Cannot exit (Ctrl+C) from sshuttle

[Martin]

After connecting, I can't exit with Ctrl+C (it just prints ^C to the terminal). I've tried Tilix, gnome-terminal and xterm. Workaround is Ctrl+Z and then `kill %1`.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: sshuttle 1.0.5-1ubuntu4
ProcVersionSignature: Ubuntu 5.15.0-40.43-generic 5.15.35
Uname: Linux 5.15.0-40-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: GNOME
Date: Wed Jul 6 22:30:15 2022
InstallationDate: Installed on 2022-07-03 (2 days ago)
InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
PackageArchitecture: all
SourcePackage: sshuttle
UpgradeStatus: No upgrade log present (probably fresh install)

[Paul Goins (vultaire)]

I've also hit this. This worked fine in Bionic and Focal, but since upgrading to Jammy, I hit this consistently.

[Martin (uzivatelmp)]

I've tried to unapply "gracefully-exit-ctrl-c-use-pty.patch" (which has a suspicious name), but that didn't help. Ctrl+C still just prints ^C to the terminal.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Marcus Boden (marcusboden)]

I tried the latest version by installing it via pip. That works. Therefore I thought it was fixed by this: https://github.com/sshuttle/sshuttle/pull/712. But this patch has been backported, so apparently there is something else that stops the SIGINT signal from going through.

Since this is caused by `use_pty` in the sudoers config, one workaround is to disable it. This can be done for just sshuttle by adding
Defaults!SSHUTTLEF17 !use_pty
to `/etc/sudoers.d/sshuttle`. You will have to replace `SSHUTTLEF17` with the right alias. Use at your own risk, as the use_pty is a security feature...