Denial of service in Cisco 800 Series Routers - CVE-2016-6423
Published: October 6, 2016 / Updated: April 5, 2018
Vulnerability identifier: #VU776
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-6423
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote unauthenticated user to cause DoS conditions on the target system.
The weakness is caused by insufficient validation of input as Internet Key Exchange version 2 (IKEv2) packets. By returning specially crafted packets to the affected device attackers force the victim to connect with IKEv2 server that allows them to trigger the system reload.
Successful exploitation of the vulnerability results in denial of service on the vulnerable system.
The weakness is caused by insufficient validation of input as Internet Key Exchange version 2 (IKEv2) packets. By returning specially crafted packets to the affected device attackers force the victim to connect with IKEv2 server that allows them to trigger the system reload.
Successful exploitation of the vulnerability results in denial of service on the vulnerable system.
Affected software
Cisco 800 Series Routers
How to mitigate CVE-2016-6423
Install update from vendor's website.