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A vulnerability in the DHCP client implementation of Cisco IOS (12.2, 12.4, and 15.0 through 15.6) and Cisco IOS XE (3.3 through 3.7) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability occurs during the parsing of a crafted DHCP packet. An attacker could exploit this vulnerability by sending crafted DHCP packets to an affected device that is configured as a DHCP client. A successful exploit could allow the attacker to cause a reload of an affected device, resulting in a DoS condition. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS or IOS XE Software and using a specific DHCP client configuration. Cisco Bug IDs: CSCuu43892.
Base Score: 7.8
Impact Score: 6.9
Exploitability Score: 10
Base Score: 8.6
Impact Score: 4
Exploitability Score: 3.9
cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* versions from 15.0 to 15.6 (inclusive)
cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:* versions from 3.3 to 3.7 (inclusive)