Go crypto/tls: Information disclosure in Encrypted Client Hello

Summary

Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a disclosure of pre-shared key identities in the unencrypted client hello. A flaw was found in the `crypto/tls` package in Go. The vulnerability stems from the unintentional exposure of pre-shared key identities within the unencrypted client hello, potentially enabling an attacker to link previously anonymous connections. This primarily affects the privacy of communications rather than integrity or availability. Red Hat severity: Moderate — CVSS 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N). Weakness: CWE-201. Affected products named by the advisory: Assisted Installer for Red Hat OpenShift Container Platform 2; cert-manager Operator for Red Hat OpenShift; Compliance Operator; Confidential Compute Attestation; and 36 more.