CVE-2024-29202 in JumpServer
Summary
by MITRE • 03/29/2024
JumpServer is an open source bastion host and an operation and maintenance security audit system. Attackers can exploit a Jinja2 template injection vulnerability in JumpServer's Ansible to execute arbitrary code within the Celery container. Since the Celery container runs with root privileges and has database access, attackers could steal sensitive information from all hosts or manipulate the database. This vulnerability is fixed in v3.10.7.
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Analysis
by VulDB Data Team • 01/10/2025
The CVE-2024-29202 vulnerability represents a critical template injection flaw within JumpServer's Ansible integration that exposes organizations to remote code execution risks. JumpServer serves as a bastion host and operations security audit system that facilitates secure access to enterprise infrastructure while maintaining comprehensive audit trails. The vulnerability specifically resides in the Jinja2 template processing mechanism used by the Ansible component, creating a pathway for attackers to inject malicious templates that execute arbitrary code within the Celery container environment.
This vulnerability stems from insufficient input validation and sanitization within the template rendering process, allowing attackers to manipulate template variables and execute unintended commands. The flaw manifests when JumpServer processes user-supplied data through Jinja2 templating without proper escaping or validation, creating a direct code injection vector. The technical implementation involves the improper handling of template parameters that flow from user inputs directly into the template engine, bypassing security controls designed to prevent malicious code execution. According to CWE-74, this maps directly to improper neutralization of special elements used in template engines, a well-documented weakness in web application security.
The operational impact of this vulnerability extends far beyond simple code execution, as the affected Celery container operates with root privileges within the JumpServer environment. This privileged execution context provides attackers with elevated access levels that enable comprehensive system compromise. The vulnerability allows unauthorized actors to access the database directly, potentially extracting sensitive information from all managed hosts, including credentials, system configurations, and audit logs. The attack surface includes not only the immediate JumpServer infrastructure but also all systems that rely on JumpServer for access control and security monitoring, creating a cascading security risk across enterprise networks.
Database manipulation capabilities represent another significant concern, as attackers can modify or delete critical operational data within the JumpServer system. This includes audit records that would normally provide evidence of security incidents and operational activities, potentially enabling attackers to cover their tracks while simultaneously compromising the integrity of security monitoring systems. The vulnerability's exploitation requires minimal privileges and can be achieved through standard web application attack vectors, making it particularly dangerous in environments where JumpServer serves as a central security control point. Organizations using JumpServer in production environments face potential data breaches, compliance violations, and operational disruptions.
The remediation for CVE-2024-29202 requires immediate deployment of JumpServer version 3.10.7, which includes patches addressing the template injection vulnerability. Security administrators should conduct thorough vulnerability assessments to ensure all JumpServer instances have been updated and verify that the patch has been properly applied. Additional mitigations include implementing network segmentation to limit access to the JumpServer infrastructure, enabling strict input validation for all user-supplied data, and monitoring for unusual template processing activities. Organizations should also review their access controls and privilege management policies to reduce the potential impact of similar vulnerabilities. The ATT&CK framework categorizes this vulnerability under T1059.001 (Command and Scripting Interpreter: PowerShell) and T1566 (Phishing) as attackers may use this vulnerability to establish persistent access and escalate privileges within target environments.