RHSA-2021:0681 - Security Advisory

Topic

An update for podman is now available for Red Hat Enterprise Linux 7 Extras.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The podman tool manages pods, container images, and containers. It is part of the libpod library, which is for applications that use container pods. Container pods is a concept in Kubernetes.

Security Fix(es):

• podman: container users permissions are not respected in privileged containers (CVE-2021-20188)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le

Fixes

• BZ - 1915734 - CVE-2021-20188 podman: container users permissions are not respected in privileged containers
• BZ - 1930552 - podman can not create user inside of container - regression introduced by fix for CVE-2021-20188

CVEs

• CVE-2021-20188

References

• https://access.redhat.com/security/updates/classification/#important