Input validation error in Cisco Systems, Inc products - CVE-2023-20259

Vulnerability identifier: #VU81671

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-2023-20259

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 improper API authentication and incomplete validation of the API request. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Cisco Unity Connection
Cisco Unified Communications Manager IM & Presence Service
Cisco Unified Communications Manager Session Management Edition
Cisco Unified Communications Manager
Cisco Prime Collaboration Deployment
Cisco Emergency Responder

Install updates from vendor's website.

Cisco Unity Connection - addressed in versions CUC.014.000(001.14900.006), CUC.015.000(000.96710.005), CUC.015.000(000.97100.054)
Cisco Unified Communications Manager IM & Presence Service - update to 12.5(1)SU8
Cisco Unified Communications Manager Session Management Edition - update to 12.5(1)SU8
Cisco Unified Communications Manager - update to 12.5(1)SU8
Cisco Emergency Responder - addressed in versions 012.005(001.27900.003), 014.000(001.14900.004)

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-apidos-PGsDcdNF

• Denial of service in Cisco Unified Communications Products