CVE-2019-0004 in ATP
Summary
by MITRE
On Juniper ATP, the API key and the device key are logged in a file readable by authenticated local users. These keys are used for performing critical operations on the WebUI interface. This issue affects Juniper ATP 5.0 versions prior to 5.0.3.
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Analysis
by VulDB Data Team • 07/01/2023
This vulnerability exists within Juniper ATP version 5.0 prior to 5.0.3 where sensitive authentication credentials are improperly logged in files accessible to authenticated local users. The flaw represents a critical security oversight that undermines the integrity of the device's authentication mechanisms and exposes privileged access tokens to unauthorized local entities. The API key and device key are stored in plaintext within log files, creating an avenue for privilege escalation and unauthorized administrative access to the WebUI interface. This configuration violates fundamental security principles by failing to implement proper credential sanitization and access controls for sensitive data storage.
The technical implementation of this vulnerability stems from inadequate logging practices where authentication tokens are written to disk without proper obfuscation or access restrictions. According to CWE-312, this represents a weakness in which sensitive data is stored in a manner that makes it accessible to unauthorized users. The issue creates a path for local privilege escalation attacks where authenticated users can read these credentials and subsequently perform administrative operations through the WebUI interface. The vulnerability directly impacts the principle of least privilege by allowing local users to access resources they should not be authorized to reach, effectively bypassing the normal authentication flow.
Operationally, this vulnerability enables authenticated local users to gain elevated privileges and perform critical administrative functions through the WebUI interface. Attackers exploiting this weakness can leverage the stolen API and device keys to execute commands, modify configurations, or access sensitive data without proper authorization. The impact extends beyond simple credential theft as it allows for persistent access to the device and potentially broader network compromise. This vulnerability aligns with ATT&CK technique T1078 which covers legitimate credentials usage and T1548.001 which covers abuse of service accounts. The exposure of these keys could lead to complete device compromise and potential lateral movement within the network environment.
Mitigation strategies should focus on immediate remediation through updating to Juniper ATP 5.0.3 or later versions where the logging issue has been addressed. System administrators must implement proper access controls for log files and ensure that sensitive credentials are not stored in plaintext formats. The solution should include configuring file permissions to restrict access to log files containing authentication tokens, implementing credential rotation procedures, and establishing monitoring for unauthorized access attempts to sensitive system files. Additionally, organizations should conduct regular security audits to identify similar logging vulnerabilities and ensure that all authentication tokens are properly handled according to security best practices. The fix typically involves modifying the logging mechanism to either sanitize sensitive data before writing to logs or to implement proper file access controls that prevent unauthorized local access to credential-containing files.