CVE-2023-24108

9.8 CRITICAL

📋 TL;DR

MvcTools version 6d48cd6830fc1df1d8c9d61caa1805fd6a1b7737 contains a backdoor in its request package dependency that allows remote code execution. Attackers can exploit this to steal sensitive user data and execute arbitrary commands on affected systems. Any application using this specific vulnerable version of MvcTools is at risk.

💻 Affected Systems

Products:
  • MvcTools
Versions: 6d48cd6830fc1df1d8c9d61caa1805fd6a1b7737
Operating Systems: All
Default Config Vulnerable: ⚠️ Yes
Notes: The vulnerability is in the specific commit hash version. Any deployment using this exact version is vulnerable regardless of configuration.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system compromise leading to data exfiltration, ransomware deployment, lateral movement within networks, and persistent backdoor installation.

🟠

Likely Case

Unauthorized access to sensitive information, installation of cryptocurrency miners or botnet clients, and potential data breach.

🟢

If Mitigated

Limited impact due to network segmentation, minimal privileges, and proper monitoring catching exploitation attempts early.

🌐 Internet-Facing: HIGH
🏢 Internal Only: HIGH

🎯 Exploit Status

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

The backdoor is intentionally placed in the requirements.txt file, making exploitation trivial for attackers who discover vulnerable instances.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Any version other than 6d48cd6830fc1df1d8c9d61caa1805fd6a1b7737

Vendor Advisory: https://github.com/zetacomponents/MvcTools/issues/12

Restart Required: Yes

Instructions:

1. Remove the vulnerable version 6d48cd6830fc1df1d8c9d61caa1805fd6a1b7737. 2. Update to a clean version from the official repository. 3. Verify the request package dependency is from a legitimate source. 4. Restart all affected services.

🔧 Temporary Workarounds

Remove vulnerable version

all

Completely uninstall the backdoored version and replace with a known clean version

pip uninstall MvcTools
pip install MvcTools --no-cache-dir --force-reinstall

Block malicious package source

all

Prevent installation from the compromised package source

Add mirrors.neusoft.edu.cn to firewall block rules or package manager blacklist

🧯 If You Can't Patch

  • Isolate affected systems from network access immediately
  • Implement strict network monitoring and egress filtering to detect data exfiltration

🔍 How to Verify

Check if Vulnerable:

Check if MvcTools version 6d48cd6830fc1df1d8c9d61caa1805fd6a1b7737 is installed in your Python environment

Check Version:

pip show MvcTools | grep Version

Verify Fix Applied:

Confirm the installed version is NOT 6d48cd6830fc1df1d8c9d61caa1805fd6a1b7737 and verify package integrity

📡 Detection & Monitoring

Log Indicators:

  • Unexpected network connections from application processes
  • Suspicious process execution patterns
  • Unauthorized file system modifications

Network Indicators:

  • Outbound connections to unknown IPs from application servers
  • Unusual data exfiltration patterns
  • Command and control beaconing

SIEM Query:

source="application.logs" AND ("MvcTools" OR "6d48cd6830fc1df1d8c9d61caa1805fd6a1b7737") AND (process_execution OR network_connection)

🔗 References

📤 Share & Export