CVE-2019-1763

Cisco IP Phone 8800 Series Authorization Bypass Vulnerability

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

A vulnerability in the web-based management interface of Session Initiation Protocol (SIP) Software for Cisco IP Phone 8800 Series could allow an unauthenticated, remote attacker to bypass authorization, access critical services, and cause a denial of service (DoS) condition. The vulnerability exists because the software fails to sanitize URLs before it handles requests. An attacker could exploit this vulnerability by submitting a crafted URL. A successful exploit could allow the attacker to gain unauthorized access to critical services and cause a DoS condition. This vulnerability affects Cisco IP Phone 8800 Series products running a SIP Software release prior to 11.0(5) for Wireless IP Phone 8821 and 8821-EX; and 12.5(1)SR1 for the IP Conference Phone 8832 and the rest of the IP Phone 8800 Series. Cisco IP Conference Phone 8831 is not affected.

Una vulnerabilidad en la interfaz de gestión web de Session Initiation Protocol (SIP) en los teléfonos Cisco IP 8800 Series podría permitir que un atacante remoto sin autenticar omita la autorización, acceda a servicios críticos y provoque una condición de denegación de servicio (DoS). La vulnerabilidad existe debido a que el software no sanea las URL antes de manejar las peticiones. Un atacante podría explotar esta vulnerabilidad enviando una URL manipulada. Su explotación con éxito podría permitir que el atacante obtenga acceso a servicios críticos y provoque una denegación de servicio (DoS). La vulnerabilidad afecta a los productos Cisco IP Phone 8800 Series que ejecutan una versión de software SIP anterior a la 11.0(5) para Wireless IP Phone 8821 y 8821-EX; y 12.5(1)SR1 para IP Conference Phone 8832 y el resto de IP Phone 8800 Series. Cisco IP Conference Phone 8831 no se ha visto afectado.

*Credits: N/A

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

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2018-12-06 CVE Reserved
2019-03-22 CVE Published
2023-03-07 EPSS Updated
2024-11-19 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-284: Improper Access Control

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190320-ipab	2020-10-08

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"	Ip Phone 8821 Firmware Search vendor "Cisco" for product "Ip Phone 8821 Firmware"	< 11.0\(5\) Search vendor "Cisco" for product "Ip Phone 8821 Firmware" and version " < 11.0\(5\)"	-	Affected	in	Cisco Search vendor "Cisco"	Ip Phone 8821 Search vendor "Cisco" for product "Ip Phone 8821"	-	-	Safe
Cisco Search vendor "Cisco"	Ip Phone 8821-ex Firmware Search vendor "Cisco" for product "Ip Phone 8821-ex Firmware"	< 11.0\(5\) Search vendor "Cisco" for product "Ip Phone 8821-ex Firmware" and version " < 11.0\(5\)"	-	Affected	in	Cisco Search vendor "Cisco"	Ip Phone 8821-ex Search vendor "Cisco" for product "Ip Phone 8821-ex"	-	-	Safe
Cisco Search vendor "Cisco"	Ip Conference Phone 8832 Firmware Search vendor "Cisco" for product "Ip Conference Phone 8832 Firmware"	< 12.5\(1\)sr1 Search vendor "Cisco" for product "Ip Conference Phone 8832 Firmware" and version " < 12.5\(1\)sr1"	-	Affected	in	Cisco Search vendor "Cisco"	Ip Conference Phone 8832 Search vendor "Cisco" for product "Ip Conference Phone 8832"	-	-	Safe
Cisco Search vendor "Cisco"	Ip Phone 8800 Firmware Search vendor "Cisco" for product "Ip Phone 8800 Firmware"	< 12.5\(1\)sr1 Search vendor "Cisco" for product "Ip Phone 8800 Firmware" and version " < 12.5\(1\)sr1"	-	Affected	in	Cisco Search vendor "Cisco"	Ip Phone 8800 Search vendor "Cisco" for product "Ip Phone 8800"	-	-	Safe