Cisco IOS DHCP Multiple Vulnerabilities

High Nessus Plugin ID 109087

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its self-reported version, the Cisco IOS software running on the remote device is affected by multiple denial of service vulnerabilities in the DHCP client implementation when parsing DHCP packets. An unauthenticated, remote attacker can exploit these issues, via specially crafted DHCP packets, to cause the device to reload.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvg62730, CSCvg62754, and CSCuh91645.

See Also

http://www.nessus.org/u?bfe8b7e0

http://www.nessus.org/u?2af6e16d

http://www.nessus.org/u?570bb167

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvg62730

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvg62754

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCuh91645

https://www.tenable.com/security/research/tra-2018-06

Plugin Details

Severity: High

ID: 109087

File Name: cisco-sa-20180328-dhcpr3-ios.nasl

Version: 1.6

Type: combined

Family: CISCO

Published: 2018/04/17

Updated: 2019/11/08

Dependencies: 47864

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 8.6

Temporal Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:ios

Required KB Items: Host/Cisco/IOS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 2018/03/28

Vulnerability Publication Date: 2018/03/28

Reference Information

CVE: CVE-2018-0172, CVE-2018-0173, CVE-2018-0174

BID: 103545, 103552, 103554