Vulnerability identifier: #VU8690

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-12226

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco IOS XE
Operating systems & Components / Operating system

Vendor: Cisco Systems, Inc

Description
The vulnerability allows a remote authenticated attacker to gain elevated privileges on the target system.

The weakness exists in the web-based Wireless Controller GUI of Cisco IOS XE Software due to incomplete input validation of HTTP requests by the affected GUI, if the GUI connection state or protocol changes. A remote attacker can authenticate to the Wireless Controller GUI as a Lobby Administrator user, change the state or protocol for connection to the GUI, obtain administrator privileges and gain full control over the affected device.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Cisco IOS XE: 3.7.0E - 3.7.5E

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-ngwc

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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.