Ubuntu alert USN-4881-1 (containerd)

From:
             
 
Marc Deslauriers <marc.deslauriers@canonical.com>
To:
             
 
"ubuntu-security-announce@lists.ubuntu.com" <ubuntu-security-announce@lists.ubuntu.com>
Subject:
             
 
[USN-4881-1] containerd vulnerability
Date:
             
 
Wed, 17 Mar 2021 10:54:45 -0400
Message-ID:
             
 
<db5ab723-9d4c-4592-6470-bd8b9e6a0099@canonical.com>
==========================================================================
Ubuntu Security Notice USN-4881-1
March 17, 2021

containerd vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.10
- Ubuntu 20.04 LTS

Summary:

The system could be made to expose sensitive information.

Software Description:
- containerd: daemon to control runC

Details:

It was discovered that containerd incorrectly handled certain environment
variables. Contrary to expectations, a container could receive environment
variables defined for a different container, possibly containing sensitive
information.

Update instructions:

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

Ubuntu 20.10:
  containerd                      1.3.7-0ubuntu3.3

Ubuntu 20.04 LTS:
  containerd                      1.3.3-0ubuntu2.3

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

References:
  https://ubuntu.com/security/notices/USN-4881-1
  CVE-2021-21334

Package Information:
  https://launchpad.net/ubuntu/+source/containerd/1.3.7-0ub...
  https://launchpad.net/ubuntu/+source/containerd/1.3.3-0ub...

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