Improper input validation in Cisco IOS - CVE-2017-12237
Published: October 4, 2017 / Updated: March 8, 2022
Vulnerability identifier: #VU8682
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:A/U:Clear
CVE-ID: CVE-2017-12237
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: Cisco Systems, Inc
Affected software:
Cisco IOS
Cisco IOS
Detailed vulnerability description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists in the Internet Key Exchange Version 2 (IKEv2) module due to an error when processing certain IKEv2 packets. A remote attacker can send specially crafted IKEv2 packets to the device and cause high CPU utilization, traceback messages, or a device reload.
Successful exploitation of the vulnerability results in denial of service.
How to mitigate CVE-2017-12237
Install update from vendor's website.