Vulmon
Amazon Linux AMI Security Advisory: ALAS-2018-984
Advisory Release Date: 2018-04-05 15:52 Pacific
Advisory Updated Date: 2018-04-05 23:12 Pacific
Severity:
Important
Issue Overview:
Buffer overflow in dhclient possibly allowing code execution triggered by malicious server
An out-of-bound memory access flaw was found in the way dhclient processed a DHCP response packet. A malicious DHCP server could potentially use this flaw to crash dhclient processes running on DHCP client machines via a crafted DHCP response packet. (CVE-2018-5732)
Reference count overflow in dhcpd allows denial of service
A denial of service flaw was found in the way dhcpd handled reference counting when processing client requests. A malicious DHCP client could use this flaw to trigger a reference count overflow on the server side, potentially causing dhcpd to crash, by sending large amounts of traffic. (CVE-2018-5733)
Affected Packages:
dhcp
Issue Correction:
Run yum update dhcp to update your system.
New Packages:
i686:
dhcp-4.1.1-53.P1.27.amzn1.i686
dhcp-debuginfo-4.1.1-53.P1.27.amzn1.i686
dhcp-common-4.1.1-53.P1.27.amzn1.i686
dhclient-4.1.1-53.P1.27.amzn1.i686
dhcp-devel-4.1.1-53.P1.27.amzn1.i686
src:
dhcp-4.1.1-53.P1.27.amzn1.src
x86_64:
dhcp-debuginfo-4.1.1-53.P1.27.amzn1.x86_64
dhcp-devel-4.1.1-53.P1.27.amzn1.x86_64
dhclient-4.1.1-53.P1.27.amzn1.x86_64
dhcp-common-4.1.1-53.P1.27.amzn1.x86_64
dhcp-4.1.1-53.P1.27.amzn1.x86_64