containerd: Multiple vulnerabilities — GLSA 202105-33

Multiple vulnerabilities have been found in containerd, the worst of which could result in privilege escalation.

Affected packages

app-emulation/containerd on all architectures
Affected versions < 1.4.4
Unaffected versions >= 1.4.4

Background

Containerd is a daemon with an API and a command line client, to manage containers on one machine. It uses runC to run containers according to the OCI specification.

Description

Multiple vulnerabilities have been discovered in containerd. Please review the CVE identifiers referenced below for details.

Impact

A local attacker, able to run a malicious container in the same network namespace as the shim, could possibly escalate privileges. Furthermore, an attacker could disclose sensitive information.

Workaround

There is no known workaround at this time.

Resolution

All containerd users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=app-emulation/containerd-1.4.4"
 

References

Release date
May 26, 2021

Latest revision
May 26, 2021: 1

Severity
high

Exploitable
local

Bugzilla entries