Synopsis
Important: container-tools:rhel8 security and bug fix update
Type/Severity
Security Advisory: Important
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 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 container-tools module contains tools for working with containers, notably podman, buildah, skopeo, and runc.
Security Fix(es):
- A flaw was found in the way runc handled system file descriptors when running containers. A malicious container could use this flaw to overwrite contents of the runc binary and consequently run arbitrary commands on the container host system. (CVE-2019-5736)
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.
Bug Fix(es):
- [stream rhel8] rebase container-selinux to 2.94 (BZ#1693675)
- [stream rhel8] unable to mount disk at `/var/lib/containers` via `systemd` unit when `container-selinux` policy installed (BZ#1695669)
- [stream rhel8] don't allow a container to connect to random services (BZ#1695689)
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 IBM z Systems 8 s390x
-
Red Hat Enterprise Linux for Power, little endian 8 ppc64le
-
Red Hat Enterprise Linux for ARM 64 8 aarch64
Fixes
- BZ - 1664908 - CVE-2019-5736 runc: Execution of malicious containers allows for container escape and access to host filesystem
- BZ - 1693675 - [stream rhel8] rebase container-selinux to 2.94
- BZ - 1695669 - [stream rhel8] unable to mount disk at `/var/lib/containers` via `systemd` unit when `container-selinux` policy installed
- BZ - 1695689 - [stream rhel8] don't allow a container to connect to random services
CVEs
References
Vulmon