CVE-2014-0613 in Junos
Summary
by MITRE
The XNM command processor in Juniper Junos 10.4 before 10.4R16, 11.4 before 11.4R10, 12.1R before 12.1R8-S2, 12.1X44 before 12.1X44-D30, 12.1X45 before 12.1X45-D20, 12.1X46 before 12.1X46-D10, 12.2 before 12.2R7, 12.3 before 12.3R5, 13.1 before 13.1R3-S1, 13.2 before 13.2R2-S2, and 13.3 before 13.3R1, when xnm-ssl or xnm-clear-text is enabled, allows remote attackers to cause a denial of service (memory consumption) via unspecified vectors.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 06/04/2021
The vulnerability identified as CVE-2014-0613 represents a critical denial of service flaw within the XNM command processor of Juniper Junos operating systems. This weakness affects multiple versions of the Junos OS across several release branches, including 10.4, 11.4, 12.1, 12.1X44, 12.1X45, 12.1X46, 12.2, 12.3, 13.1, 13.2, and 13.3, specifically when the xnm-ssl or xnm-clear-text services are enabled. The vulnerability operates at the network management layer and presents a significant risk to network infrastructure integrity.
The technical flaw manifests through unspecified vectors that enable remote attackers to consume excessive memory resources within the XNM command processor. This memory consumption behavior ultimately leads to a denial of service condition where the affected system becomes unresponsive or crashes due to resource exhaustion. The vulnerability is particularly concerning because it operates at the command processing level and can be exploited remotely without requiring authentication, making it accessible to any attacker with network connectivity to the affected device.
The operational impact of this vulnerability extends beyond simple service disruption as it affects critical network management functions that administrators rely upon for device monitoring and configuration. When exploited, the memory consumption can cause the XNM service to become unresponsive, preventing legitimate network management operations from executing properly. This creates a cascading effect where network administrators lose the ability to manage and monitor their devices effectively, potentially leading to extended outages and compromised network security posture. The vulnerability affects the fundamental command processing capabilities of the Junos OS, making it a high-priority issue for network security teams.
Network security professionals should implement immediate mitigations including disabling the xnm-ssl and xnm-clear-text services when not actively required, applying the relevant Juniper security patches released for affected versions, and implementing network segmentation to limit access to management interfaces. The vulnerability aligns with CWE-400 which categorizes memory exhaustion as a common weakness in software systems, and represents a potential entry point for attackers following the ATT&CK technique of denial of service through resource exhaustion. Organizations should also consider implementing monitoring solutions to detect unusual memory consumption patterns that may indicate exploitation attempts, as well as establishing robust patch management processes to ensure timely deployment of security updates across all network infrastructure devices.