[GUACAMOLE-681] Color palette OSC sequence crashing SSH

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Invalid
• Affects Version/s: 0.9.14
• Component/s: SSH
• Environment: Newest docker versions of guacd and guacamole, running on Unraid. Client is connecting from Chromium on Arch Linux.
• Assignee: Unassigned
• Reporter: Patrick Collins
• Created: 16/Dec/18 01:43
• Updated: 24/Dec/18 21:35
• Resolved: 24/Dec/18 21:35

Description

Based on this issue, it seems Guacamole is supposed to work with Linux console codes.

I'm getting reliable crashes when printing certain console codes in a Guacamole SSH session; notably ones printed by .bashrc in some configurations.

When printed directly on the device, (whether on a tty or a terminal emulator,) the codes work.

When printed in Guacamole, they immediately crash the session; prompting reconnection.

This command is enough to crash the session:

echo 1b5d343b0a | xxd -r -p

(It converts some hex to 'ESC []4;' and prints it.)

 

Apologies if the priority of this issue is inappropriate; I based it off the "crashes" criterion; but I'm not certain to what extent the program has to crash to qualify.

Issue Links

• Is contained by: GUACAMOLE-470 Make individual terminal colors configurable through "color-scheme" parameter