Description
A command injection vulnerability exists in the run-llama/llama_index repository, specifically within the safe_eval function. Attackers can bypass the intended security mechanism, which checks for the presence of underscores in code generated by LLM, to execute arbitrary code. This is achieved by crafting input that does not contain an underscore but still results in the execution of OS commands. The vulnerability allows for remote code execution (RCE) on the server hosting the application.
EPSS Score:
2%
Comprehensive Technical Analysis of EUVD-2024-1292
1. Vulnerability Assessment and Severity Evaluation
Vulnerability Description:
The vulnerability EUVD-2024-1292 pertains to a command injection flaw in the run-llama/llama_index repository, specifically within the safe_eval function. This function is intended to prevent the execution of malicious code by checking for the presence of underscores. However, attackers can bypass this security mechanism by crafting input that does not contain underscores but still results in the execution of OS commands, leading to remote code execution (RCE).
Severity Evaluation:
The vulnerability has a CVSS base score of 9.8, which is classified as critical. The CVSS vector CVSS:3.0/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 user interaction or special privileges.
2. Potential Attack Vectors and Exploitation Methods
Attack Vectors:
- Remote Code Execution (RCE): Attackers can exploit the vulnerability to execute arbitrary OS commands on the server hosting the application.
- Command Injection: By crafting input that bypasses the underscore check, attackers can inject malicious commands.
Exploitation Methods:
- Crafted Input: Attackers can create input strings that do not contain underscores but still result in the execution of OS commands.
- Automated Scripts: Attackers can use automated scripts to send malicious input to the
safe_evalfunction, leading to command execution.
3. Affected Systems and Software Versions
Affected Systems:
- Servers hosting applications that use the
run-llama/llama_indexrepository. - Any system that integrates the
safe_evalfunction from therun-llama/llama_indexrepository.
Software Versions:
run-llama/llama_indexversions prior to 10.26.
4. Recommended Mitigation Strategies
Immediate Mitigation:
- Patching: Upgrade to
run-llama/llama_indexversion 10.26 or later, which includes a fix for this vulnerability. - Input Sanitization: Implement additional input sanitization measures to prevent command injection.
- Access Controls: Restrict access to the
safe_evalfunction to trusted users and applications.
Long-Term Mitigation:
- Code Review: Conduct a thorough code review to identify and mitigate similar vulnerabilities.
- Security Training: Provide security training for developers to understand and avoid common vulnerabilities like command injection.
- Regular Updates: Ensure that all software dependencies are regularly updated to the latest versions.
5. Impact on European Cybersecurity Landscape
Impact Analysis:
- Widespread Exploitation: Given the critical nature of the vulnerability, widespread exploitation could lead to significant data breaches and system compromises across Europe.
- Critical Infrastructure: If the affected software is used in critical infrastructure, the impact could be severe, affecting essential services.
- Regulatory Compliance: Organizations may face regulatory penalties if they fail to address this vulnerability promptly, especially under GDPR and other cybersecurity regulations.
Mitigation Measures:
- Collaboration: European cybersecurity agencies should collaborate to share threat intelligence and mitigation strategies.
- Public Awareness: Increase public awareness about the vulnerability and the importance of timely patching.
- Incident Response: Prepare incident response plans to quickly address any exploitation attempts.
6. Technical Details for Security Professionals
Vulnerability Details:
- Function Affected:
safe_evalin therun-llama/llama_indexrepository. - Bypass Mechanism: The vulnerability allows attackers to bypass the underscore check by crafting input that still results in command execution.
Exploitation Example:
# Example of a crafted input that bypasses the underscore check
malicious_input = "os.system('rm -rf /')"
safe_eval(malicious_input)
Mitigation Code Example:
def safe_eval(code):
# Enhanced input sanitization
if any(keyword in code for keyword in ['os', 'system', 'exec', 'eval']):
raise ValueError("Potentially dangerous input detected")
# Additional security checks
# ...
eval(code)
References:
Aliases:
- CVE-2024-3271
- GHSA-r6gp-rff2-p3hf
Assigner:
- @huntr_ai
EPSS Score:
- 2 (indicating a low likelihood of exploitation in the wild, but still requiring immediate attention due to the critical nature of the vulnerability)
ENISA IDs:
- Product:
run-llama/llama_indexversions unspecified <10.26 - Vendor:
run-llama
By addressing this vulnerability promptly and comprehensively, organizations can significantly reduce the risk of exploitation and ensure the security of their systems.