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TI-2017-09017 Aliases CVE-2017-12238GHSA-g8w4-jc9x-6qpc

Resource management flaw in Cisco IOS

Priority CRITICAL 86Exploited in the wildCWE-399Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.

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.

Why it matters now

Exploitation Active In CISA KEV since 2022-03-03CISA due date 2022-03-24
EPSS 0.02017 81st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Cisco IOSCisco IOS—No fix listedCNA
  • Cisco IOS Vendor— Affected Cisco IOS Fixed in — No fix listed CNA

CPE configurations NVD · 26

CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*15.0 – 15.4VulnerableCisco
cpe:2.3:h:cisco:c6800-16p10g:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:c6800-16p10g-xl:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:catalyst_6000:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:catalyst_6000_ws-svc-nam-1:2.2\(1a\):*:*:*:*:*:*:*2.2(1a)Running onCisco
cpe:2.3:h:cisco:catalyst_6000_ws-svc-nam-1:3.1\(1a\):*:*:*:*:*:*:*3.1(1a)Running onCisco
cpe:2.3:h:cisco:catalyst_6000_ws-svc-nam-2:2.2\(1a\):*:*:*:*:*:*:*2.2(1a)Running onCisco
cpe:2.3:h:cisco:catalyst_6000_ws-svc-nam-2:3.1\(1a\):*:*:*:*:*:*:*3.1(1a)Running onCisco
cpe:2.3:h:cisco:catalyst_6000_ws-x6380-nam:2.1\(2\):*:*:*:*:*:*:*2.1(2)Running onCisco
cpe:2.3:h:cisco:catalyst_6000_ws-x6380-nam:3.1\(1a\):*:*:*:*:*:*:*3.1(1a)Running onCisco
  • cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* Versions 15.0 – 15.4 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:c6800-16p10g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:c6800-16p10g-xl:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6000_ws-svc-nam-1:2.2\(1a\):*:*:*:*:*:*:* Versions 2.2(1a) Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6000_ws-svc-nam-1:3.1\(1a\):*:*:*:*:*:*:* Versions 3.1(1a) Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6000_ws-svc-nam-2:2.2\(1a\):*:*:*:*:*:*:* Versions 2.2(1a) Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6000_ws-svc-nam-2:3.1\(1a\):*:*:*:*:*:*:* Versions 3.1(1a) Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6000_ws-x6380-nam:2.1\(2\):*:*:*:*:*:*:* Versions 2.1(2) Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6000_ws-x6380-nam:3.1\(1a\):*:*:*:*:*:*:* Versions 3.1(1a) Running on ·Cisco
Show 16 more CPE
CPEVersionsRoleVendor
cpe:2.3:h:cisco:catalyst_6500:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:catalyst_6500-e:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-1:2.2\(1a\):*:*:*:*:*:*:*2.2(1a)Running onCisco
cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-1:3.1\(1a\):*:*:*:*:*:*:*3.1(1a)Running onCisco
cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-2:2.2\(1a\):*:*:*:*:*:*:*2.2(1a)Running onCisco
cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-2:3.1\(1a\):*:*:*:*:*:*:*3.1(1a)Running onCisco
cpe:2.3:h:cisco:catalyst_6500_ws-x6380-nam:2.1\(2\):*:*:*:*:*:*:*2.1(2)Running onCisco
cpe:2.3:h:cisco:catalyst_6500_ws-x6380-nam:3.1\(1a\):*:*:*:*:*:*:*3.1(1a)Running onCisco
cpe:2.3:h:cisco:catalyst_6503-e:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:catalyst_6504-e:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:catalyst_6506-e:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:catalyst_6509-e:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:catalyst_6509-neb-a:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:catalyst_6509-v-e:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:catalyst_6513:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:catalyst_6513-e:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:h:cisco:catalyst_6500:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6500-e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-1:2.2\(1a\):*:*:*:*:*:*:* Versions 2.2(1a) Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-1:3.1\(1a\):*:*:*:*:*:*:* Versions 3.1(1a) Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-2:2.2\(1a\):*:*:*:*:*:*:* Versions 2.2(1a) Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-2:3.1\(1a\):*:*:*:*:*:*:* Versions 3.1(1a) Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6500_ws-x6380-nam:2.1\(2\):*:*:*:*:*:*:* Versions 2.1(2) Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6500_ws-x6380-nam:3.1\(1a\):*:*:*:*:*:*:* Versions 3.1(1a) Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6503-e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6504-e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6506-e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6509-e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6509-neb-a:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6509-v-e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6513:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:catalyst_6513-e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2022-03-03 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2017-12238
  3. 2026-10-03 Alias added: GHSA-g8w4-jc9x-6qpc

References

Advisory 1

  • TI-2018-00138 Improper input validation in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-09019 Improper input validation in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-02977 Improper input validation in Cisco IOS and IOS XE Software KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-00135 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.8
  • TI-2017-04499 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
  • TI-2017-04498 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
See all 617 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences