EUVD-2025-29708

Comprehensive Technical Analysis of EUVD-2025-29708

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-29708 pertains to an Improper Handling of Exceptional Conditions in the ZIP archive scanning component of mmaitre314 picklescan. This flaw allows a remote attacker to bypass security scans by crafting a ZIP archive with a file containing a bad Cyclic Redundancy Check (CRC). The scanner fails to analyze the contents for malicious pickle files, leading to potential execution of malicious code when the file is loaded.

Severity Evaluation:

• Base Score: 9.3 (Critical)
• Base Score Version: 4.0
• Base Score Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

The high base score indicates a critical vulnerability due to the potential for high confidentiality, integrity, and availability impacts without requiring user interaction or privileges.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Exploitation: An attacker can craft a malicious ZIP archive with a bad CRC and distribute it through various means such as email attachments, download links, or compromised websites.
• Supply Chain Attacks: An attacker could inject the malicious ZIP archive into legitimate software distribution channels, affecting users who rely on picklescan for security scanning.

Exploitation Methods:

• Crafting Malicious ZIP Archives: The attacker creates a ZIP archive with a file that has a bad CRC, ensuring the scanner fails to analyze the contents.
• Embedding Malicious Code: The attacker embeds malicious pickle files within the ZIP archive, which can execute arbitrary code when loaded.

3. Affected Systems and Software Versions

Affected Software:

• Product: picklescan
• Vendor: mmaitre314
• Versions: 0 ≤ 0.0.30

Affected Systems:

• Any system or environment that utilizes picklescan for security scanning, particularly those handling ZIP archives.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Patching: Upgrade to a patched version of picklescan that addresses the vulnerability.
• Temporary Workarounds: Implement additional checks to validate the integrity of ZIP archives before scanning.

Long-Term Mitigation:

• Enhanced Scanning: Integrate more robust scanning mechanisms that can handle exceptional conditions gracefully.
• User Education: Educate users about the risks associated with handling ZIP archives from untrusted sources.
• Regular Updates: Ensure regular updates and patches are applied to all security tools and software.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly for organizations relying on picklescan for security scanning. The potential for remote code execution can lead to data breaches, unauthorized access, and disruption of services. This underscores the importance of robust vulnerability management and timely patching practices.

6. Technical Details for Security Professionals

Vulnerability Details:

• Component: ZIP archive scanning component of picklescan
• Issue: Improper handling of exceptional conditions, specifically bad CRC in ZIP archives
• Impact: Bypass of security scans, leading to potential execution of malicious code

Code Reference:

• Source File: relaxed_zipfile.py
• Line Number: 35
• GitHub Advisory: GHSA-mjqp-26hc-grxg

References:

• Hugging Face Model
• Hugging Face Tree
• GitHub Source Code
• NVD Detail

Aliases:

• CVE: CVE-2025-10156

Assigner:

• JFROG

ENISA IDs:

• Product: d9f06a5b-41b4-377c-b73b-6325faaa7a44
• Vendor: c70f023c-92c8-32a6-891d-70bc9ec27b24

By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risks associated with this critical flaw and enhance their overall cybersecurity posture.