This bug was fixed in the package apport - 2.20-0ubuntu2
---------------
apport (2.20-0ubuntu2) xenial; urgency=medium
* Fix signal_crashes.test_modify_after_start test when running as
root.
apport (2.20-0ubuntu1) xenial; urgency=medium
* New upstream release.
- Reimplement forwarding crashes into a container, via activating the new
apport-forward.socket in the container and handing over the core dump
fd. This is a much safer way than the original implementation with
nsexec. Thanks Stéphane Graber! (LP: #1445064)
* Drop long-obsolete sysv-rc dependency.
* Add python3-systemd recommendation to apport, to make crash report
generation work in containers.
* Install new systemd units into apport package.
-- Martin Pitt <martin.p...@ubuntu.com> Mon, 15 Feb 2016 11:49:56
+0100
** Changed in: apport (Ubuntu)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1445064
Title:
Re-implement container crash forwarding
Status in apport package in Ubuntu:
Fix Released
Bug description:
The container crash forwarding feature must be re-implemented to use a
safe design.
The current thought is:
- Introduce a systemd unit and upstart job to have a socket activated apport
crash handler
- When a crash comes from a container, have apport connect to the socket in
the crashed process' root, write the arguments it received to the socket.
- The crash handler in the container will then run and close the socket when
it doesn't need the crashed process anymore.
- The host crash handler then exits.
This means that we only rely on an accessible root directory for the
crashed process and the crash handler will be spawned by init inside
that container. This makes it safe for privileged and unprivileged
containers.
As an extra security measure, rate limiting should be added so that we
can only have 10 in-flight crashes and that any crash taking more than
30s to be handled get cancelled (preventing host DoS).
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