CVE-2024-29024 in JumpServer
Summary
by MITRE • 03/29/2024
JumpServer is an open source bastion host and an operation and maintenance security audit system. An authenticated user can exploit the Insecure Direct Object Reference (IDOR) vulnerability in the file manager's bulk transfer by manipulating job IDs to upload malicious files, potentially compromising the integrity and security of the system. This vulnerability is fixed in v3.10.6.
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Analysis
by VulDB Data Team • 01/10/2025
The vulnerability identified as CVE-2024-29024 affects JumpServer, an open source bastion host and operation and maintenance security audit system widely used for privileged access management and session recording. This system serves as a critical security control for organizations managing sensitive infrastructure access, making any vulnerability within its attack surface particularly concerning for cybersecurity professionals. The vulnerability manifests as an Insecure Direct Object Reference (IDOR) flaw in the file manager's bulk transfer functionality, which represents a fundamental weakness in the application's access control mechanisms. The IDOR vulnerability classified under CWE-639 allows an authenticated user to manipulate job IDs and gain unauthorized access to file operations that should be restricted to authorized users only. This particular weakness exists in the file management component where the application fails to properly validate user permissions when processing bulk transfer requests, creating a pathway for privilege escalation through direct object manipulation.
The technical exploitation of this vulnerability requires an authenticated user to leverage the application's bulk file transfer functionality by manipulating job identifiers within the system. When a user initiates a bulk transfer operation, the system should validate that the user has proper authorization to access and manipulate the target files. However, due to the IDOR flaw, the system accepts manipulated job IDs without proper access verification, allowing malicious file uploads to occur. This vulnerability directly impacts the integrity and confidentiality of the system as attackers can potentially upload malicious files that could be executed or used to escalate privileges within the JumpServer environment. The operational impact extends beyond simple file manipulation, as compromised file upload capabilities can lead to persistent backdoors, data exfiltration, or further system compromise through lateral movement within the network infrastructure. The vulnerability affects the core security posture of JumpServer installations, potentially allowing attackers to subvert the very security controls that the system is designed to enforce.
Organizations utilizing JumpServer must understand that this vulnerability creates a significant risk to their security infrastructure, particularly in environments where privileged access management is critical. The attack surface for this vulnerability includes any environment where JumpServer is deployed for managing access to critical systems, as the compromised system could then be used as a launching point for attacks against other network resources. The fix implemented in version v3.10.6 addresses the core IDOR issue by implementing proper access control validation for file transfer operations, ensuring that job IDs are properly authenticated and authorized before any file manipulation occurs. Security teams should prioritize patching this vulnerability as part of their regular maintenance schedules, particularly in environments where JumpServer serves as a central security control. The remediation process should include thorough testing to ensure that the patch does not introduce regressions in legitimate file transfer operations while maintaining the enhanced security controls that prevent unauthorized file uploads. Organizations should also consider implementing additional monitoring for unusual file transfer activities and job ID manipulations that could indicate exploitation attempts.
The vulnerability demonstrates the critical importance of proper access control validation in security-critical applications, particularly those handling privileged access and session management. The IDOR weakness in JumpServer's file manager represents a failure in the principle of least privilege, where users can potentially access resources beyond their intended scope through manipulation of direct object references. This issue aligns with ATT&CK technique T1078.004 for Valid Accounts and T1566.002 for Phishing, as unauthorized access through IDOR can lead to privilege escalation and further attack vectors. Organizations should implement comprehensive security testing including penetration testing and code reviews to identify similar IDOR vulnerabilities in other applications, as the pattern of insecure direct object references often appears in applications with complex access control mechanisms. The incident underscores the necessity of maintaining up-to-date security patches and the importance of vulnerability management programs that can quickly identify and remediate such critical flaws in security infrastructure tools.