Vulnerabilities > CVE-2017-12238 - Unspecified vulnerability in Cisco IOS
Summary
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.
Vulnerable Configurations
Nessus
| NASL family | CISCO |
| NASL id | CISCO-SA-20170927-VPLS.NASL |
| description | According to its self-reported version and configuration, the Cisco IOS software running on the remote device is affected by a denial of service vulnerability in the Virtual Private LAN Service (VPLS) feature. An unauthenticated, remote attacker can exploit this, via specially crafted requests, to cause the switch to stop processing traffic, requiring a device restart to regain functionality. |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 103672 |
| published | 2017-10-05 |
| reporter | This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. |
| source | https://www.tenable.com/plugins/nessus/103672 |
| title | Cisco IOS Software VPLS denial of service (cisco-sa-20170927-vpls) |