CVE-2023-20266

Severity Score

7.2

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability in Cisco Emergency Responder, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), and Cisco Unity Connection could allow an authenticated, remote attacker to elevate privileges to root on an affected device.
This vulnerability exists because the application does not properly restrict the files that are being used for upgrades. An attacker could exploit this vulnerability by providing a crafted upgrade file. A successful exploit could allow the attacker to elevate privileges to root. To exploit this vulnerability, the attacker must have valid platform administrator credentials on an affected device.

Una vulnerabilidad en Cisco Emergency Responder, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME) y Cisco Unity Connection podría permitir a un atacante remoto autenticado elevar los privilegios a root en un dispositivo afectado. Esta vulnerabilidad existe porque la aplicación no restringe adecuadamente los archivos que se utilizan para las actualizaciones. Un atacante podría aprovechar esta vulnerabilidad proporcionando un archivo de actualización manipulado. Un exploit exitoso podría permitir al atacante elevar los privilegios a root. Para aprovechar esta vulnerabilidad, el atacante debe tener credenciales válidas de administrador de la plataforma en un dispositivo afectado.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-10-27 CVE Reserved
2023-08-30 CVE Published
2024-08-02 CVE Updated
2024-09-05 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-269: Improper Privilege Management
CWE-347: Improper Verification of Cryptographic Signature

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-priv-esc-D8Bky5eg	2024-01-25

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Emergency Responder Search vendor "Cisco" for product "Emergency Responder"				12.5.1su4 Search vendor "Cisco" for product "Emergency Responder" and version "12.5.1su4"		-		Affected
Cisco Search vendor "Cisco"		Emergency Responder Search vendor "Cisco" for product "Emergency Responder"				12.5.1su8a Search vendor "Cisco" for product "Emergency Responder" and version "12.5.1su8a"		-		Affected
Cisco Search vendor "Cisco"		Emergency Responder Search vendor "Cisco" for product "Emergency Responder"				14su3 Search vendor "Cisco" for product "Emergency Responder" and version "14su3"		-		Affected
Cisco Search vendor "Cisco"		Unified Communications Manager Search vendor "Cisco" for product "Unified Communications Manager"				12.5.1su8 Search vendor "Cisco" for product "Unified Communications Manager" and version "12.5.1su8"		-		Affected
Cisco Search vendor "Cisco"		Unified Communications Manager Search vendor "Cisco" for product "Unified Communications Manager"				12.5.1su8 Search vendor "Cisco" for product "Unified Communications Manager" and version "12.5.1su8"		session_management		Affected
Cisco Search vendor "Cisco"		Unity Connection Search vendor "Cisco" for product "Unity Connection"				12.5\(1\)su6 Search vendor "Cisco" for product "Unity Connection" and version "12.5\(1\)su6"		-		Affected
Cisco Search vendor "Cisco"		Unity Connection Search vendor "Cisco" for product "Unity Connection"				12.5\(1\)su7 Search vendor "Cisco" for product "Unity Connection" and version "12.5\(1\)su7"		-		Affected
Cisco Search vendor "Cisco"		Unity Connection Search vendor "Cisco" for product "Unity Connection"				12.5\(1\)su8 Search vendor "Cisco" for product "Unity Connection" and version "12.5\(1\)su8"		-		Affected
Cisco Search vendor "Cisco"		Unity Connection Search vendor "Cisco" for product "Unity Connection"				14su2 Search vendor "Cisco" for product "Unity Connection" and version "14su2"		-		Affected
Cisco Search vendor "Cisco"		Unity Connection Search vendor "Cisco" for product "Unity Connection"				14su3 Search vendor "Cisco" for product "Unity Connection" and version "14su3"		-		Affected