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Ubuntu Security Notice USN-5311-2

Ubuntu Security Notice USN-5311-2
Posted May 17, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5311-2 - USN-5311-1 released updates for contained. Unfortunately, a subsequent update reverted the fix for thisCVE by mistake. This update corrects the problem. It was discovered that containerd allows attackers to gain access to read- only copies of arbitrary files and directories on the host via a specially- crafted image configuration. An attacker could possibly use this issue to obtain sensitive information.

tags | advisory, arbitrary
systems | linux, ubuntu
advisories | CVE-2022-23648
SHA-256 | bf0c845e991aeba0eca65f4b23d29f729ad0f1896214182e1ae0fa304a019039

Ubuntu Security Notice USN-5311-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-5311-2
May 16, 2022

containerd regression
==========================================================================

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

- Ubuntu 21.10
- Ubuntu 20.04 LTS

Summary:

USN-5311-1 fix was reverted by mistake in containerd.

Software Description:
- containerd: daemon to control runC

Details:

USN-5311-1 released updates for contained. Unfortunately, a subsequent update
reverted the fix for this CVE by mistake. This update corrects the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that containerd allows attackers to gain access to read-
only copies of arbitrary files and directories on the host via a specially-
crafted image configuration. An attacker could possibly use this issue to
obtain sensitive information.

Update instructions:

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

Ubuntu 21.10:
containerd 1.5.9-0ubuntu1~21.10.3

Ubuntu 20.04 LTS:
containerd 1.5.9-0ubuntu1~20.04.4

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-5311-2
https://ubuntu.com/security/notices/USN-5311-1
CVE-2022-23648

Package Information:
https://launchpad.net/ubuntu/+source/containerd/1.5.9-0ubuntu1~21.10.3
https://launchpad.net/ubuntu/+source/containerd/1.5.9-0ubuntu1~20.04.4
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