Low: dhcp

Issue Overview:

Command injection vulnerability in the DHCP client NetworkManager integration script
A command injection flaw was found in the NetworkManager integration script included in the DHCP client packages in Amazon Linux 2. 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 )

Note: As mentioned above, the fix for this issue is in the NetworkManager integration script included with the dhcp package. The severity of this advisory has been lowered to a low as the Amazon Linux AMI does not use NetworkManager.

Affected Packages:

dhcp

Issue Correction:
Run yum update dhcp to update your system.

New Packages:

i686:  
    dhcp-devel-4.1.1-53.P1.28.amzn1.i686  
    dhcp-debuginfo-4.1.1-53.P1.28.amzn1.i686  
    dhcp-common-4.1.1-53.P1.28.amzn1.i686  
    dhcp-4.1.1-53.P1.28.amzn1.i686  
    dhclient-4.1.1-53.P1.28.amzn1.i686  
  
src:  
    dhcp-4.1.1-53.P1.28.amzn1.src  
  
x86_64:  
    dhcp-debuginfo-4.1.1-53.P1.28.amzn1.x86_64  
    dhcp-devel-4.1.1-53.P1.28.amzn1.x86_64  
    dhcp-4.1.1-53.P1.28.amzn1.x86_64  
    dhclient-4.1.1-53.P1.28.amzn1.x86_64  
    dhcp-common-4.1.1-53.P1.28.amzn1.x86_64  

Additional References

Red Hat: CVE-2018-1111

Mitre: CVE-2018-1111