2.1 - RHSA-2016:2634

Problem Description:

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

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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux 7 Extras - x86_64

3. Description:

Docker is an open-source engine that automates the deployment of any application as a lightweight, portable, self-sufficient container that will run virtually anywhere.

Security Fix(es):

* It was found that Docker would launch containers under the specified UID instead of a username. An attacker able to launch a container could use this flaw to escalate their privileges to root within the launched container. (CVE-2016-3697)

This issue was discovered by Mrunal Patel (Red Hat).

Bug Fix(es):

* This update also provides various bug fixes and enhancements. Users are advised to upgrade to these updated packages.

4. 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

5. Bugs fixed (https://bugzilla.redhat.com/):

1303123 - docker requires an updated selinux-policy-targeted for interfaces it uses to be mainstream 1329450 - CVE-2016-3697 docker: privilege escalation via confusion of usernames and UIDs 1330141 - openonload applications fail inside containers 1335951 - heavy logging leads to Docker daemon OOM-ing 1336857 - SELinux context not set properly when building vagrant box 1346185 - Installing Extras 7.2 on RHEL 7.3 nightly causes wrong SELinux domain for the docker daemon and containers 1357121 - [extras-rhel-7.3.0] Docker ps -a shows dead pods that can't be removed 1358819 - docker is prevented from running container by selinux 1362611 - Cannot start container. oci-register-machine failed, permission denied 1370935 - docker-selinux broken in 7.3 1374265 - [extras-rhel-7.3.0] docker-py 1.7.2 hangs when trying to access ctr stats against docker 1.10 1385641 - sssd process are running in docker_t context instead of spc_t context