USN-5776-1: containerd vulnerabilities

Releases

• Ubuntu 22.10
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM

Packages

• containerd - daemon to control runC

Details

It was discovered that containerd incorrectly handled memory
when receiving certain faulty Exec or ExecSync commands. A remote
attacker could possibly use this issue to cause a denial of service
or crash containerd. (CVE-2022-23471, CVE-2022-31030)

It was discovered that containerd incorrectly set up inheritable file
capabilities. An attacker could possibly use this issue to escalate
privileges inside a container. This issue only affected Ubuntu 18.04 LTS,
Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-24769)

It was discovered that containerd incorrectly handled access to encrypted
container images when using imgcrypt library. A remote attacker could
possibly use this issue to access encrypted images from other users.
This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and
Ubuntu 22.04 LTS. (CVE-2022-24778)

Update instructions

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

Ubuntu 22.10

• containerd - 1.6.4-0ubuntu1.1

Ubuntu 22.04

• containerd - 1.5.9-0ubuntu3.1

Ubuntu 20.04

• containerd - 1.5.9-0ubuntu1~20.04.6

Ubuntu 18.04

• containerd - 1.5.9-0ubuntu1~18.04.2

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

References

• CVE-2022-24778
• CVE-2022-24769
• CVE-2022-23471
• CVE-2022-31030

Related notices

• USN-5521-1