CVE-2024-40629: Arbitrary File Write in Ansible Playbooks leads to RCE in Jumpserver

Vulnerability summary

CVE-2024-40629 is a critical (CVSS 10.0) vulnerability in fit2cloud jumpserver. EPSS estimates a 1.27% chance of exploitation in the next 30 days, higher than 69.8% of scored vulnerabilities.

Timeline

1. 18-07-2024
   PublishedVulnerability first disclosed.
2. 25-03-2025
   Last modifiedVulnerability information updated.

Description

JumpServer is an open-source Privileged Access Management (PAM) tool that provides DevOps and IT teams with on-demand and secure access to SSH, RDP, Kubernetes, Database and RemoteApp endpoints through a web browser. An attacker can exploit the Ansible playbook to write arbitrary files, leading to remote code execution (RCE) in the Celery container. The Celery container runs as root and has database access, allowing an attacker to steal all secrets for hosts, create a new JumpServer account with admin privileges, or manipulate the database in other ways. This issue has been patched in release versions 3.10.12 and 4.0.0. It is recommended to upgrade the safe versions. There are no known workarounds for this vulnerability.

• CWE-22Improper Limitation of a Pathname to a Restricted DirectoryThe product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.