CVE-2014-6451 in Junos
Summary
by MITRE
J-Web in Juniper vSRX virtual firewalls with Junos OS before 15.1X49-D20 allows remote attackers to cause a denial of service (system reboot) via unspecified vectors.
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Analysis
by VulDB Data Team • 06/22/2022
The CVE-2014-6451 vulnerability affects J-Web interfaces within Juniper vSRX virtual firewalls running Junos OS versions prior to 15.1X49-D20. This represents a critical denial of service weakness that can be exploited remotely by attackers to force system reboots without requiring authentication or privileged access. The vulnerability resides in the web-based management interface that administrators use to configure and monitor the firewall appliances, making it particularly concerning for network security operations. The unspecified vectors suggest that multiple attack paths could potentially trigger the system instability, indicating a fundamental flaw in the web interface's input handling or resource management mechanisms.
This vulnerability aligns with CWE-119 which describes weaknesses in the handling of memory or resources that can lead to system instability and denial of service conditions. The flaw demonstrates characteristics consistent with improper input validation and resource exhaustion issues that have been documented in web application security frameworks. The attack vector operates entirely through the network without requiring physical access or elevated privileges, making it accessible to a broad range of potential adversaries. The impact extends beyond simple service interruption as system reboots can disrupt network connectivity and potentially expose the network to additional attack windows during recovery periods.
From an operational perspective, this vulnerability creates significant risk for organizations relying on Juniper vSRX appliances for network security. The remote exploitation capability means that attackers can target these systems from anywhere on the internet, potentially causing cascading failures in network infrastructure if multiple appliances are affected. The vulnerability affects virtual firewall implementations that are commonly deployed in cloud environments and enterprise networks where availability is critical. The lack of authentication requirements for exploitation further compounds the risk as it eliminates the need for credential compromise or privilege escalation attacks.
The attack pattern associated with CVE-2014-6451 corresponds to techniques found in the MITRE ATT&CK framework under the denial of service category, specifically targeting network infrastructure components. Organizations should consider this vulnerability as part of broader network security assessments and incident response planning. The remediation approach requires immediate deployment of Junos OS patches to version 15.1X49-D20 or later, which would address the underlying system instability. Security teams should also implement network segmentation to limit exposure of affected systems and establish monitoring procedures to detect potential exploitation attempts. Additionally, administrators should verify that web management interfaces are properly secured and that unnecessary services are disabled to reduce the attack surface. The vulnerability highlights the importance of maintaining up-to-date security patches and implementing robust vulnerability management processes to prevent similar issues from affecting critical network infrastructure components.