EUVD-2024-3149

Comprehensive Technical Analysis of EUVD-2024-3149

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2024-3149 affects pyLoad, a free and open-source download manager. The issue arises from the ability to execute arbitrary code by placing executable files in the /.pyload/scripts directory and triggering their execution through specific actions, such as completing a download. This vulnerability allows remote code execution (RCE) and can lead to a complete system compromise.

Severity Evaluation:

• CVSS Base Score: 9.1 (Critical)
• CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): High (H)
  • User Interaction (UI): None (N)
  • Scope (S): Changed (C)
  • Confidentiality (C): High (H)
  • Integrity (I): High (H)
  • Availability (A): High (H)

The high base score indicates a critical vulnerability that can have severe impacts on confidentiality, integrity, and availability.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Remote Code Execution (RCE): An attacker can exploit this vulnerability by downloading an executable file to a folder within the /scripts path and triggering its execution.
2. Settings Manipulation: The attacker needs to change the download folder settings to point to a folder within the /scripts path.
3. API Exploitation: The /flashgot API can be used to download the malicious file, further facilitating the attack.

Exploitation Methods:

1. Initial Access: Gain access to the pyLoad server, either through compromised credentials or another vulnerability.
2. Settings Modification: Change the download folder settings to point to a folder within the /scripts path.
3. File Download: Use the /flashgot API to download an executable file to the specified folder.
4. Code Execution: Trigger the execution of the downloaded file by completing a download or another action that runs scripts in the /scripts folder.

3. Affected Systems and Software Versions

Affected Software:

• pyLoad versions: Prior to 0.5.0b3.dev87

Affected Systems:

• Any system running the vulnerable versions of pyLoad, including servers and personal computers.

4. Recommended Mitigation Strategies

1. Update Software: Upgrade to pyLoad version 0.5.0b3.dev87 or later, which includes the fix for this vulnerability.
2. Access Control: Implement strict access controls to limit who can change settings on the pyLoad server.
3. Monitoring: Enable logging and monitoring to detect any unauthorized changes to settings or suspicious file downloads.
4. Network Segmentation: Segment the network to isolate the pyLoad server from other critical systems.
5. Regular Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate potential risks.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations and individuals using pyLoad within the European Union. Given the critical nature of the vulnerability, it could be exploited to compromise sensitive data, disrupt services, and potentially lead to further attacks on connected systems. The European cybersecurity landscape must prioritize timely updates and robust security measures to mitigate such risks.

6. Technical Details for Security Professionals

Vulnerability Details:

• Vulnerable Component: /.pyload/scripts directory
• Exploitation Path:
  1. Change the download folder settings to a folder within the /scripts path.
  2. Use the /flashgot API to download an executable file to the specified folder.
  3. Trigger the execution of the downloaded file by completing a download or another action that runs scripts in the /scripts folder.

References:

• GitHub Security Advisory
• NVD Detail
• GitHub Commit
• pyLoad GitHub Repository

Aliases:

• CVE-2024-47821
• GHSA-w7hq-f2pj-c53g

Assigner:

• GitHub_M

ENISA IDs:

• Product: pyload (versions < 0.5.0b3.dev87)
• Vendor: pyload

EPSS: Not Available

By addressing this vulnerability promptly and implementing the recommended mitigation strategies, organizations can significantly reduce the risk of exploitation and protect their systems from potential attacks.