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RHEL 7 : docker (RHSA-2018:2482)

medium Nessus Plugin ID 111805

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Synopsis

The remote Red Hat host is missing one or more security updates.

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.

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

Security Fix(es) :

* docker: container breakout without selinux in enforcing mode (CVE-2018-10892)

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

This issue was discovered by Antonio Murdaca (Red Hat).

Bug Fix(es) :

* Previously, the `dontaudit` and `allow` SELinux rules were missing, so the kernel raised a SELinux AVC message. Consequently, some commands did not work as expected. This update adds the missing rules, and the commands now run successfully. (BZ#1550967)

* Previously, during a restart the container daemon did not restore the state of a container correctly if an exec'ed process was associated with the container. Consequently, the container daemon aborted with 'panic: close of nil channel' when the daemon was handling the termination of the exec'ed process. This bug has been fixed, and the container daemon no longer panics in the aforementioned scenario. (BZ#1554121)

* Previously, bind mounts were resolved before using them inside a container. Consequently, symlinks could not be mounted inside of the container. With this update, the source of a bind mount is not resolved. As a result, it is possible to bind mount symlinks again into a container. (BZ#1603201)

Solution

Update the affected packages.

See Also

https://access.redhat.com/errata/RHSA-2018:2482

https://access.redhat.com/security/cve/cve-2018-10892

Plugin Details

Severity: Medium

ID: 111805

File Name: redhat-RHSA-2018-2482.nasl

Version: 1.6

Type: local

Agent: unix

Published: 8/17/2018

Updated: 10/24/2019

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:docker, p-cpe:/a:redhat:enterprise_linux:docker-client, p-cpe:/a:redhat:enterprise_linux:docker-common, p-cpe:/a:redhat:enterprise_linux:docker-debuginfo, p-cpe:/a:redhat:enterprise_linux:docker-logrotate, p-cpe:/a:redhat:enterprise_linux:docker-lvm-plugin, p-cpe:/a:redhat:enterprise_linux:docker-novolume-plugin, p-cpe:/a:redhat:enterprise_linux:docker-rhel-push-plugin, p-cpe:/a:redhat:enterprise_linux:docker-v1.10-migrator, cpe:/o:redhat:enterprise_linux:7

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Patch Publication Date: 8/16/2018

Vulnerability Publication Date: 7/6/2018

Reference Information

CVE: CVE-2018-10892

RHSA: 2018:2482