Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios | >= 12.2, <= 15.6 |
| 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 | - |
| Cisco | Industrial Ethernet 2000 24T67-B Switch | - |
| Cisco | Industrial Ethernet 2000 4S-Ts-G-B Switch | - |
| Cisco | Industrial Ethernet 2000 4S-Ts-G-L Switch | - |
| Cisco | Industrial Ethernet 2000 4T-B Switch | - |
| Cisco | Industrial Ethernet 2000 4T-G-B Switch | - |
| Cisco | Industrial Ethernet 2000 4T-G-L Switch | - |
| Cisco | Industrial Ethernet 2000 4T-L Switch | - |
| Cisco | Industrial Ethernet 2000 4Ts-B Switch | - |
| Cisco | Industrial Ethernet 2000 4Ts-G-B Switch | - |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/101043Broken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039451Broken LinkThird Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
- http://www.securityfocus.com/bid/101043Broken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039451Broken LinkThird Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-US Government Resource
FAQ
What is CVE-2017-12235?
CVE-2017-12235 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...
How severe is CVE-2017-12235?
CVE-2017-12235 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-12235?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios, 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.