Vulnerabilities > CVE-2017-12237 - Unspecified vulnerability in Cisco IOS
Summary
A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS 15.0 through 15.6 and Cisco IOS XE 3.5 through 16.5 could allow an unauthenticated, remote attacker to cause high CPU utilization, traceback messages, or a reload of an affected device that leads to a denial of service (DoS) condition. The vulnerability is due to how an affected device processes certain IKEv2 packets. An attacker could exploit this vulnerability by sending specific IKEv2 packets to an affected device to be processed. A successful exploit could allow the attacker to cause high CPU utilization, traceback messages, or a reload of the affected device that leads to a DoS condition. This vulnerability affects Cisco devices that have the Internet Security Association and Key Management Protocol (ISAKMP) enabled. Although only IKEv2 packets can be used to trigger this vulnerability, devices that are running Cisco IOS Software or Cisco IOS XE Software are vulnerable when ISAKMP is enabled. A device does not need to be configured with any IKEv2-specific features to be vulnerable. Many features use IKEv2, including different types of VPNs such as the following: LAN-to-LAN VPN; Remote-access VPN, excluding SSL VPN; Dynamic Multipoint VPN (DMVPN); and FlexVPN. Cisco Bug IDs: CSCvc41277.
Vulnerable Configurations
Nessus
NASL family CISCO NASL id CISCO-SA-20170927-IKE-IOS_XE.NASL description According to its self-reported version, the Cisco IOS XE Software is affected by one or more vulnerabilities. Please see the included Cisco BIDs and the Cisco Security Advisory for more information. last seen 2020-06-01 modified 2020-06-02 plugin id 103694 published 2017-10-06 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103694 title Cisco IOS XE Software Internet Key Exchange Denial of Service Vulnerability NASL family CISCO NASL id CISCO-SA-20170927-IKE-IOS.NASL description According to its self-reported version, the IOS is affected by one or more vulnerabilities. Please see the included Cisco BIDs and the Cisco Security Advisory for more information. last seen 2020-06-01 modified 2020-06-02 plugin id 103693 published 2017-10-06 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103693 title Cisco IOS Software Internet Key Exchange Denial of Service Vulnerability