access restrictions to limit the number of users with valid credentials who can interact with the NorthStar Controller, thereby reducing the attack surface. Monitoring for unusual application behavior or crash patterns can help detect potential exploitation attempts, while network segmentation can limit the impact if an attacker does successfully exploit this vulnerability. From a threat modeling perspective, this vulnerability aligns with ATT&CK technique T1203, which describes exploitation of software vulnerabilities for privilege escalation and system compromise. Organizations should also review their incident response procedures to ensure they can quickly identify and respond to denial of service conditions that may result from this vulnerability, as the impact extends beyond simple application instability to potentially affect network availability and operational continuity.