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AWS res high security documentation change

Service: res · 2026-03-28 · Security-related high

File: res/archive/release-minus-4/ug/troubleshooting.md

Summary

Added multiple new troubleshooting entries including environment variables location, Windows admin login issues, certificate expiration, and several version-specific known issues including CVE-2024-6387 (RegreSSHion) security vulnerability.

Security assessment

Explicitly documents CVE-2024-6387 (RegreSSHion) security vulnerability affecting RHEL9 and Ubuntu VDIs, which is a critical SSH vulnerability (CVE-2024-6387). Also adds documentation about certificate expiration issues and other security-related troubleshooting items.

Diff

diff --git a/res/archive/release-minus-4/ug/troubleshooting.md b/res/archive/release-minus-4/ug/troubleshooting.md
index 86c925fb3..d213836cd 100644
--- a//res/archive/release-minus-4/ug/troubleshooting.md
+++ b//res/archive/release-minus-4/ug/troubleshooting.md
@@ -25,0 +26,2 @@ Detailed contents:
+      * [Where to find environment variables](./res-troubleshooting-general.html#res-troubleshooting-general-info-env-vars)
+
@@ -105,0 +108,4 @@ Detailed contents:
+      * [Login account for Windows Virtual Desktop is set to Administrator](./res-troubleshooting-issue-runbooks.html#res-troubleshooting-virtual-desktops-windows-admin)
+
+      * [Certificate expires when using external resource CertificateRenewalNode](./res-troubleshooting-issue-runbooks.html#res-troubleshooting-virtual-desktops-certificate-expires)
+
@@ -155,0 +162,12 @@ Detailed contents:
+      * [(2024.12 and 2024.12.01) Regex failure when registering a new Cognito user](./res-troubleshooting-known-issues.html#res-troubleshooting-known-issues-2024x-regex-failure-cognito)
+
+      * [(2024.12.01 and earlier) Invalid bad cert error when connecting to VDI using a custom domain](./res-troubleshooting-known-issues.html#res-troubleshooting-known-issues-2024x-invalid-bad-cert)
+
+      * [(2024.12 and 2024.12.01) Active Directory users cannot SSH to Bastion Host](./res-troubleshooting-known-issues.html#res-troubleshooting-known-issues-2024x-ad-users-cannot-ssh)
+
+      * [(2024.10) VDI auto stop broken for RES environments deployed in isolated VPCs](./res-troubleshooting-known-issues.html#res-troubleshooting-known-issues-2024x-vdi-auto-stop-broken)
+
+      * [(2024.10 and earlier) Failure to launch VDI for Graphic enhanced instance types](./res-troubleshooting-known-issues.html#res-troubleshooting-known-issues-2024x-fail-to-launch-vdi)
+
+      * [(2024.08) Preparing Infrastructure AMI Failure](./res-troubleshooting-known-issues.html#res-troubleshooting-known-issues-2024x-prep-infra-ami-fail)
+
@@ -159,0 +178,4 @@ Detailed contents:
+      * [(2024.06 and earlier) Group members not synced to RES during AD sync](./res-troubleshooting-known-issues.html#res-troubleshooting-known-issues-2024x-group-not-synced)
+
+      * [(2024.06 and earlier) CVE-2024-6387, RegreSSHion, Security Vulnerability in RHEL9 and Ubuntu VDIs](./res-troubleshooting-known-issues.html#res-troubleshooting-known-issues-2024x-regresshion)
+
@@ -172,4 +193,0 @@ Detailed contents:
-      * [(2024.06 and earlier) Group members not synced to RES during AD sync](./res-troubleshooting-known-issues.html#res-troubleshooting-known-issues-2024x-group-not-synced)
-
-      * [(2024.06 and earlier) CVE-2024-6387, RegreSSHion, Security Vulnerability in RHEL9 and Ubuntu VDIs](./res-troubleshooting-known-issues.html#res-troubleshooting-known-issues-2024x-regresshion)
-