Vulnerability Description
A vulnerability in the ingress flow creation functionality of Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause the CPU to increase upwards of 100% utilization, causing a denial of service (DoS) condition on an affected system. The vulnerability is due to incorrect handling of an internal software lock that could prevent other system processes from getting CPU cycles, causing a high CPU condition. An attacker could exploit this vulnerability by sending a steady stream of malicious IP packets that can cause connections to be created on the targeted device. A successful exploit could allow the attacker to exhaust CPU resources, resulting in a DoS condition during which traffic through the device could be delayed. This vulnerability applies to either IPv4 or IPv6 ingress traffic. This vulnerability affects Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) Software that is running on the following Cisco products: 3000 Series Industrial Security Appliances (ISA), ASA 5500 Series Adaptive Security Appliances, ASA 5500-X Series Next-Generation Firewalls, ASA Services Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers, Adaptive Security Virtual Appliances (ASAv), Firepower 2100 Series Security Appliances, Firepower 4110 Security Appliances, Firepower 9300 ASA Security Modules. Cisco Bug IDs: CSCvf63718.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Adaptive Security Appliance Software | >= 9.1, < 9.1.7.20 |
| Cisco | Firepower Threat Defense | >= 6.0, < 6.1.0.6 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/104220Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040724Third Party AdvisoryVDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-184-01Third Party AdvisoryUS Government Resource
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2MitigationVendor Advisory
- http://www.securityfocus.com/bid/104220Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040724Third Party AdvisoryVDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-184-01Third Party AdvisoryUS Government Resource
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2MitigationVendor Advisory
FAQ
What is CVE-2018-0228?
CVE-2018-0228 is a vulnerability with a CVSS score of 8.6 (HIGH). A vulnerability in the ingress flow creation functionality of Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause the CPU to increase upwards of 100% utili...
How severe is CVE-2018-0228?
CVE-2018-0228 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-0228?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Adaptive Security Appliance Software, Cisco Firepower Threat Defense.