CVE-2018-0235: Input Validation
First published: Wed May 02 2018(Updated: )
A vulnerability in the 802.11 frame validation functionality of the Cisco Wireless LAN Controller (WLC) could allow an unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to incomplete input validation of certain 802.11 management information element frames that an affected device receives from wireless clients. An attacker could exploit this vulnerability by sending a malformed 802.11 management frame to an affected device. A successful exploit could allow the attacker to cause the affected device to reload unexpectedly, resulting in a DoS condition. This vulnerability affects only Cisco Wireless LAN Controllers that are running Cisco Mobility Express Release 8.5.103.0. Cisco Bug IDs: CSCvg07024.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Wireless LAN Controller Software | =8.6\(1.106\) | |
| Cisco Wireless LAN Controller Software | =8.6\(1.114\) |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this Cisco Wireless LAN Controller vulnerability?
The vulnerability ID for this Cisco Wireless LAN Controller vulnerability is CVE-2018-0235.
What is the severity of CVE-2018-0235?
The severity of CVE-2018-0235 is high with a CVSS score of 7.4.
How can an unauthenticated, adjacent attacker exploit this vulnerability?
An unauthenticated, adjacent attacker can exploit this vulnerability by causing an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition.
Which software versions of Cisco Wireless LAN Controller are affected by CVE-2018-0235?
The software versions 8.6(1.106) and 8.6(1.114) of Cisco Wireless LAN Controller are affected by CVE-2018-0235.
How can I fix CVE-2018-0235?
To fix CVE-2018-0235, it is recommended to upgrade to a fixed software release.
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- version/cisco wireless lan controller software/8.6\(1.106\)
- version/cisco wireless lan controller software/8.6\(1.114\)