RHEL 7 : docker (RHSA-2018:2482)

medium Nessus Plugin ID 111805

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Synopsis

The remote Red Hat host is missing a security update for docker.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2018:2482 advisory.

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)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL docker package based on the guidance in RHSA-2018:2482.

Plugin Details

Severity: Medium

ID: 111805

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

Version: 1.9

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 8/17/2018

Updated: 11/5/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 1.4

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2018-10892

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:docker, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:docker-common, p-cpe:/a:redhat:enterprise_linux:docker-client, 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-logrotate, p-cpe:/a:redhat:enterprise_linux:docker-v1.10-migrator

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/16/2018

Vulnerability Publication Date: 7/6/2018

Reference Information

CVE: CVE-2018-10892

CWE: 250

RHSA: 2018:2482

Detections

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