EUVD-2024-1326

Comprehensive Technical Analysis of EUVD-2024-1326

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in the exec_utils class of the llama_index package, specifically within the safe_eval function, allows for prompt injection leading to arbitrary code execution. This vulnerability is a bypass of the previously addressed CVE-2023-39662, indicating that the initial fix was insufficient. The Base Score of 9.8 (CVSS:3.0) highlights the critical nature of this vulnerability, characterized by the following vector:

• 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 score underscores the potential for severe impact on confidentiality, integrity, and availability of the affected systems.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector involves exploiting insufficient input validation in the safe_eval function. An attacker can inject malicious code through crafted input, bypassing method restrictions and executing unauthorized code. This can be achieved through:

• Network-based Attacks: Exploiting the vulnerability over the network without requiring user interaction or elevated privileges.
• Prompt Injection: Crafting specific inputs that exploit the flaw in the safe_eval function to execute arbitrary code.
• File Creation: As demonstrated in the proof of concept, an attacker can create files on the system, potentially leading to further exploitation and persistence.

3. Affected Systems and Software Versions

The vulnerability affects the llama_index package, specifically versions prior to 0.10.24. The affected systems include:

• Product: run-llama/llama_index
• Versions: Unspecified versions less than 0.10.24

Users and organizations utilizing these versions are at risk and should prioritize updating to a patched version.

4. Recommended Mitigation Strategies

To mitigate the risk associated with this vulnerability, the following strategies are recommended:

• Update Software: Immediately update to the latest version of the llama_index package (0.10.24 or later) that includes the security patch.
• Input Validation: Implement robust input validation and sanitization mechanisms to prevent prompt injection.
• Code Review: Conduct thorough code reviews to identify and address similar vulnerabilities in other parts of the codebase.
• Monitoring and Logging: Enhance monitoring and logging to detect and respond to any suspicious activities or attempts to exploit this vulnerability.
• Access Controls: Implement strict access controls to limit the exposure of critical functions and reduce the attack surface.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly for organizations and individuals relying on the llama_index package. The potential for arbitrary code execution can lead to data breaches, system compromises, and loss of service, impacting critical infrastructure and sensitive data. The high EPSS score of 1 indicates a high likelihood of exploitation, emphasizing the urgency for mitigation.

6. Technical Details for Security Professionals

Vulnerability Details:

• Class: exec_utils
• Function: safe_eval
• Issue: Insufficient input validation leading to prompt injection and arbitrary code execution.

Proof of Concept:

• The vulnerability has been demonstrated through a proof of concept that creates a file on the system, showcasing the potential for further exploitation.

References:

• NVD: CVE-2024-3098
• GitHub Commits:
  • Commit 2c92e88838a5f481d50840240b1dd3180066c6f5
  • Commit 5fbcb5a8b9f20f81b791c7fc8849e352613ab475
• GitHub Repository: run-llama/llama_index
• Huntr Bounty: Bounty Details

Aliases:

• CVE: CVE-2024-3098
• GHSA: GHSA-wvpx-g427-q9wc

Assigner:

• Huntr AI: @huntr_ai

ENISA IDs:

• Product:
  • ID: 620d1c7e-64c5-34e6-8802-d2cb7081897f
  • Product Name: run-llama/llama_index
  • ID: 920b1a33-eb51-37f6-9f4f-71b51136699a
  • Product Name: run-llama/llama_index
  • Product Version: Unspecified <0.10.24
• Vendor:
  • ID: 214a66ae-7789-3d4b-bf56-d778bee8c9ff
  • Vendor Name: run-llama

This comprehensive analysis provides a detailed understanding of the vulnerability, its potential impact, and the necessary steps to mitigate the risk effectively.