CVE-2014-6447 in Junos OS
Summary
by MITRE
Multiple vulnerabilities exist in Juniper Junos J-Web error handling that may lead to cross site scripting (XSS) issues or crash the J-Web service (DoS). This affects Juniper Junos OS 12.1X44 before 12.1X44-D45, 12.1X46 before 12.1X46-D30, 12.1X47 before 12.1X47-D20, 12.3 before 12.3R8, 12.3X48 before 12.3X48-D10, 13.1 before 13.1R5, 13.2 before 13.2R6, 13.3 before 13.3R4, 14.1 before 14.1R3, 14.1X53 before 14.1X53-D10, 14.2 before 14.2R1, and 15.1 before 15.1R1.
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Analysis
by VulDB Data Team • 09/09/2023
The vulnerability described in CVE-2014-6447 represents a critical security flaw in Juniper Junos OS J-Web interface that encompasses multiple attack vectors including cross site scripting and denial of service conditions. This issue specifically targets the error handling mechanisms within the J-Web component of Junos operating systems, which serves as the web-based management interface for Juniper network devices. The affected versions span across multiple major releases including 12.1X44, 12.1X46, 12.1X47, 12.3, 12.3X48, 13.1, 13.2, 13.3, 14.1, 14.1X53, 14.2, and 15.1, indicating a widespread impact across the Juniper product line. The vulnerability stems from insufficient input validation and improper error handling within the web interface, creating exploitable conditions that adversaries can leverage to compromise system integrity and availability.
The technical implementation of this vulnerability manifests through flawed error handling routines that fail to properly sanitize user-supplied input before processing or displaying it within the web interface. When maliciously crafted input is processed by the J-Web service, the inadequate sanitization allows for the injection of malicious scripts that can execute in the context of authenticated users' browsers. This cross site scripting vulnerability operates under CWE-79 which specifically addresses cross site scripting flaws in web applications, making it particularly dangerous as it can be exploited by attackers to hijack user sessions, steal sensitive information, or perform unauthorized actions on behalf of authenticated users. The DoS component of this vulnerability occurs when malformed input causes the J-Web service to crash or become unresponsive, effectively denying legitimate administrative access to network devices.
Operational impact of CVE-2014-6447 extends beyond simple exploitation as it creates a comprehensive attack surface that can be leveraged by threat actors to gain unauthorized access to network infrastructure. The cross site scripting component allows attackers to execute malicious code in users' browsers, potentially leading to complete compromise of administrative sessions and unauthorized network configuration changes. The denial of service aspect creates availability issues that can disrupt network management operations, potentially leaving network administrators unable to perform critical maintenance or respond to security incidents. Organizations running affected Juniper devices face significant risk of unauthorized access to their network infrastructure, with potential for data exfiltration, network disruption, and compromise of the entire network security posture. The vulnerability affects both the management plane and potentially the data plane of network devices, creating a substantial risk to network operations.
Mitigation strategies for CVE-2014-6447 require immediate patching of affected Juniper devices with the vendor-provided security updates, as these vulnerabilities are exploitable in the wild. Network administrators should implement network segmentation to limit access to J-Web interfaces and restrict administrative access to trusted networks only. Additional protective measures include implementing web application firewalls to filter malicious input and monitoring for unusual patterns in web interface access. The security community should also consider implementing multi-factor authentication for administrative access and establishing strict access controls for J-Web interfaces. Organizations should conduct thorough vulnerability assessments to identify all affected devices and prioritize patching based on risk exposure and business criticality. The remediation process should include comprehensive testing to ensure that patches do not introduce compatibility issues with existing network management workflows. Regular security monitoring and incident response procedures should be established to detect and respond to exploitation attempts targeting these vulnerabilities, as the attack surface remains significant for organizations with unpatched systems.