CVE-2018-0257
First published: Thu Apr 19 2018(Updated: )
A vulnerability in Cisco IOS XE Software running on Cisco cBR Series Converged Broadband Routers could allow an unauthenticated, adjacent attacker to cause high CPU usage on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to the incorrect handling of certain DHCP packets. An attacker could exploit this vulnerability by sending certain DHCP packets to a specific segment of an affected device. A successful exploit could allow the attacker to increase CPU usage on the affected device and cause a DoS condition. Cisco Bug IDs: CSCvg73687.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS XE Web UI | >=3.18<=3.18.4 | |
| Cisco IOS XE Web UI | >=16.6<=16.6.3 | |
| Cisco IOS XE Web UI | >16.7<=16.7.2 | |
| Cisco IOS XE Web UI | =15.6\(2\)sp | |
| Cisco IOS XE Web UI | =16.4 | |
| Cisco IOS XE Web UI | =16.5 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2018-0257?
CVE-2018-0257 is classified as a high severity vulnerability due to its potential to cause a denial of service condition.
How do I fix CVE-2018-0257?
To mitigate CVE-2018-0257, update the Cisco IOS XE Software to the latest version that addresses this vulnerability.
Who is affected by CVE-2018-0257?
CVE-2018-0257 affects Cisco cBR Series Converged Broadband Routers running specific versions of Cisco IOS XE Software.
What is the impact of CVE-2018-0257?
The impact of CVE-2018-0257 is that it could allow an unauthenticated, adjacent attacker to cause high CPU usage on the affected device.
When was CVE-2018-0257 disclosed?
CVE-2018-0257 was disclosed on April 18, 2018.
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