#VU8690 Privilege escalation in Cisco IOS XE - CVE-2017-12226
Published: October 4, 2017
Vulnerability identifier: #VU8690
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2017-12226
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Cisco IOS XE
Cisco IOS XE
Software vendor:
Cisco Systems, Inc
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.
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.
Remediation
Install update from vendor's website.