CVE-2022-20813

Cisco Expressway Series and Cisco TelePresence Video Communication Server Vulnerabilities

Severity Score

5.9

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track*

*SSVC

Descriptions

Multiple vulnerabilities in the API and in the web-based management interface of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow a remote attacker to overwrite arbitrary files or conduct null byte poisoning attacks on an affected device. Note: Cisco Expressway Series refers to the Expressway Control (Expressway-C) device and the Expressway Edge (Expressway-E) device. For more information about these vulnerabilities, see the Details section of this advisory.

Múltiples vulnerabilidades en la API y en la interfaz de administración basada en web de la serie Expressway de Cisco y del servidor de comunicaciones de vídeo (VCS) de Cisco TelePresence podrían permitir a un atacante remoto sobrescribir archivos arbitrarios o conducir ataques de envenenamiento de bytes nulos en un dispositivo afectado. Nota: La serie Cisco Expressway hace referencia al dispositivo Expressway Control (Expressway-C) y al dispositivo Expressway Edge (Expressway-E). Para más información sobre estas vulnerabilidades, consulte la sección Detalles de este aviso

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

Low

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track*

Exploitation

None

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2021-11-02 CVE Reserved
2022-07-06 CVE Published
2024-09-27 EPSS Updated
2024-11-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-158: Improper Neutralization of Null Byte or NUL Character
CWE-295: Improper Certificate Validation

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-expressway-overwrite-3buqW8LH	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				< x14.0.7 Search vendor "Cisco" for product "Expressway" and version " < x14.0.7"		-		Affected
Cisco Search vendor "Cisco"		Telepresence Video Communication Server Search vendor "Cisco" for product "Telepresence Video Communication Server"				< x14.0.7 Search vendor "Cisco" for product "Telepresence Video Communication Server" and version " < x14.0.7"		-		Affected