CVE-2022-2929

Published: 5 October 2022

In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server, sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the server to run out of memory.

Priority

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package	Release	Status
isc-dhcp Launchpad, Ubuntu, Debian	bionic	Released (4.3.5-3ubuntu7.4)
	focal	Released (4.4.1-2.1ubuntu5.20.04.4)
	jammy	Released (4.4.1-2.3ubuntu2.3)
	kinetic	Released (4.4.3-2ubuntu4)
	trusty	Released (4.2.4-7ubuntu12.13+esm2) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (4.4.3-P1,4.1-ESV-R16-P2)
	xenial	Released (4.3.3-5ubuntu12.10+esm2) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)

Severity score breakdown

Parameter	Value
Base score	6.5
Attack vector	Adjacent
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

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