Vulnerability Description
A vulnerability in the implementation of Network Address Translation (NAT) functionality in Cisco IOS 12.4 through 15.6 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to the improper translation of H.323 messages that use the Registration, Admission, and Status (RAS) protocol and are sent to an affected device via IPv4 packets. An attacker could exploit this vulnerability by sending a crafted H.323 RAS packet through an affected device. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition. This vulnerability affects Cisco devices that are configured to use an application layer gateway with NAT (NAT ALG) for H.323 RAS messages. By default, a NAT ALG is enabled for H.323 RAS messages. Cisco Bug IDs: CSCvc57217.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios | >= 12.4, <= 15.6 |
| Cisco | 1100-4G\/6G Integrated Services Router | - |
| Cisco | 1100-4G Integrated Services Router | - |
| Cisco | 1100-4Gltegb Integrated Services Router | - |
| Cisco | 1100-4Gltena Integrated Services Router | - |
| Cisco | 1100-4P Integrated Services Router | - |
| Cisco | 1100-6G Integrated Services Router | - |
| Cisco | 1100-8P Integrated Services Router | - |
| Cisco | 1100-Lte Integrated Services Router | - |
| Cisco | 1100 Integrated Services Router | - |
| Cisco | 1100 Terminal Services Gateways | - |
| Cisco | 1101-4P Integrated Services Router | - |
| Cisco | 1101 Integrated Services Router | - |
| Cisco | 1109-2P Integrated Services Router | - |
| Cisco | 1109-4P Integrated Services Router | - |
| Cisco | 1109 Integrated Services Router | - |
| Cisco | 1111X-8P Integrated Services Router | - |
| Cisco | 111X Integrated Services Router | - |
| Cisco | 1120 Integrated Services Router | - |
| Cisco | 1131 Integrated Services Router | - |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/101039Broken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039449Broken LinkThird Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
- http://www.securityfocus.com/bid/101039Broken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039449Broken LinkThird Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-US Government Resource
FAQ
What is CVE-2017-12231?
CVE-2017-12231 is a vulnerability with a CVSS score of 7.5 (HIGH). A vulnerability in the implementation of Network Address Translation (NAT) functionality in Cisco IOS 12.4 through 15.6 could allow an unauthenticated, remote attacker to cause a denial of service (Do...
How severe is CVE-2017-12231?
CVE-2017-12231 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-12231?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios, Cisco 1100-4G\/6G Integrated Services Router, Cisco 1100-4G Integrated Services Router, Cisco 1100-4Gltegb Integrated Services Router, Cisco 1100-4Gltena Integrated Services Router.