Vulnerability Description
A vulnerability in the Virtual Private LAN Service (VPLS) code of Cisco IOS 15.0 through 15.4 for Cisco Catalyst 6800 Series Switches could allow an unauthenticated, adjacent attacker to cause a C6800-16P10G or C6800-16P10G-XL type line card to crash, resulting in a denial of service (DoS) condition. The vulnerability is due to a memory management issue in the affected software. An attacker could exploit this vulnerability by creating a large number of VPLS-generated MAC entries in the MAC address table of an affected device. A successful exploit could allow the attacker to cause a C6800-16P10G or C6800-16P10G-XL type line card to crash, resulting in a DoS condition. This vulnerability affects Cisco Catalyst 6800 Series Switches that are running a vulnerable release of Cisco IOS Software and have a Cisco C6800-16P10G or C6800-16P10G-XL line card in use with Supervisor Engine 6T. To be vulnerable, the device must also be configured with VPLS and the C6800-16P10G or C6800-16P10G-XL line card needs to be the core-facing MPLS interfaces. Cisco Bug IDs: CSCva61927.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios | >= 15.0, <= 15.4 |
| Cisco | C6800-16P10G | - |
| Cisco | C6800-16P10G-Xl | - |
| Cisco | Catalyst 6000 | - |
| Cisco | Catalyst 6000 Ws-Svc-Nam-1 | 2.2\(1a\) |
| Cisco | Catalyst 6000 Ws-Svc-Nam-2 | 2.2\(1a\) |
| Cisco | Catalyst 6000 Ws-X6380-Nam | 2.1\(2\) |
| Cisco | Catalyst 6500 | - |
| Cisco | Catalyst 6500-E | - |
| Cisco | Catalyst 6500 Ws-Svc-Nam-1 | 2.2\(1a\) |
| Cisco | Catalyst 6500 Ws-Svc-Nam-2 | 2.2\(1a\) |
| Cisco | Catalyst 6500 Ws-X6380-Nam | 2.1\(2\) |
| Cisco | Catalyst 6503-E | - |
| Cisco | Catalyst 6504-E | - |
| Cisco | Catalyst 6506-E | - |
| Cisco | Catalyst 6509-E | - |
| Cisco | Catalyst 6509-Neb-A | - |
| Cisco | Catalyst 6509-V-E | - |
| Cisco | Catalyst 6513 | - |
| Cisco | Catalyst 6513-E | - |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/101040Broken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039453Broken LinkThird Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
- http://www.securityfocus.com/bid/101040Broken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039453Broken 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-2017-12238?
CVE-2017-12238 is a vulnerability with a CVSS score of 6.5 (MEDIUM). A vulnerability in the Virtual Private LAN Service (VPLS) code of Cisco IOS 15.0 through 15.4 for Cisco Catalyst 6800 Series Switches could allow an unauthenticated, adjacent attacker to cause a C6800...
How severe is CVE-2017-12238?
CVE-2017-12238 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-12238?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios, Cisco C6800-16P10G, Cisco C6800-16P10G-Xl, Cisco Catalyst 6000, Cisco Catalyst 6000 Ws-Svc-Nam-1.