RHSA-2018:1459: Critical: dhcp security update
First published: Tue May 15 2018(Updated: )
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.<br>Security Fix(es):<br><li> 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)</li> Red Hat would like to thank Felix Wilhelm (Google Security Team) for reporting this issue.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/dhcp | <4.1.1-43.P1.el6_6.2 | 4.1.1-43.P1.el6_6.2 |
| redhat/dhclient | <4.1.1-43.P1.el6_6.2 | 4.1.1-43.P1.el6_6.2 |
| redhat/dhcp | <4.1.1-43.P1.el6_6.2 | 4.1.1-43.P1.el6_6.2 |
| redhat/dhcp-common | <4.1.1-43.P1.el6_6.2 | 4.1.1-43.P1.el6_6.2 |
| redhat/dhcp-debuginfo | <4.1.1-43.P1.el6_6.2 | 4.1.1-43.P1.el6_6.2 |
| redhat/dhcp-debuginfo | <4.1.1-43.P1.el6_6.2 | 4.1.1-43.P1.el6_6.2 |
| redhat/dhcp-devel | <4.1.1-43.P1.el6_6.2 | 4.1.1-43.P1.el6_6.2 |
| redhat/dhcp-devel | <4.1.1-43.P1.el6_6.2 | 4.1.1-43.P1.el6_6.2 |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2018:1459?
The severity of RHSA-2018:1459 is important as it pertains to vulnerabilities in the DHCP protocol that can affect network configurations.
How do I fix RHSA-2018:1459?
To fix RHSA-2018:1459, upgrade affected packages to version 4.1.1-43.P1.el6_6.2 or later.
Which packages are affected by RHSA-2018:1459?
Affected packages for RHSA-2018:1459 include dhcp, dhclient, dhcp-common, dhcp-debuginfo, and dhcp-devel.
What impact does RHSA-2018:1459 have on my system?
RHSA-2018:1459 can lead to potential issues with network configuration and could expose the system to attacks.
Is there a specific platform affected by RHSA-2018:1459?
Yes, RHSA-2018:1459 specifically affects Red Hat Enterprise Linux 6 (el6_6) versions of the DHCP packages.
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