Improper input validation in Cisco Industrial Ethernet 2000 16ptc-G-E Switch
CVE-2017-12235
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.071 (93.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Cisco Industrial_ethernet_2000_16ptc-g-e_switch
- Cisco Industrial_ethernet_2000_16ptc-g-l_switch
- Cisco Industrial_ethernet_2000_16ptc-g-nx_switch
- Cisco Industrial_ethernet_2000_16t67-b_switch
- Cisco Industrial_ethernet_2000_16t67p-g-e_switch
- Cisco Industrial_ethernet_2000_16tc-g-e_switch
- Cisco Industrial_ethernet_2000_16tc-g-l_switch
- Cisco Industrial_ethernet_2000_16tc-g-n_switch
- Cisco Industrial_ethernet_2000_16tc-g-x_switch
- Cisco Industrial_ethernet_2000_16tc-l_switch
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, Broken Link, x_refsource_BID)
- psirt@cisco.com (x_refsource_CONFIRM, Vendor Advisory)
- psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK, Broken Link)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2017-12235?
- CVE-2017-12235 is a high-severity vulnerability in Cisco Industrial Ethernet 2000 16ptc-G-E Switch, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2017-09-29.
- How severe is CVE-2017-12235?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-12235 known to be exploited?
- Yes. CVE-2017-12235 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.