// For flags

CVE-2019-1720

Cisco Expressway Series and Cisco TelePresence Video Communication Server Denial of Service Vulnerability

Severity Score

4.9
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability in the XML API of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an authenticated, remote attacker to cause the CPU to increase to 100% utilization, causing a denial of service (DoS) condition on an affected system. The vulnerability is due to improper handling of the XML input. An attacker could exploit this vulnerability by sending a specifically crafted XML payload. A successful exploit could allow the attacker to exhaust CPU resources, resulting in a DoS condition until the system is manually rebooted. Software versions prior to X12.5.1 are affected.

Una vulnerabilidad en la API XML de Expressway Series y Cisco TelePresence Video Communication Server (VCS) de Cisco podría permitir que un atacante remoto identificado haga que la CPU aumente al 100% de la utilización, causando una condición de denegación de servicio (DoS) en un sistema afectado. La vulnerabilidad se debe a un manejo inapropiado de la entrada XML. Un atacante podría aprovechar esta vulnerabilidad enviando una carga de XML específicamente creada. Una operación con éxito podría permitirle al atacante agotar los recursos de la CPU, resultando en una condición DoS hasta que el sistema sea reiniciado manualmente. Las versiones del programa anteriores a X12.5.1 están afectadas.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-12-06 CVE Reserved
  • 2019-04-18 CVE Published
  • 2023-03-07 EPSS Updated
  • 2024-09-17 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Cisco
Search vendor "Cisco"
 Telepresence Video Communication Server
Search vendor "Cisco" for product "Telepresence Video Communication Server"
 < x12.5.1
Search vendor "Cisco" for product "Telepresence Video Communication Server" and version " < x12.5.1"
-
Affected