[Pkg-virtualbox-devel] Bug#871645: virtualbox: NatNetwork doesn't allow connections beyond the host due to VBoxNetNAT missing the suid bit

Daniel Reichelt debian at nachtgeist.net
Thu Aug 10 11:12:55 UTC 2017

Package: virtualbox
Version: 5.1.26-dfsg-2
Severity: normal

Dear Maintainer,

when creating VMs, each with a NatNetwork NIC, the VMs can happily talk
to each other but network access beyond the virtualbox host is not
possible. Conventional NAT mode is not affected and works perfeclty


# chmod u+s /usr/lib/virtualbox/VBoxNetNAT

…and kill off possibly lingering VBoxNetNAT processes and restart the
VMs --> network access beyond the vbox host should work now.

I just confirmed that the generic linux installer package from
virtualbox.org installs the VBoxNetNAT binary as suid.


-- System Information:
Debian Release: 9.1
  APT prefers proposed-updates
  APT policy: (990, 'proposed-updates'), (990, 'stable'), (500, 'oldstable-updates'), (500, 'oldstable-proposed-updates'), (500, 'testing'), (500, 'oldstable'), (98, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.11.0-0.bpo.1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: sysvinit (via /sbin/init)

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