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CVE-2017-12238

Severity CVSS v4.0:
Pending analysis
Type:
CWE-399 Resource Management Errors
Publication date:
29/09/2017
Last modified:
20/04/2025

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.

Impact

Vector 3.x
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
6.50
Severity 3.x
MEDIUM
Vector 2.0
AV:A/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 3.30 LOW
Vector: AV:A/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
3.30
Severity 2.0
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* 15.0 (including) 15.4 (including)
cpe:2.3:h:cisco:c6800-16p10g:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:c6800-16p10g-xl:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_6000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_6000_ws-svc-nam-1:2.2\(1a\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_6000_ws-svc-nam-1:3.1\(1a\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_6000_ws-svc-nam-2:2.2\(1a\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_6000_ws-svc-nam-2:3.1\(1a\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_6000_ws-x6380-nam:2.1\(2\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_6000_ws-x6380-nam:3.1\(1a\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_6500:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_6500-e:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-1:2.2\(1a\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-1:3.1\(1a\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-2:2.2\(1a\):*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools