Executive Summary

This vulnerability in Gridscale X Prepay (all versions before V4.2.1) allows an attacker to perform capture-replay attacks on authentication tokens. Specifically, an authenticated user who has been locked out can still establish valid user sessions by replaying previously captured authentication tokens.

Useful 0 Not Useful 0

Impact Analysis

The vulnerability can allow a locked-out user to bypass lockout restrictions and establish valid sessions, potentially leading to unauthorized access to the system or user data despite lockout policies.

Useful 0 Not Useful 0

Mitigation Strategies

To mitigate this vulnerability, you should update Gridscale X Prepay to version 4.2.1 or later as recommended by Siemens. Additionally, ensure multi-level redundant secondary protection schemes are in place, especially if managing critical power systems such as TSOs and DSOs. Protect network access using firewalls, network segmentation, VPNs, and configure your environment according to Siemens operational guidelines. Apply security updates using Siemens-provided tools and documented procedures, validate updates before deployment, and supervise the update process by trained personnel. [1]

Useful 0 Not Useful 0