Red Hat Security Advisory: OpenShift Container Platform 4.20.29 bug fix and security update

Important

A flaw was found in fast-uri. A remote attacker could exploit this vulnerability by crafting a malicious Uniform Resource Identifier (URI) that contains percent-encoded authority delimiters. The fast-uri library incorrectly decodes these delimiters during normalization and then re-emits them as raw separators, which can change the URI's intended authority. This issue allows applications that perform host allowlist checks, redirect validation, or outbound request routing to be steered to a different authority than specified, potentially bypassing security controls.

CWE-140 - Improper Neutralization of Delimiters

A flaw was found in webpack-dev-server. When a user configures a proxy with a broad context, such as '/', and enables WebSocket (ws: true) forwarding, the development server's own Hot Module Replacement (HMR) WebSocket can be intercepted. This interception leads to the leakage of the browser's cookies and Origin header to the proxy target, bypassing the server's Host/Origin validation. Additionally, it can corrupt the HMR socket, resulting in a denial of service for the HMR functionality.

CWE-346 - Origin Validation Error