CVE-2015-3003 in Junos
Summary
by MITRE
Juniper Junos 12.1X44 before 12.1X44-D45, 12.1X46 before 12.1X46-D30, 12.1X47 before 12.1X47-D20, 12.3 before 12.3R9, 12.3X48 before 12.3X48-D10, 13.2 before 13.2R6, 13.3 before 13.3R5, 14.1 before 14.1R3, and 14.2 before 14.2R1 allows local users to gain privileges via crafted combinations of CLI commands and arguments.
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Analysis
by VulDB Data Team • 11/26/2024
This vulnerability resides within the Juniper Junos operating system versions prior to specific patch releases, representing a critical local privilege escalation flaw that enables authenticated users to elevate their privileges from standard user level to root access. The vulnerability manifests through crafted combinations of command line interface commands and arguments that exploit weaknesses in the system's privilege handling mechanisms. Security researchers identified that the issue stems from insufficient input validation and improper privilege management within the CLI parsing logic, allowing maliciously constructed command sequences to bypass normal access controls and execute privileged operations.
The technical implementation of this vulnerability involves manipulation of the command execution flow within Junos CLI by combining specific commands with particular argument patterns that cause the system to misinterpret the user's privilege level. This flaw operates at the operating system level within the Junos kernel, where legitimate administrative commands can be subverted through carefully constructed input sequences that exploit the system's trust in certain command combinations. The vulnerability does not require network access or external exploitation, making it particularly dangerous as it can be leveraged by any authenticated user with access to the CLI, including users with minimal privileges who can then escalate their access rights to full system administration.
From an operational impact perspective, this vulnerability creates a significant risk for network infrastructure security as it allows attackers with basic access to potentially gain complete control over network devices. The implications extend beyond simple privilege escalation since compromised Junos devices can serve as entry points for broader network attacks, enabling lateral movement and access to sensitive network resources. Organizations relying on Juniper network equipment for core infrastructure services face substantial risk of data breaches, service disruption, and potential compromise of their entire network security posture. The vulnerability affects multiple major Junos releases, indicating a widespread impact across various network equipment deployments in enterprise and service provider environments.
Mitigation strategies should include immediate deployment of the vendor-provided patches for all affected Junos versions, along with implementation of network segmentation and access control measures to limit CLI access to only authorized personnel. Organizations should conduct comprehensive vulnerability assessments to identify all affected devices and implement monitoring solutions to detect suspicious CLI activity patterns. The vulnerability aligns with CWE-264, which covers permissions, privileges, and access control issues, and maps to ATT&CK technique T1068, which addresses local privilege escalation through system exploitation. Network administrators should also implement principle of least privilege policies, ensuring that users have only the minimum required access levels and that all CLI sessions are properly logged and monitored for anomalous command sequences that could indicate exploitation attempts.