CVE-2018-5733

Published: 1 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

CVSS 3 base score: 7.5

Status

Package	Release	Status
isc-dhcp Launchpad, Ubuntu, Debian	artful	Released (4.3.5-3ubuntu2.2)
	bionic	Released (4.3.5-3ubuntu5)
	precise	Released (4.1.ESV-R4-0ubuntu5.13)
	trusty	Released (4.2.4-7ubuntu12.12)
	upstream	Needs triage
	xenial	Released (4.3.3-5ubuntu12.9)

References

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5733
https://kb.isc.org/article/AA-01567/75/CVE-2018-5733
https://ubuntu.com/security/notices/USN-3586-1
https://ubuntu.com/security/notices/USN-3586-2
NVD
Launchpad
Debian

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