CVE-2023-7343

Hirschmann · HiSecOS Web Server

Hirschmann HiSecOS web server version 05 is vulnerable to a high-severity security flaw that could compromise the integrity of the management interface.

Executive summary

A high-severity vulnerability in Hirschmann HiSecOS web server version 05 could allow attackers to gain unauthorized control over industrial networking equipment.

Vulnerability

This vulnerability exists in the HiSecOS web server version 05. With a CVSS score of 7.8, the flaw likely involves improper authentication or session management, potentially allowing an attacker to escalate privileges or perform unauthorized configuration changes.

Business impact

A successful exploit could allow an attacker to alter network traffic flow or disable security features within an industrial network. The CVSS score of 7.8 places this in the High severity range, emphasizing the risk of unauthorized access to critical infrastructure management systems and the potential for subsequent operational disruption.

Remediation

Immediate Action: Update Hirschmann HiSecOS to the latest version to mitigate this vulnerability.

Proactive Monitoring: Implement logging for all administrative actions within the HiSecOS interface and set up alerts for any failed login attempts or unauthorized configuration changes.

Compensating Controls: Use a Web Application Firewall (WAF) to filter incoming traffic to the management interface and restrict access to specific, authorized IP addresses.

Exploitation status

Public Exploit Available: false

Analyst recommendation

Organizations using Hirschmann HiSecOS version 05 should apply the necessary patches immediately. While the CVSS score is slightly lower than other recent vulnerabilities, a score of 7.8 still represents a significant risk to industrial operations. Ensuring the management interface is secure is paramount to maintaining overall network stability.