RHSA-2021:1796 - Security Advisory

Topic

An update for the container-tools:rhel8 module is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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 container-tools module contains tools for working with containers, notably podman, buildah, skopeo, and runc.

Security Fix(es):

• golang: crypto/ssh: crafted authentication request can lead to nil pointer dereference (CVE-2020-29652)
• podman: Remote traffic to rootless containers is seen as orginating from localhost (CVE-2021-20199)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from 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 for x86_64 8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.4 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.4 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.6 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.4 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.6 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.4 ppc64le
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• Red Hat Enterprise Linux Server - TUS 8.4 x86_64
• Red Hat Enterprise Linux for ARM 64 8 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.6 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.4 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.4 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.4 x86_64

Fixes

• BZ - 1707078 - Image signature only has one docker registry reference, would like the ability to have two hostnames sign them.
• BZ - 1724946 - Can not verify signed image signature in OCP 4
• BZ - 1726442 - SIGTERM from systemd to containers|conmon on shutdown causes unexpected results
• BZ - 1763007 - --log-opt for podman run does not work as expected
• BZ - 1770037 - (podman sign) does not handle multi-arch images
• BZ - 1798278 - subscription-manager recommends drags in too much into RHCOS
• BZ - 1811773 - [RFE] cockpit-podman ability to set selinux contexts for volumes
• BZ - 1838233 - address coverity warnings
• BZ - 1841485 - podman exec is fragile in the presence of signals
• BZ - 1844199 - [RFE] Add remapIdentity suggestion to simplify policy configuration
• BZ - 1853455 - podman ignores infra_command option from containers.conf
• BZ - 1860176 - OCI Runtime kata-runtime is in use by a container, but is not available
• BZ - 1867892 - running containerized buildah leads to error
• BZ - 1881894 - podman-remote: dial unix ///run/podman/podman.sock: connect: no such file or directory
• BZ - 1897282 - podman-wait requiring units for interval when it is documented as optional
• BZ - 1897594 - update description and summary for container-tools module for 8.3.0
• BZ - 1902979 - podman run fails to update /etc/hosts when --uidmap is provided
• BZ - 1903813 - [RFE] Ship preconfigured /etc/containers/registries.d/ files with containers-common
• BZ - 1904549 - POST to /networks/create with docker compatible API results in panic
• BZ - 1908883 - CVE-2020-29652 golang: crypto/ssh: crafted authentication request can lead to nil pointer dereference
• BZ - 1915383 - Podman "--format" does not support "join"
• BZ - 1918554 - error bind mounting /dev from host into mount namespace: mkdir /var/tmp/buildah396339746/mnt/rootfs/dev: operation not permitted
• BZ - 1919050 - CVE-2021-20199 podman: Remote traffic to rootless containers is seen as orginating from localhost
• BZ - 1921128 - [gss][podman]Getting the error while starting container "Error: readlink /var/lib/containers/storage/overlay/l/XXX no such file or directory"
• BZ - 1923986 - podman: Installation instructions for rootless podman do not work
• BZ - 1924146 - RFE Bind mounting host volume using Podman REST API
• BZ - 1931545 - podman 3.0.1 ships with a v2 go module
• BZ - 1931785 - shortname for ubi8-minimal leads to "Repo not found" error
• BZ - 1932083 - Podman will pull image for rootless CNI
• BZ - 1935376 - Regression: Overlay mounts is broken on existing directories.
• BZ - 1935922 - Unable to run multi-stage builds with rootless buildah container
• BZ - 1936927 - regressions cp command in Podman v3.0
• BZ - 1937487 - Podman socket failing to connect with long uid
• BZ - 1938234 - Variety of errors during rootless container image creation

CVEs

• CVE-2020-29652
• CVE-2021-20199

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/