EUVD-2024-38933

Comprehensive Technical Analysis of EUVD-2024-38933

1. Vulnerability Assessment and Severity Evaluation

Vulnerability Description: The vulnerability in streamlit-geospatial, a Streamlit multipage app for geospatial applications, arises from the improper handling of user input. Specifically, the palette variable on line 430 in pages/1_📷_Timelapse.py is directly used in the eval() function on line 435, leading to remote code execution (RCE). This issue was addressed in commit c4f81d9616d40c60584e36abb15300853a66e489.

Severity Evaluation: The vulnerability has a CVSS Base Score of 9.8, which is considered critical. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H indicates the following:

• Attack Vector (AV): Network (N)
• Attack Complexity (AC): Low (L)
• Privileges Required (PR): None (N)
• User Interaction (UI): None (N)
• Scope (S): Unchanged (U)
• Confidentiality (C): High (H)
• Integrity (I): High (H)
• Availability (A): High (H)

This high severity score underscores the critical nature of the vulnerability, which can be exploited remotely with low complexity and without requiring any special privileges or user interaction.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Code Execution (RCE): An attacker can inject malicious code through the palette variable, which is then executed by the eval() function.
• Network-Based Attacks: Given the network attack vector, an attacker can exploit this vulnerability over the internet.

Exploitation Methods:

• Code Injection: An attacker can craft a payload that includes malicious code and submit it as input to the palette variable.
• Automated Scripts: Attackers can use automated scripts to exploit this vulnerability en masse, targeting multiple instances of the application.

3. Affected Systems and Software Versions

Affected Systems:

• Any system running the streamlit-geospatial application prior to the fix in commit c4f81d9616d40c60584e36abb15300853a66e489.

Software Versions:

• All versions of streamlit-geospatial before the commit c4f81d9616d40c60584e36abb15300853a66e489.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update Software: Ensure that all instances of streamlit-geospatial are updated to include the fix from commit c4f81d9616d40c60584e36abb15300853a66e489.
• Input Validation: Implement robust input validation to sanitize user inputs and prevent code injection.
• Disable eval(): Avoid using the eval() function for executing user-provided input. Use safer alternatives like predefined functions or libraries.

Long-Term Strategies:

• Code Review: Conduct thorough code reviews to identify and mitigate similar vulnerabilities.
• Security Training: Provide security training for developers to avoid common pitfalls like using eval() with user input.
• Regular Updates: Ensure regular updates and patches are applied to all software components.

5. Impact on European Cybersecurity Landscape

Potential Impact:

• Data Breaches: The vulnerability can lead to significant data breaches, compromising confidentiality, integrity, and availability of data.
• Operational Disruption: Exploitation can result in operational disruptions, affecting critical infrastructure and services.
• Reputation Damage: Organizations using the affected software may suffer reputational damage due to security breaches.

Regulatory Compliance:

• GDPR: Organizations must ensure compliance with GDPR by protecting personal data and reporting breaches promptly.
• NIS Directive: Critical infrastructure providers must adhere to the Network and Information Systems (NIS) Directive to maintain security and resilience.

6. Technical Details for Security Professionals

Code Analysis:

• Vulnerable Code:

  palette = user_input  # Line 430
  eval(palette)  # Line 435
  

• Fixed Code:

  palette = sanitize_input(user_input)  # Line 430
  safe_function(palette)  # Line 435
  

Sanitization Example:

def sanitize_input(input_str):
    # Example sanitization function
    allowed_chars = set('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_')
    return ''.join(c for c in input_str if c in allowed_chars)

References:

• GitHub Security Advisory
• Commit Fix
• Vulnerable Code Lines
• Vulnerable Code Lines

Conclusion: This vulnerability highlights the importance of secure coding practices and regular updates. Organizations must prioritize patching and implementing robust security measures to protect against such critical vulnerabilities.