Vulnerability identifier: #VU9090

Vulnerability risk: Low

CVSSv3.1: 4 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:U/RC:C]

CVE-ID: CVE-2017-12282

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco Wireless LAN Controller
Hardware solutions / Firmware

Vendor: Cisco Systems, Inc

Description
The vulnerability allows an Layer 2 RF-adjacent attacker to cause DoS condition on the target system.

The weakness exists in the Access Network Query Protocol (ANQP) ingress frame processing functionality of Cisco Wireless LAN Controllers due to incomplete input validation of of ANQP query frames. An remote attacker can send a malformed ANQP query frame that is on an RF-adjacent network and cause the device to restart.

Successful exploitation of the vulnerability results in denial of service.

Mitigation
Cubersecurity Help is currently unaware of any solutions addressing the vulnerability.

Vulnerable software versions

Cisco Wireless LAN Controller: 8.0.140.0 - 8.2.121.11

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171101-wlc4

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.