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.

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.

ID	Name	Product	Family	Published	Updated	Severity
720230	Rockwell Automation Stratix Ethernet Switches < 15.3 IOS DHCP Reload DOS	Nessus Network Monitor	SCADA			high
109087	Cisco IOS DHCP Multiple Vulnerabilities	Nessus	CISCO	2018/04/17	2018/08/09	high
109088	Cisco IOS DHCP Multiple Vulnerabilities	Nessus	CISCO	2018/04/17	2019/01/18	high

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