A vulnerability in the Cisco IOS Software and Cisco IOS XE Software function that restores encapsulated option 82 information in DHCP Version 4 (DHCPv4) packets could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a Relay Reply denial of service (DoS) condition. The vulnerability exists because the affected software performs incomplete input validation of encapsulated option 82 information that it receives in DHCPOFFER messages from DHCPv4 servers. An attacker could exploit this vulnerability by sending a crafted DHCPv4 packet to an affected device, which the device would then forward to a DHCPv4 server. When the affected software processes the option 82 information that is encapsulated in the response from the server, an error could occur. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCvg62754.
History

Wed, 13 Nov 2024 19:15:00 +0000

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2022-03-03'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2018-03-28T22:00:00

Updated: 2024-11-13T18:23:46.017Z

Reserved: 2017-11-27T00:00:00

Link: CVE-2018-0173

cve-icon Vulnrichment

Updated: 2024-08-05T03:14:16.865Z

cve-icon NVD

Status : Modified

Published: 2018-03-28T22:29:01.170

Modified: 2024-11-21T03:37:39.563

Link: CVE-2018-0173

cve-icon Redhat

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