CVE-2024-0818

9.1 CRITICAL

📋 TL;DR

This vulnerability allows attackers to overwrite arbitrary files on systems running vulnerable versions of PaddlePaddle through path traversal. Attackers can exploit improper path validation to write malicious content to sensitive locations. This affects all users of PaddlePaddle before version 2.6.

💻 Affected Systems

Products:
  • PaddlePaddle
Versions: All versions before 2.6
Operating Systems: All platforms running PaddlePaddle
Default Config Vulnerable: ⚠️ Yes
Notes: Any application using PaddlePaddle's vulnerable file handling functions is affected regardless of configuration.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system compromise through overwriting critical system files, installation of persistent backdoors, or destruction of system integrity.

🟠

Likely Case

Data corruption, denial of service through overwriting application files, or privilege escalation by modifying configuration files.

🟢

If Mitigated

Limited impact with proper file permission restrictions and network segmentation preventing external access.

🌐 Internet-Facing: HIGH - Web applications using vulnerable PaddlePaddle could allow remote attackers to compromise the server.
🏢 Internal Only: MEDIUM - Internal attackers or compromised internal systems could exploit this for lateral movement or persistence.

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

The vulnerability is straightforward to exploit with publicly available details on huntr.com. No authentication required if the vulnerable endpoint is exposed.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 2.6.0 and later

Vendor Advisory: https://github.com/PaddlePaddle/Paddle/security/advisories

Restart Required: Yes

Instructions:

1. Update PaddlePaddle to version 2.6.0 or later using pip: pip install --upgrade paddlepaddle==2.6.0 2. Restart all services and applications using PaddlePaddle. 3. Verify the update was successful.

🔧 Temporary Workarounds

Input Validation and Sanitization

all

Implement strict input validation to reject any file paths containing directory traversal sequences like '../' or absolute paths.

File Permission Restrictions

linux

Run PaddlePaddle with minimal file system permissions, using chroot or containerization to limit writable directories.

chmod 755 /path/to/paddle/directories
chown non-root-user:non-root-group /path/to/paddle

🧯 If You Can't Patch

  • Implement strict network access controls to limit which systems can access PaddlePaddle services
  • Deploy application-level firewalls or WAFs with rules to block path traversal patterns

🔍 How to Verify

Check if Vulnerable:

Check PaddlePaddle version: python -c "import paddle; print(paddle.__version__)" - if version is less than 2.6.0, system is vulnerable.

Check Version:

python -c "import paddle; print(paddle.__version__)"

Verify Fix Applied:

After updating, verify version is 2.6.0 or higher using same command and test file operations with traversal attempts.

📡 Detection & Monitoring

Log Indicators:

  • Unusual file write operations outside expected directories
  • Multiple failed file access attempts with '../' patterns
  • File modification timestamps on system files

Network Indicators:

  • HTTP requests containing '../' sequences to PaddlePaddle endpoints
  • Unusual outbound connections after file write operations

SIEM Query:

source="*paddle*" AND ("../" OR "..\\" OR "/etc/" OR "/root/")

🔗 References

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