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CVE-2017-12238: Cisco Catalyst 6800 Series Switches VPLS Denial-of-Service Vulnerability

Medium · CVSS 6.5 (CVSS 3.1)KEV known exploitedEPSS 2.0%, 81th percentilePublished Updated Assigner: cisco

In CISA’s Known Exploited Vulnerabilities catalog: Cisco Catalyst 6800 Series Switches VPLS Denial-of-Service Vulnerability.

Added , federal remediation due . Known ransomware use: Unknown.

Required action: Apply updates per vendor instructions.

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.

Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · CWE-399

Status incidents that name it

No tracked status incident names this CVE.

Affected vendors and products

Cisco IOS

References

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