RHEL 7 : dhcp (RHSA-2018:1457)

High Nessus Plugin ID 109843

Synopsis

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

Description

An update for dhcp is now available for Red Hat Enterprise Linux 7.2 Advanced Update Support, Red Hat Enterprise Linux 7.2 Telco Extended Update Support, and Red Hat Enterprise Linux 7.2 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Critical. 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.

The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address. The dhcp packages provide a relay agent and ISC DHCP service required to enable and administer DHCP on a network.

Security Fix(es) :

* A command injection flaw was found in the NetworkManager integration script included in the DHCP client packages in Red Hat Enterprise Linux. A malicious DHCP server, or an attacker on the local network able to spoof DHCP responses, could use this flaw to execute arbitrary commands with root privileges on systems using NetworkManager and configured to obtain network configuration using the DHCP protocol.
(CVE-2018-1111)

Red Hat would like to thank Felix Wilhelm (Google Security Team) for reporting this issue.

Solution

Update the affected packages.

See Also

https://access.redhat.com/security/vulnerabilities/3442151

https://access.redhat.com/errata/RHSA-2018:1457

https://access.redhat.com/security/cve/cve-2018-1111

Plugin Details

Severity: High

ID: 109843

File Name: redhat-RHSA-2018-1457.nasl

Version: 1.14

Type: local

Agent: unix

Published: 2018/05/16

Updated: 2019/10/24

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.9

Temporal Score: 6.5

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

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

CVSS v3.0

Base Score: 7.5

Temporal Score: 6.9

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:dhclient, p-cpe:/a:redhat:enterprise_linux:dhcp, p-cpe:/a:redhat:enterprise_linux:dhcp-common, p-cpe:/a:redhat:enterprise_linux:dhcp-debuginfo, p-cpe:/a:redhat:enterprise_linux:dhcp-devel, p-cpe:/a:redhat:enterprise_linux:dhcp-libs, cpe:/o:redhat:enterprise_linux:7.2

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2018/05/15

Vulnerability Publication Date: 2018/05/17

Exploitable With

Metasploit (DHCP Client Command Injection (DynoRoot))

Reference Information

CVE: CVE-2018-1111

RHSA: 2018:1457

IAVA: 2018-A-0162