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Researchers Use Claude to Port Pre-Auth RCE Exploit From One PLC Model to Another

The Hacker News
Actively Exploited
CVEExploitVulnerabilityRCE

Overview

Forescout Research - Vedere Labs has successfully adapted a pre-authentication remote code execution (RCE) exploit from one model of WAGO programmable logic controller (PLC) to another, using Anthropic's Claude AI to assist in the process. This exploit targets CVE-2021-31886, which involves a stack-based buffer overflow in the Nucleus FTP server when processing the USER command. The researchers were able to execute attacker-supplied ARM shellcode on actual hardware, demonstrating the potential risks associated with this vulnerability. Companies using affected WAGO PLCs need to be aware of this exploit as it poses a significant risk of unauthorized access and control of their systems. This incident serves as a reminder of the vulnerabilities that can exist in industrial control systems and the need for robust security measures.

Key Takeaways

  • Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
  • Affected Systems: WAGO programmable logic controllers (PLCs), Nucleus FTP server affected by CVE-2021-31886.
  • Action Required: Organizations should apply any available patches for CVE-2021-31886 from WAGO, if not already done.
  • Timeline: Disclosed on 2021-09-14

Original Article Summary

Forescout Research - Vedere Labs said it used Anthropic's Claude to port a working pre-authentication remote code execution (RCE) exploit from one WAGO programmable logic controller (PLC) to another, executing attacker-supplied ARM shellcode on live hardware. The exploit targets CVE-2021-31886, a stack-based buffer overflow in the Nucleus FTP server's handling of the USER command

Impact

WAGO programmable logic controllers (PLCs), Nucleus FTP server affected by CVE-2021-31886.

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Disclosed on 2021-09-14

Remediation

Organizations should apply any available patches for CVE-2021-31886 from WAGO, if not already done. Regularly update and secure PLC firmware and ensure proper network segmentation to limit access to these devices. Implement monitoring for unusual activity that could indicate exploitation attempts.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Exploit, Vulnerability, and 1 more.

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