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TI-2017-09014 Aliases CVE-2017-12235GHSA-83w7-v79x-495q

Improper input validation in Cisco IOS

Priority CRITICAL 90Exploited in the wildCWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

A vulnerability in the implementation of the PROFINET Discovery and Configuration Protocol (PN-DCP) for Cisco IOS 12.2 through 15.6 could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to the improper parsing of ingress PN-DCP Identify Request packets destined to an affected device. An attacker could exploit this vulnerability by sending a crafted PN-DCP Identify Request packet to an affected device and then continuing to send normal PN-DCP Identify Request packets to the device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. This vulnerability affects Cisco devices that are configured to process PROFINET messages. Beginning with Cisco IOS Software Release 12.2(52)SE, PROFINET is enabled by default on all the base switch module and expansion-unit Ethernet ports. Cisco Bug IDs: CSCuz47179.

Why it matters now

Exploitation Active In CISA KEV since 2022-03-03CISA due date 2022-03-24
EPSS 0.0707 94th 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
Yes
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 · 31

CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*12.2 – 15.6VulnerableCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_16ptc-g-e_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_16ptc-g-l_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_16ptc-g-nx_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_16t67-b_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_16t67p-g-e_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-g-e_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-g-l_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-g-n_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-g-x_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* Versions 12.2 – 15.6 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_16ptc-g-e_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_16ptc-g-l_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_16ptc-g-nx_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_16t67-b_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_16t67p-g-e_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-g-e_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-g-l_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-g-n_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-g-x_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Show 21 more CPE
CPEVersionsRoleVendor
cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-l_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_24t67-b_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_4s-ts-g-b_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_4s-ts-g-l_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_4t-b_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_4t-g-b_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_4t-g-l_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_4t-l_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_4ts-b_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_4ts-g-b_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_4ts-g-l_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_4ts-l_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_8t67-b_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_8t67p-g-e_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-b_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-g-b_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-g-e_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-g-l_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-g-n_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-l_switch:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:industrial_ethernet_2000_series_firmware:15.2\(5.4.32i\)e2:*:*:*:*:*:*:*15.2(5.4.32i)e2Running onCisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-l_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_24t67-b_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_4s-ts-g-b_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_4s-ts-g-l_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_4t-b_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_4t-g-b_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_4t-g-l_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_4t-l_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_4ts-b_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_4ts-g-b_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_4ts-g-l_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_4ts-l_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_8t67-b_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_8t67p-g-e_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-b_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-g-b_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-g-e_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-g-l_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-g-n_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-l_switch:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:industrial_ethernet_2000_series_firmware:15.2\(5.4.32i\)e2:*:*:*:*:*:*:* Versions 15.2(5.4.32i)e2 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-2017-12235
  3. 2026-10-03 Alias added: GHSA-83w7-v79x-495q

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