CVE-2019-1887

Cisco Unified Communications Manager Session Initiation Protocol Denial of Service Vulnerability

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability in the Session Initiation Protocol (SIP) protocol implementation of Cisco Unified Communications Manager could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient validation of input SIP traffic. An attacker could exploit this vulnerability by sending a malformed SIP packet to an affected Cisco Unified Communications Manager. A successful exploit could allow the attacker to trigger a new registration process on all connected phones, temporarily disrupting service.

Una vulnerabilidad en la implementación del protocolo Session Initiation Protocol (SIP) del programa Cisco Unified Communications Manager, podría permitir a un atacante remoto no identificado causar una condición de denegación de servicio (DoS). La vulnerabilidad es debido a una comprobación insuficiente del tráfico de entrada bajo protocolo SIP. Un atacante podría aprovechar esta vulnerabilidad mediante el envío de un paquete SIP malformado hacia un programa Cisco Unified Communications Manager afectado. Una operación con éxito podría permitir al atacante activar un nuevo proceso de registro en todos los teléfonos conectados, interrumpiendo el servicio temporalmente.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-12-06 CVE Reserved
2019-07-06 CVE Published
2023-03-07 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-787: Out-of-bounds Write

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-cucm-dos	2019-10-09

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Unified Communications Manager Search vendor "Cisco" for product "Unified Communications Manager"				10.5\(2.10000.5\) Search vendor "Cisco" for product "Unified Communications Manager" and version "10.5\(2.10000.5\)"		-		Affected
Cisco Search vendor "Cisco"		Unified Communications Manager Search vendor "Cisco" for product "Unified Communications Manager"				11.5\(1.10000.6\) Search vendor "Cisco" for product "Unified Communications Manager" and version "11.5\(1.10000.6\)"		-		Affected
Cisco Search vendor "Cisco"		Unified Communications Manager Search vendor "Cisco" for product "Unified Communications Manager"				12.0\(1.10000.10\) Search vendor "Cisco" for product "Unified Communications Manager" and version "12.0\(1.10000.10\)"		-		Affected
Cisco Search vendor "Cisco"		Unified Communications Manager Search vendor "Cisco" for product "Unified Communications Manager"				12.5\(1.10000.22\) Search vendor "Cisco" for product "Unified Communications Manager" and version "12.5\(1.10000.22\)"		-		Affected