From 3c91a2cc1a86a02dea21f83ae736496028bc817b Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Tue, 22 Feb 2022 15:40:01 +0100
Subject: [remote-access] Validate vnc_port is in range

---
 core/modules/remote-access/data/etc/X11/Xsetup.d/50-launch-vncserver | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'core/modules/remote-access')

diff --git a/core/modules/remote-access/data/etc/X11/Xsetup.d/50-launch-vncserver b/core/modules/remote-access/data/etc/X11/Xsetup.d/50-launch-vncserver
index e6e7f568..4449a0fa 100755
--- a/core/modules/remote-access/data/etc/X11/Xsetup.d/50-launch-vncserver
+++ b/core/modules/remote-access/data/etc/X11/Xsetup.d/50-launch-vncserver
@@ -6,6 +6,9 @@
 	# TODO If we support multiple parallel sessions in the future, we need dedicated
 	# ports for each session for both, the VNC and the RPC port.
 	vnc_port="${SLX_REMOTE_VNC_PORT:-5900}"
+	if ! [ "$vnc_port" -gt 0 ] || ! [ "$vnc_port" -lt 65535 ]; then
+		vnc_port=5900
+	fi
 	srchost="$SLX_REMOTE_HOST_ACCESS"
 	if [ -n "$srchost" ]; then
 		# IPTABLES
-- 
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