Vulnerability identifier: #VU62340

Vulnerability risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-20695

CWE-ID: CWE-303

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Wireless LAN Controller Software
Other software / Other software solutions
Virtual Wireless Controller
Other software / Other software solutions
3504 Wireless Controller
Hardware solutions / Routers & switches, VoIP, GSM, etc
5520 Wireless Controller
Hardware solutions / Routers & switches, VoIP, GSM, etc
8540 Wireless Controller
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Mobility Express
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to the improper implementation of the password validation algorithm in the authentication functionality. A remote attacker can bypass authentication and log in to the device as an administrator.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Wireless LAN Controller Software: 8.10.151.0 - 8.10.162.0

3504 Wireless Controller: All versions

5520 Wireless Controller : All versions

8540 Wireless Controller : All versions

Cisco Mobility Express: All versions

Virtual Wireless Controller: All versions

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wlc-auth-bypass-JRNhV4fF

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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