Vulnerability identifier: #VU81286

Vulnerability risk: Medium

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-2023-20231

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco IOS XE
Operating systems & Components / Operating system
Catalyst 9300 Series Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 9400 Series Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 9500 Series Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 9800-CL Wireless Controllers for Cloud
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 9800 Embedded Wireless Controller
Hardware solutions / Routers & switches, VoIP, GSM, etc
Embedded Wireless Controller on Catalyst 9100X Series Access Points
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the web UI. A remote user can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco IOS XE: 16.12.4 - 17.10.1b

Catalyst 9300 Series Switches: All versions

Catalyst 9400 Series Switches: All versions

Catalyst 9500 Series Switches: All versions

Catalyst 9800-CL Wireless Controllers for Cloud: All versions

Catalyst 9800 Embedded Wireless Controller: All versions

Embedded Wireless Controller on Catalyst 9100X Series Access Points: All versions

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External links
http://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webui-cmdij-FzZAeXAy

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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.