EUVD-2024-47502

Comprehensive Technical Analysis of EUVD-2024-47502

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in the _backup_run function of aimhubio/aim version 3.19.3 is severe. The improper handling of the run_hash and repo.path parameters allows remote attackers to manipulate file paths, leading to arbitrary file overwrites and data exfiltration. This vulnerability has a CVSS Base Score of 9.8, indicating a critical severity level. The CVSS vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H highlights the following:

• Attack Vector (AV:N): Network-based attack.
• Attack Complexity (AC:L): Low complexity required.
• Privileges Required (PR:N): No privileges required.
• User Interaction (UI:N): No user interaction required.
• Scope (S:U): Unchanged.
• Confidentiality (C:H): High impact.
• Integrity (I:H): High impact.
• Availability (A:H): High impact.

The EPSS score of 75 indicates a high likelihood of exploitation in the wild.

2. Potential Attack Vectors and Exploitation Methods

Potential attack vectors include:

• Remote File Overwrite: Attackers can manipulate the run_hash and repo.path parameters to overwrite critical system files, leading to denial of service (DoS).
• Data Exfiltration: By manipulating file paths, attackers can exfiltrate sensitive data from the host server.
• Remote Code Execution (RCE): If attackers can overwrite executable files or scripts, they may achieve RCE, allowing them to execute arbitrary code on the server.

Exploitation methods may involve:

• Crafted HTTP Requests: Sending specially crafted HTTP requests to the vulnerable endpoint to manipulate the parameters.
• Automated Scripts: Using automated scripts to exploit the vulnerability en masse across multiple targets.

3. Affected Systems and Software Versions

The vulnerability affects aimhubio/aim version 3.19.3. It is likely that earlier versions may also be affected, but this has not been explicitly confirmed. Organizations using aimhubio/aim should consider all versions up to and including 3.19.3 as potentially vulnerable until further notice.

4. Recommended Mitigation Strategies

To mitigate this vulnerability, the following strategies are recommended:

• Patch Management: Immediately apply any available patches or updates from aimhubio.
• Access Controls: Implement strict access controls to limit exposure of the vulnerable function.
• Network Segmentation: Segment the network to isolate critical systems and reduce the attack surface.
• Monitoring and Logging: Enhance monitoring and logging to detect and respond to suspicious activities.
• Input Validation: Ensure robust input validation and sanitization for all parameters, especially run_hash and repo.path.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to European organizations using aimhubio/aim, particularly those in sectors handling sensitive data such as finance, healthcare, and government. The potential for data exfiltration and RCE could lead to severe breaches, financial losses, and reputational damage. European cybersecurity authorities should issue advisories and guidelines to help organizations mitigate this risk effectively.

6. Technical Details for Security Professionals

Vulnerability Details:

• Function: _backup_run
• Parameters: run_hash, repo.path
• Impact: Arbitrary file overwrite, data exfiltration, potential RCE.

Exploitation Steps:

1. Identify the vulnerable endpoint.
2. Craft an HTTP request with manipulated run_hash and repo.path parameters.
3. Send the request to overwrite a critical file or exfiltrate data.

Detection Methods:

• Log Analysis: Look for unusual file access patterns or unexpected file modifications.
• Intrusion Detection Systems (IDS): Deploy IDS to detect and alert on suspicious network traffic.
• File Integrity Monitoring: Use file integrity monitoring tools to detect unauthorized file changes.

Mitigation Steps:

1. Apply patches and updates from aimhubio.
2. Implement strict input validation and sanitization.
3. Enhance access controls and network segmentation.
4. Increase monitoring and logging for early detection.

References:

• Huntr Bounty: Huntr Bounty Link
• CVE ID: CVE-2024-6396

By following these recommendations, organizations can significantly reduce the risk associated with this vulnerability and enhance their overall cybersecurity posture.