CVE-2018-0174: Cisco IOS Software and Cisco IOS XE Software Improper Input Validation Vulnerability
First published: Wed Mar 28 2018(Updated: )
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.
Credit: ykramarz@cisco.com ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS XE Software | ||
| 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 Armorstratix 5700 | ||
| Rockwellautomation Allen-bradley Stratix 5400 | ||
| Rockwellautomation Allen-bradley Stratix 5410 | ||
| Rockwellautomation Allen-bradley Stratix 5700 | ||
| Rockwellautomation Allen-bradley Stratix 8000 | ||
| Rockwellautomation Allen-bradley Stratix 8300 | ||
| All of | ||
| Any of | ||
| Cisco IOS | =12.2\(33\)sre7a | |
| Cisco IOS XE | =12.2\(33\)sre7a | |
| Any of | ||
| Cisco 7600 Series Route Switch Processor 720 | ||
| Cisco 7600 Series Supervisor Engine 32 | ||
| Cisco 7600 Series Supervisor Engine 720 | ||
| All of | ||
| Any of | ||
| Cisco IOS | <=15.2\(4a\)ea5 | |
| Cisco IOS XE | <=15.2\(4a\)ea5 | |
| Rockwellautomation Allen-bradley Stratix 8300 | ||
| All of | ||
| Any of | ||
| Cisco IOS | <=15.2\(6\)e0a | |
| Cisco IOS XE | <=15.2\(6\)e0a | |
| Any of | ||
| 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 |
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Reference Links
- http://www.securityfocus.com/bid/103554
- http://www.securitytracker.com/id/1040591
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr3
- https://www.tenable.com/security/research/tra-2018-06
- https://nvd.nist.gov/vuln/detail/CVE-2018-0174
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2018-0174.
What is the severity of CVE-2018-0174?
The severity of CVE-2018-0174 is high with a CVSS score of 8.6.
What software is affected by CVE-2018-0174?
Cisco IOS Software and Cisco IOS XE Software versions 12.2(33)sre7a are affected by CVE-2018-0174.
How does CVE-2018-0174 impact affected devices?
CVE-2018-0174 could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition.
Are there any references available for more information about CVE-2018-0174?
Yes, here are some references for more information about CVE-2018-0174: [1] [2] [3].
- agent/type
- agent/description
- agent/title
- agent/weakness
- agent/author
- agent/severity
- collector/nvd-index
- agent/software-canonical-lookup-request
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/first-publish-date
- agent/event
- exploited/true
- collector/cisa-known-exploited
- source/CISA
- agent/references
- agent/tags
- collector/nvd-cve
- vendor/cisco
- canonical/cisco ios
- version/cisco ios/12.2\(33\)sre7a
- canonical/cisco ios xe
- version/cisco ios xe/12.2\(33\)sre7a
- canonical/cisco 7600 series route switch processor 720
- canonical/cisco 7600 series supervisor engine 32
- canonical/cisco 7600 series supervisor engine 720
- vendor/rockwellautomation
- canonical/rockwellautomation allen-bradley armorstratix 5700
- canonical/rockwellautomation allen-bradley stratix 5400
- canonical/rockwellautomation allen-bradley stratix 5410
- canonical/rockwellautomation allen-bradley stratix 5700
- canonical/rockwellautomation allen-bradley stratix 8000
- canonical/rockwellautomation allen-bradley stratix 8300
- version/cisco ios/15.2\(4a\)ea5
- version/cisco ios xe/15.2\(4a\)ea5
- version/cisco ios/15.2\(6\)e0a
- version/cisco ios xe/15.2\(6\)e0a
- canonical/cisco ios xe software