CVE-2017-3790

Severity Score

8.6

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability in the received packet parser of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) software could allow an unauthenticated, remote attacker to cause a reload of the affected system, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient size validation of user-supplied data. An attacker could exploit this vulnerability by sending crafted H.224 data in Real-Time Transport Protocol (RTP) packets in an H.323 call. An exploit could allow the attacker to overflow a buffer in a cache that belongs to the received packet parser, which will result in a crash of the application, resulting in a DoS condition. All versions of Cisco Expressway Series Software and Cisco TelePresence VCS Software prior to version X8.8.2 are vulnerable. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Cisco Bug IDs: CSCus99263.

Una vulnerabilidad en el analizador de paquetes recibidos del software Cisco Expressway Series y Cisco TelePresence Video Communication Server (VCS) podrían permitir a un atacante remoto no autenticado provocar una recarga del sistema afectado, resultando en una condición de denegación de servicio (DoS). La vulnerabilidad es debido a una validación de tamaño insuficiente de los datos suministrados por el usuario. Un atacante podría explotar esta vulnerabilidad enviando datos H.224 manipulados en paquetes de protocolo de transporte en tiempo real (RTP) en una llamada H.323. Un exploit podría permitir al atacante desbordar un búfer en un caché que pertenece al analizador de paquetes recibido, lo que resultará en una caída de la aplicación, resultando en una condición DoS. Todas las versiones de Cisco Expressway Series Software y Cisco TelePresence VCS Software anteriores a la versión X8.8.2 son vulnerables. Cisco ha lanzado actualizaciones de software que abordan esta vulnerabilidad. No existen soluciones provisionales que aborden esta vulnerabilidad. ID de errores de Cisco: CSCus99263.

*Credits: N/A

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

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-12-21 CVE Reserved
2017-02-01 CVE Published
2023-03-07 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-399: Resource Management Errors

CAPEC

References (3)

URL	Tag	Source
http://www.securityfocus.com/bid/95786	Third Party Advisory
http://www.securitytracker.com/id/1037697	Vdb Entry

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170125-expressway	2019-10-03

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"				x8.1.0 Search vendor "Cisco" for product "Expressway" and version "x8.1.0"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.1.1 Search vendor "Cisco" for product "Expressway" and version "x8.1.1"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.1.2 Search vendor "Cisco" for product "Expressway" and version "x8.1.2"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.1_base Search vendor "Cisco" for product "Expressway" and version "x8.1_base"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.2.1 Search vendor "Cisco" for product "Expressway" and version "x8.2.1"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.2.2 Search vendor "Cisco" for product "Expressway" and version "x8.2.2"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.2_base Search vendor "Cisco" for product "Expressway" and version "x8.2_base"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.5 Search vendor "Cisco" for product "Expressway" and version "x8.5"		rc4		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.5.0 Search vendor "Cisco" for product "Expressway" and version "x8.5.0"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.5.1 Search vendor "Cisco" for product "Expressway" and version "x8.5.1"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.5.2 Search vendor "Cisco" for product "Expressway" and version "x8.5.2"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.5.3 Search vendor "Cisco" for product "Expressway" and version "x8.5.3"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.5_base Search vendor "Cisco" for product "Expressway" and version "x8.5_base"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.6.0 Search vendor "Cisco" for product "Expressway" and version "x8.6.0"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.6.1 Search vendor "Cisco" for product "Expressway" and version "x8.6.1"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.7.0 Search vendor "Cisco" for product "Expressway" and version "x8.7.0"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.7.1 Search vendor "Cisco" for product "Expressway" and version "x8.7.1"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.7.2 Search vendor "Cisco" for product "Expressway" and version "x8.7.2"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.7.3 Search vendor "Cisco" for product "Expressway" and version "x8.7.3"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.8.0 Search vendor "Cisco" for product "Expressway" and version "x8.8.0"		-		Affected
Cisco Search vendor "Cisco"		Expressway Search vendor "Cisco" for product "Expressway"				x8.8.1 Search vendor "Cisco" for product "Expressway" and version "x8.8.1"		-		Affected
Cisco Search vendor "Cisco"		Telepresence Video Communication Server Search vendor "Cisco" for product "Telepresence Video Communication Server"				x5.2_base Search vendor "Cisco" for product "Telepresence Video Communication Server" and version "x5.2_base"		-		Affected
Cisco Search vendor "Cisco"		Telepresence Video Communication Server Search vendor "Cisco" for product "Telepresence Video Communication Server"				x6.0_base Search vendor "Cisco" for product "Telepresence Video Communication Server" and version "x6.0_base"		-		Affected
Cisco Search vendor "Cisco"		Telepresence Video Communication Server Search vendor "Cisco" for product "Telepresence Video Communication Server"				x6.1_base Search vendor "Cisco" for product "Telepresence Video Communication Server" and version "x6.1_base"		-		Affected
Cisco Search vendor "Cisco"		Telepresence Video Communication Server Search vendor "Cisco" for product "Telepresence Video Communication Server"				x7.0.0 Search vendor "Cisco" for product "Telepresence Video Communication Server" and version "x7.0.0"		-		Affected
Cisco Search vendor "Cisco"		Telepresence Video Communication Server Search vendor "Cisco" for product "Telepresence Video Communication Server"				x7.0.1 Search vendor "Cisco" for product "Telepresence Video Communication Server" and version "x7.0.1"		-		Affected
Cisco Search vendor "Cisco"		Telepresence Video Communication Server Search vendor "Cisco" for product "Telepresence Video Communication Server"				x7.0.2 Search vendor "Cisco" for product "Telepresence Video Communication Server" and version "x7.0.2"		-		Affected
Cisco Search vendor "Cisco"		Telepresence Video Communication Server Search vendor "Cisco" for product "Telepresence Video Communication Server"				x7.0.3 Search vendor "Cisco" for product "Telepresence Video Communication Server" and version "x7.0.3"		-		Affected
Cisco Search vendor "Cisco"		Telepresence Video Communication Server Search vendor "Cisco" for product "Telepresence Video Communication Server"				x7.1_base Search vendor "Cisco" for product "Telepresence Video Communication Server" and version "x7.1_base"		-		Affected
Cisco Search vendor "Cisco"		Telepresence Video Communication Server Search vendor "Cisco" for product "Telepresence Video Communication Server"				x7.2.0 Search vendor "Cisco" for product "Telepresence Video Communication Server" and version "x7.2.0"		-		Affected
Cisco Search vendor "Cisco"		Telepresence Video Communication Server Search vendor "Cisco" for product "Telepresence Video Communication Server"				x7.2.1 Search vendor "Cisco" for product "Telepresence Video Communication Server" and version "x7.2.1"		-		Affected
Cisco Search vendor "Cisco"		Telepresence Video Communication Server Search vendor "Cisco" for product "Telepresence Video Communication Server"				x7.2.2 Search vendor "Cisco" for product "Telepresence Video Communication Server" and version "x7.2.2"		-		Affected