Vulnerability Description
A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software performs incomplete input validation of option 82 information that it receives in DHCP Version 4 (DHCPv4) packets from DHCP relay agents. An attacker could exploit this vulnerability by sending a crafted DHCPv4 packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCuh91645.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios | 12.2\(33\)sre7a |
| Cisco | Ios Xe | 12.2\(33\)sre7a |
| Cisco | 7600 Series Route Switch Processor 720 | - |
| Cisco | 7600 Series Supervisor Engine 32 | - |
| Cisco | 7600 Series Supervisor Engine 720 | - |
| Rockwellautomation | Allen-Bradley Stratix 8300 | - |
| Rockwellautomation | Allen-Bradley Armorstratix 5700 | - |
| Rockwellautomation | Allen-Bradley Stratix 5400 | - |
| Rockwellautomation | Allen-Bradley Stratix 5410 | - |
| Rockwellautomation | Allen-Bradley Stratix 5700 | - |
| Rockwellautomation | Allen-Bradley Stratix 8000 | - |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/103554Broken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040591Broken LinkThird Party AdvisoryVDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04Third Party AdvisoryUS Government Resource
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05Third Party AdvisoryUS Government Resource
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
- https://www.tenable.com/security/research/tra-2018-06Third Party Advisory
- http://www.securityfocus.com/bid/103554Broken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040591Broken LinkThird Party AdvisoryVDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04Third Party AdvisoryUS Government Resource
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05Third Party AdvisoryUS Government Resource
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
- https://www.tenable.com/security/research/tra-2018-06Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-US Government Resource
FAQ
What is CVE-2018-0174?
CVE-2018-0174 is a vulnerability with a CVSS score of 8.6 (HIGH). A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload,...
How severe is CVE-2018-0174?
CVE-2018-0174 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-0174?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios, Cisco Ios Xe, Cisco 7600 Series Route Switch Processor 720, Cisco 7600 Series Supervisor Engine 32, Cisco 7600 Series Supervisor Engine 720.