CVE-2017-12238 KEV
Patch first
On CISA KEV — known exploited in the wild, due 2022-03-24.
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.
Scoring
| CVSS | 6.5 (MEDIUM, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| EPSS | 2.02% — more likely to be exploited than 80% of all CVEs |
| Weakness | CWE-399 |
| On CISA KEV | yes — remediate by 2022-03-24 |
| Public exploit | none known |
| Published | 2017-09-29 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Cisco Catalyst 6800 Series Switches VPLS Denial-of-Service Vulnerability |
|---|---|
| Added | 2022-03-03 |
| Due | 2022-03-24 |
| Vendor / product | Cisco / Catalyst 6800 Series Switches |
| Ransomware use | none reported |
Affected (20)
| Vendor | Product |
|---|---|
| cisco | c6800-16p10g |
| cisco | c6800-16p10g-xl |
| cisco | catalyst 6000 |
| cisco | catalyst 6000 ws-svc-nam-1 |
| cisco | catalyst 6000 ws-svc-nam-2 |
| cisco | catalyst 6000 ws-x6380-nam |
| cisco | catalyst 6500 |
| cisco | catalyst 6500 ws-svc-nam-1 |
| cisco | catalyst 6500 ws-svc-nam-2 |
| cisco | catalyst 6500 ws-x6380-nam |
| cisco | catalyst 6500-e |
| 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 |
| cisco | ios |
References
- 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
→ the Explorer · watch your stack · NVD