Debian 9: DLA-2755-1 Critical: Btrbk Arbitrary Code Execution Fix

An issue has been found in btrbk, a backup tool for btrfs subvolumes.
Due to mishandling of remote hosts filtering SSH commands using
ssh_filter_btrbk.sh in authorized_keys an arbitrary code execution would
have been allowed.


For Debian 9 stretch, this problem has been fixed in version
0.24.0-1+deb9u1.

We recommend that you upgrade your btrbk packages.

For the detailed security status of btrbk please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/btrbk

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS