Input validation error in Cisco Systems, Inc products - CVE-2023-20226

Vulnerability identifier: #VU81288

CSH Severity: High

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-20226

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in Application Quality of Experience (AppQoE) and Unified Threat Defense (UTD). A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

4200 Series Integrated Services Routers
4300 Series Integrated Services Routers
Catalyst 8000V Edge Software
Catalyst 8200 Series Edge Platforms
Catalyst 8300 Series Edge Platforms
Catalyst 8500L Series Edge Platforms
ISR1100 Series Routers
Catalyst IR8300 Rugged Series Router
Cisco IOS XE

Install update from vendor's website.

Cisco IOS XE - addressed in versions 17.9.3, 17.9.3a, 17.9.4, 17.11.1, 17.11.1a, 17.12.1, 17.12.1a

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-appqoe-utd-dos-p8O57p5y

• Denial of service in Cisco IOS XE Software