CVE-2017-12238
Cisco Catalyst 6800 Series Switches VPLS Denial-of-Service Vulnerability
Exploited in the wild
This vulnerability is on a Known Exploited Vulnerabilities catalogue, added 2022-03-03. Federal due date: 2022-03-24.
Apply updates per vendor instructions.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Cisco | Ios | from 15.0 through 15.4 |
Weakness classification
References
- NVD record
- CVE.org record
- CISA KEV catalog
- http://www.securityfocus.com/bid/101040
- http://www.securitytracker.com/id/1039453
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-vpls
- http://www.securityfocus.com/bid/101040
- http://www.securitytracker.com/id/1039453
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-vpls
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-12238