The DHCP relay subsystem of Cisco IOS 12.2 through 15.6...
Critical severity
Unreviewed
Published
May 13, 2022
to the GitHub Advisory Database
•
Updated Jul 16, 2024
Description
Published by the National Vulnerability Database
Sep 29, 2017
Published to the GitHub Advisory Database
May 13, 2022
Last updated
Jul 16, 2024
The DHCP relay subsystem of Cisco IOS 12.2 through 15.6 and Cisco IOS XE Software contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code and gain full control of an affected system. The attacker could also cause an affected system to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to a buffer overflow condition in the DHCP relay subsystem of the affected software. An attacker could exploit this vulnerability by sending a crafted DHCP Version 4 (DHCPv4) packet to an affected system. A successful exploit could allow the attacker to execute arbitrary code and gain full control of the affected system or cause the affected system to reload, resulting in a DoS condition. Cisco Bug IDs: CSCsm45390, CSCuw77959.
References