Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software IKEv2 Certificate Authentication Denial of Service Vulnerability
Cisco patched an ASA/FTD IKEv2 certificate authentication flaw letting unauthenticated remote attackers crash the IKEv2 process and reload devices with crafted certificates.
A logic error during the certificate authentication phase of IKEv2 connection setup in Cisco Secure Firewall ASA and FTD Software allows an unauthenticated, remote attacker to crash the IKEv2 process. Exploitation involves attempting to establish an IKEv2 VPN connection with a crafted certificate, causing a denial of service through an unexpected device reload. Cisco has released software updates.
- Logic error in IKEv2 certificate authentication phase of connection setup
- Crafted certificate during VPN setup crashes the IKEv2 process
- Successful exploit causes unexpected device reload and denial of service
- Cisco has released software updates
A vulnerability in the certification authentication feature of Internet Key Exchange version 2 (IKEv2) for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly. This vulnerability is due to a logic error during the certificate authentication phase of the IKEv2 connection setup. An attacker could exploit this vulnerability by attempting to establish an IKEv2 VPN connection with a crafted certificate. A successful exploit could allow the attacker to cause the IKEv2 process to crash, causing a denial of service (DoS)…
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