CVE Catalog

CVE-2017-3864

High
Published: Translated: NVD NIST

Summary

A vulnerability in the DHCP client implementation of Cisco IOS and Cisco IOS XE could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. It occurs during the parsing of a crafted DHCP packet.

Risk Assessment

An attacker could exploit this vulnerability by sending crafted DHCP packets to an affected device, potentially causing it to reload and resulting in a DoS condition.

Recommendation

It is recommended to update Cisco IOS or IOS XE software to the latest version to mitigate this vulnerability and review the DHCP client configuration.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS