USN-4653-1: containerd vulnerability

Publication date

30 November 2020

Overview

containerd could be made to crash or run programs as an administrator.


Packages

Details

It was discovered that access controls for the shim’s API socket did not
restrict access to the abstract unix domain socket in some cases. An attacker
could use this vulnerability to run containers with elevated privileges.

It was discovered that access controls for the shim’s API socket did not
restrict access to the abstract unix domain socket in some cases. An attacker
could use this vulnerability to run containers with elevated privileges.

Update instructions

After a standard system update you need to restart containerd to make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
20.10 groovy containerd –  1.3.7-0ubuntu3.1
20.04 focal containerd –  1.3.3-0ubuntu2.1
18.04 bionic containerd –  1.3.3-0ubuntu1~18.04.3
16.04 xenial containerd –  1.2.6-0ubuntu1~16.04.5

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