CVE-2018-5732

2018-03-0100:00:00

ubuntu.com

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.002 Low

EPSS

Percentile

52.0%

JSON

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

OSVersionArchitecturePackageVersionFilename
ubuntu17.10noarchisc-dhcp< 4.3.5-3ubuntu2.2UNKNOWN
ubuntu18.04noarchisc-dhcp< 4.3.5-3ubuntu5UNKNOWN
ubuntu14.04noarchisc-dhcp< 4.2.4-7ubuntu12.12UNKNOWN
ubuntu16.04noarchisc-dhcp< 4.3.3-5ubuntu12.9UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	17.10	noarch	isc-dhcp	< 4.3.5-3ubuntu2.2	UNKNOWN
ubuntu	18.04	noarch	isc-dhcp	< 4.3.5-3ubuntu5	UNKNOWN
ubuntu	14.04	noarch	isc-dhcp	< 4.2.4-7ubuntu12.12	UNKNOWN
ubuntu	16.04	noarch	isc-dhcp	< 4.3.3-5ubuntu12.9	UNKNOWN