CVE-2025-59976 in Junos Space
Summary
by MITRE • 10/09/2025
An arbitrary file download vulnerability in the web interface of Juniper Networks Junos Space allows a network-based authenticated attacker using a crafted GET method to access any file on the file system. Using specially crafted GET methods, an attacker can gain access to files beyond the file path normally allowed by the JBoss daemon. These files could contain sensitive information restricted from access by low-privileged users.This issue affects all versions of Junos Space before 24.1R3.
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Analysis
by VulDB Data Team • 10/09/2025
This vulnerability represents a critical arbitrary file download flaw in Juniper Networks Junos Space platform that enables authenticated attackers to bypass normal file system access controls through crafted GET requests. The vulnerability stems from insufficient input validation and path traversal mechanisms within the web interface component that processes file download requests. Attackers can exploit this weakness by constructing malicious GET method parameters that manipulate the file path resolution logic, allowing them to access files outside the intended directory boundaries. The flaw specifically affects the JBoss daemon implementation where file access controls should normally restrict user privileges but are circumvented through improper path validation. This issue impacts all Junos Space versions prior to 24.1R3, indicating a persistent flaw in the platform's security architecture that has remained unaddressed across multiple releases.
The technical exploitation of this vulnerability occurs through the manipulation of file path parameters in HTTP GET requests, enabling attackers to traverse the file system hierarchy beyond normal access boundaries. The attack vector leverages the lack of proper sanitization of user-supplied input before file system operations are performed, creating a classic path traversal vulnerability that maps to CWE-22. An authenticated attacker with minimal privileges can leverage this weakness to access sensitive system files, configuration data, and potentially credential stores that should normally be restricted. The vulnerability's impact extends beyond simple information disclosure as it can expose system internals, application configuration files, and potentially sensitive data that could aid in further exploitation attempts. The JBoss daemon's file access controls are effectively bypassed, allowing unauthorized access to files that typically require elevated privileges or specific authorization mechanisms.
The operational impact of this vulnerability is severe as it provides attackers with unauthorized access to potentially sensitive system information that could compromise the entire Junos Space platform. The ability to download arbitrary files means that attackers can access not only application configuration files but also system logs, backup files, and potentially database contents that contain user credentials or system keys. This vulnerability can facilitate further attacks by providing attackers with information about the system architecture, application behavior, and potential weak points in the security implementation. The authenticated nature of the attack means that attackers need only valid credentials to exploit this weakness, making it particularly dangerous in environments where credential compromise is possible. The exposure of sensitive information through this vulnerability could lead to privilege escalation attempts or lateral movement within the network infrastructure managed by Junos Space.
Organizations affected by this vulnerability should immediately implement the security patches released by Juniper Networks for version 24.1R3 and subsequent releases. The mitigation strategy should include comprehensive monitoring of file access patterns and HTTP requests to detect potential exploitation attempts. Network segmentation and access control measures should be enhanced to limit the blast radius of potential exploitation. Security teams should conduct thorough audits of system files and configurations to identify any unauthorized access that may have occurred. The implementation of web application firewalls and input validation controls can provide additional layers of protection against similar path traversal attacks. Regular security assessments and vulnerability scanning should be performed to ensure that other potential weaknesses are identified and addressed. This vulnerability highlights the importance of proper input validation and access control implementation in web applications, particularly those handling sensitive system information and requiring authentication mechanisms.