Rockwell Automation Stratix Ethernet Switches < 15.3 IOS DHCP Reload DOS

High Nessus Network Monitor Plugin ID 720230

Synopsis

Rockwell Automation Stratix Ethernet Switches allow a remote attacker to cause a denial of service via crafted DHCPv4 packets.

Description

Rockwell Automation Stratix Ethernet Switches versions prior to 15.3 use a vulnerable version of Cisco IOS or IOS XE. A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software performs incomplete input validation of option 82 information that it receives in DHCP Version 4 (DHCPv4) packets from DHCP relay agents. An attacker could exploit this vulnerability by sending a crafted DHCPv4 packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCuh91645.

Solution

Perform vendor recommended mitigations and apply available vendor upgrades.

See Also

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr3

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

Plugin Details

Severity: High

ID: 720230

Family: SCADA

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.8

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

CVSS v3.0

Base Score: 8.6

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

Reference Information

CVE: CVE-2018-0174

BID: 103554