Vulnerability Monitor

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CVE-2017-12238


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.


Published

2017-09-29T01:34:48.997

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

AV:A/AC:L/Au:N/C:N/I:N/A:P

  • Access Vector: ADJACENT_NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

6.5

Impact Score

2.9

Weaknesses
  • Type: Secondary
    CWE-399
  • Type: Primary
    NVD-CWE-noinfo

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco ios ≤ 15.4 Yes
Hardware cisco c6800-16p10g - No
Hardware cisco c6800-16p10g-xl - No
Hardware cisco catalyst_6000 - No
Hardware cisco catalyst_6000_ws-svc-nam-1 2.2\(1a\) No
Hardware cisco catalyst_6000_ws-svc-nam-1 3.1\(1a\) No
Hardware cisco catalyst_6000_ws-svc-nam-2 2.2\(1a\) No
Hardware cisco catalyst_6000_ws-svc-nam-2 3.1\(1a\) No
Hardware cisco catalyst_6000_ws-x6380-nam 2.1\(2\) No
Hardware cisco catalyst_6000_ws-x6380-nam 3.1\(1a\) No
Hardware cisco catalyst_6500 - No
Hardware cisco catalyst_6500-e - No
Hardware cisco catalyst_6500_ws-svc-nam-1 2.2\(1a\) No
Hardware cisco catalyst_6500_ws-svc-nam-1 3.1\(1a\) No
Hardware cisco catalyst_6500_ws-svc-nam-2 2.2\(1a\) No
Hardware cisco catalyst_6500_ws-svc-nam-2 3.1\(1a\) No
Hardware cisco catalyst_6500_ws-x6380-nam 2.1\(2\) No
Hardware cisco catalyst_6500_ws-x6380-nam 3.1\(1a\) No
Hardware cisco catalyst_6503-e - No
Hardware cisco catalyst_6504-e - No
Hardware cisco catalyst_6506-e - No
Hardware cisco catalyst_6509-e - No
Hardware cisco catalyst_6509-neb-a - No
Hardware cisco catalyst_6509-v-e - No
Hardware cisco catalyst_6513 - No
Hardware cisco catalyst_6513-e - No

References