CVE-2024-8769: Aimstack Aim Path Traversal Vulnerability

CVE-2024-8769 Overview

A path traversal vulnerability exists in aimhubio/aim that allows attackers to delete arbitrary files on systems running the Aim tracking server. The vulnerability resides in the LockManager.release_locks function where the run_hash parameter, which is user-controllable, is concatenated without proper path normalization. This allows malicious actors to craft requests containing relative path sequences (e.g., ../) to target files outside the intended directory structure, ultimately enabling arbitrary file deletion through the tracking server instruction API.

Critical Impact

Attackers can exploit this vulnerability to delete any file accessible to the tracking server process, potentially causing data loss, system instability, or denial of service conditions.

Affected Products

• Aimstack Aim (commit bb76afe and potentially other versions)

Discovery Timeline

• 2025-03-20 - CVE CVE-2024-8769 published to NVD
• 2025-10-15 - Last updated in NVD database

Technical Details for CVE-2024-8769

Vulnerability Analysis

This vulnerability is classified as CWE-22 (Path Traversal) and allows attackers to bypass intended access restrictions on file system resources. The root issue lies in the improper handling of user input in the LockManager.release_locks function. When a user provides a malicious run_hash value containing directory traversal sequences, the application fails to sanitize or normalize the path before using it in file deletion operations.

The attack chain begins when an attacker interacts with the tracking server instruction API, which exposes the vulnerable Repo._close_run() method. This method internally calls the LockManager.release_locks function with the attacker-controlled run_hash parameter. Without proper validation, the concatenated path can reference any location on the file system, allowing the attacker to delete critical system files, configuration data, or application databases.

Root Cause

The vulnerability stems from insufficient input validation and lack of path normalization in the LockManager.release_locks function. The run_hash parameter is directly concatenated into a file path without sanitization, allowing relative path sequences like ../ to escape the intended directory structure. Proper path canonicalization and validation against allowed directories would prevent this type of attack.

Attack Vector

The attack is network-accessible and requires no authentication or user interaction. An attacker can remotely send crafted requests to the Aim tracking server's instruction API, providing a malicious run_hash value containing path traversal sequences. The server then processes this input and attempts to delete files at the attacker-specified location.

The exploitation process involves sending a specially crafted request to the tracking server where the run_hash parameter contains relative path traversal sequences such as ../../../../etc/important_config. When the Repo._close_run() method is invoked, it passes this malicious value to LockManager.release_locks, which constructs a file path and attempts deletion without verifying the target location falls within allowed boundaries. For detailed technical information, see the Huntr Bounty Report.

Detection Methods for CVE-2024-8769

Indicators of Compromise

• Unexpected file deletions or missing critical files on systems running Aim tracking server
• Log entries showing requests to the tracking server API with suspicious run_hash values containing ../ sequences
• Anomalous activity patterns targeting the Repo._close_run() endpoint

Detection Strategies

• Monitor tracking server logs for requests containing path traversal patterns such as ../, ..\, or URL-encoded variants (%2e%2e%2f)
• Implement file integrity monitoring on critical system and application files
• Deploy web application firewall rules to detect and block path traversal attempts in API parameters

Monitoring Recommendations

• Enable verbose logging on the Aim tracking server to capture all API requests with full parameter details
• Set up alerts for file system changes outside of normal application directories
• Monitor network traffic for unusual patterns of requests to the tracking server instruction API

How to Mitigate CVE-2024-8769

Immediate Actions Required

• Restrict network access to the Aim tracking server to trusted networks or hosts only
• Review and audit existing file system permissions to minimize the impact of potential arbitrary file deletions
• Consider running the tracking server with minimal file system privileges using a dedicated service account
• Implement input validation at the network perimeter to block requests containing path traversal sequences

Patch Information

No official vendor patch information is currently available. Users should monitor the aimhubio/aim repository for security updates and review the Huntr Bounty Report for the latest remediation guidance.

Workarounds

• Deploy the Aim tracking server behind a reverse proxy with request filtering to sanitize potentially malicious input
• Implement network segmentation to isolate the tracking server from critical systems
• Use containerization or sandboxing to limit file system access available to the tracking server process
• Apply operating system-level access controls to protect sensitive files and directories from deletion

# Example: Restrict network access to tracking server using iptables
# Allow only trusted IP range to access the tracking server port
iptables -A INPUT -p tcp --dport 53800 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 53800 -j DROP