CVE-2018-5733

Published: 01 March 2018

A malicious client which is allowed to send very large amounts of traffic (billions of packets) to a DHCP server can eventually overflow a 32-bit reference counter, potentially causing dhcpd to crash. Affects ISC DHCP 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
isc-dhcp
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.3.5-3ubuntu5)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.3.3-5ubuntu12.9)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.2.4-7ubuntu12.12)