CVE-2020-3319

Cisco Webex Network Recording Player and Cisco Webex Player Denial of Service Vulnerability

Severity Score

3.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability in Cisco Webex Network Recording Player and Cisco Webex Player for Microsoft Windows could allow an attacker to cause a process crash resulting in a Denial of service (DoS) condition for the player application on an affected system. The vulnerability exists due to insufficient validation of certain elements with a Webex recording stored in either the Advanced Recording Format (ARF) or the Webex Recording Format (WRF). An attacker could exploit this vulnerability by sending a user a malicious ARF or WRF file through a link or email attachment and persuading the user to open the file with the affected software on the local system. A successful exploit could allow the attacker to cause the Webex player application to crash when trying to view the malicious file. This vulnerability affects Cisco Webex Network Recording Player and Webex Player releases earlier than Release 3.0 MR3 Security Patch 2 and 4.0 MR3.

Una vulnerabilidad en Cisco Webex Network Recording Player y Cisco Webex Player para Microsoft Windows, podría permitir a un atacante causar un bloqueo del proceso resultando en una condición de Denegación de servicio (DoS) para la aplicación del reproductor sobre un sistema afectado. La vulnerabilidad se presenta debido a una comprobación insuficiente de determinados elementos con una grabación de Webex almacenada en el Advanced Recording Format (ARF) o en el Webex Recording Format (WRF). Un atacante podría explotar esta vulnerabilidad al enviar a un usuario un archivo ARF o WRF malicioso por medio de un enlace o archivo adjunto de correo electrónico y persuadiendo al usuario de abrir el archivo con el software afectado en el sistema local. Una explotación con éxito podría permitir a un atacante causar que la aplicación del reproductor Webex se bloquee cuando tratan de visualizar el archivo malicioso. Esta vulnerabilidad afecta a las versiones de Cisco Webex Network Recording Player y Webex Player anteriores a la versión 3.0 MR3 Security Patch 2 y 4.0 MR3.

*Credits: Cisco would like to thank Kexu Wang of Fortinet's FortiGuard Labs for reporting this vulnerability

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-12-12 CVE Reserved
2020-06-03 CVE Published
2023-03-08 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://quickview.cloudapps.cisco.com/quickview/bug/CSCvs98254	2021-09-22

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Webex Network Recording Player Search vendor "Cisco" for product "Webex Network Recording Player"				<= 3.0 Search vendor "Cisco" for product "Webex Network Recording Player" and version " <= 3.0"		windows		Affected
Cisco Search vendor "Cisco"		Webex Network Recording Player Search vendor "Cisco" for product "Webex Network Recording Player"				4.0 Search vendor "Cisco" for product "Webex Network Recording Player" and version "4.0"		windows		Affected
Cisco Search vendor "Cisco"		Webex Player Search vendor "Cisco" for product "Webex Player"				<= 3.0 Search vendor "Cisco" for product "Webex Player" and version " <= 3.0"		windows		Affected