CVE-2014-3816 in Junos
Summary
by MITRE
Juniper Junos 11.4 before 11.4R12, 12.1 before 12.1R11, 12.1X44 before 12.1X44-D35, 12.1X45 before 12.1X45-D30, 12.1X46 before 12.1X46-D20, 12.1X47 before 12.1X47-D10, 12.2 before 12.2R8-S2, 12.3 before 12.3R7, 13.1 before 13.1R4-S2, 13.2 before 13.2R5, 13.3 before 13.3R2-S2, and 14.1 before 14.1R1 allows remote authenticated users to gain privileges via unspecified combinations of CLI commands and arguments.
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Analysis
by VulDB Data Team • 02/08/2022
The vulnerability described in CVE-2014-3816 represents a significant privilege escalation flaw within Juniper Networks Junos operating system versions spanning multiple release branches. This issue affects a wide range of Junos versions including 11.4 through 14.1 releases, creating a substantial attack surface across numerous network devices deployed in enterprise and service provider environments. The vulnerability specifically targets the command line interface functionality, where authenticated users can exploit unspecified combinations of CLI commands and arguments to escalate their privileges. This type of vulnerability falls under the category of privilege escalation as defined by CWE-269, where an attacker with legitimate access can elevate their permissions to gain higher-level system access. The affected versions represent critical network infrastructure components that form the backbone of many organizations' network security posture.
The technical nature of this vulnerability stems from improper input validation and privilege management within the Junos CLI processing mechanisms. When authenticated users execute specific command sequences or provide particular arguments to CLI functions, the system fails to properly validate the privilege levels associated with these operations. This allows malicious or compromised authenticated users to bypass normal access controls and gain elevated privileges that should be restricted to administrative users only. The unspecified combinations suggest that the flaw exists in how the system processes certain command arguments or sequences, potentially involving parameter manipulation or command injection techniques. The vulnerability's impact is particularly concerning because it requires only authenticated access, meaning that an attacker who has already gained user-level credentials can leverage this flaw to achieve administrative privileges without requiring additional compromise methods.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it fundamentally undermines the security model of Juniper network devices. Organizations relying on these affected Junos versions face the risk of unauthorized administrative access to their network infrastructure, potentially enabling attackers to modify routing configurations, access sensitive network data, or disable security controls. This vulnerability directly impacts the principle of least privilege and could lead to complete network compromise when combined with other attack vectors. The widespread affected versions indicate that this flaw existed across multiple major release lines, suggesting a systemic issue in the privilege management implementation that affected a broad user base. The vulnerability's presence in both older and newer release branches demonstrates that security controls were not properly enforced throughout the software lifecycle.
Mitigation strategies for CVE-2014-3816 should prioritize immediate deployment of the vendor-provided security patches and updates for all affected Junos versions. Organizations must ensure comprehensive patch management procedures are in place to address similar vulnerabilities in the future, particularly focusing on privilege escalation issues within CLI environments. Network segmentation and access control measures should be strengthened to limit the potential impact of authenticated privilege escalation attacks. The implementation of monitoring solutions specifically designed to detect anomalous CLI command patterns or privilege elevation attempts provides additional defense-in-depth measures. Security teams should conduct thorough vulnerability assessments of their Junos deployments to identify any other potential privilege escalation paths within their network infrastructure. This vulnerability aligns with ATT&CK techniques related to privilege escalation and command and control operations, emphasizing the need for comprehensive network security monitoring and incident response procedures. Regular security audits and vulnerability assessments should be performed to identify similar flaws in network operating systems and ensure proper security controls are maintained across all network infrastructure components.