Vulnerability Description
A vulnerability in the Forwarding Information Base (FIB) code of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, network attacker to cause a denial of service (DoS) condition. The vulnerability is due to a limitation in the way the FIB is internally representing recursive routes. An attacker could exploit this vulnerability by injecting routes into the routing protocol that have a specific recursive pattern. The attacker must be in a position on the network that provides the ability to inject a number of recursive routes with a specific pattern. An exploit could allow the attacker to cause an affected device to reload, creating a DoS condition. Cisco Bug IDs: CSCva91655.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios Xe | < 15.5\(3\)s5 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/103548Third Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
- http://www.securityfocus.com/bid/103548Third Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
FAQ
What is CVE-2018-0189?
CVE-2018-0189 is a vulnerability with a CVSS score of 5.3 (MEDIUM). A vulnerability in the Forwarding Information Base (FIB) code of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, network attacker to cause a denial of service (DoS) condit...
How severe is CVE-2018-0189?
CVE-2018-0189 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-0189?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios Xe.