CVE-2018-5732

CVE Details

Release Date:	2019-10-09
Impact:	None	What is this?

Description

Failure to properly bounds-check a buffer used for processing DHCP options allows a malicious server (or an entity masquerading as a server) to cause a buffer overflow (and resulting crash) in dhclient by sending a response containing a specially constructed options section. Affects ISC DHCP versions 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0

See more information about CVE-2018-5732 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	7.5
Vector String:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Version:	3.0
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	None
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (dhcp)	ELSA-2018-0469	2018-03-08
Oracle Linux version 7 (dhcp)	ELSA-2018-0483	2018-03-12
Oracle VM version 3.3 (dhcp)	OVMSA-2018-0023	2018-03-08
Oracle VM version 3.3 (dhcp)	OVMSA-2018-0024	2018-03-08
Oracle VM version 3.4 (dhcp)	OVMSA-2018-0023	2018-03-08
Oracle VM version 3.4 (dhcp)	OVMSA-2018-0024	2018-03-08