// For flags

CVE-2019-1957

Cisco IoT Field Network Director TLS Renegotiation Denial of Service Vulnerability

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

A vulnerability in the web interface of Cisco IoT Field Network Director could allow an unauthenticated, remote attacker to trigger high CPU usage, resulting in a denial of service (DoS) condition on an affected device. The vulnerability is due to improper handling of Transport Layer Security (TLS) renegotiation requests. An attacker could exploit this vulnerability by sending renegotiation requests at a high rate. A successful exploit could increase the resource usage on the system, eventually leading to a DoS condition.

Una vulnerabilidad en la interfaz web de IoT Field Network Director de Cisco, podría permitir a un atacante remoto no autenticado desencadenar un uso elevado de la CPU, resultando en una condición de una denegación de servicio (DoS) en un dispositivo afectado. La vulnerabilidad es debido al manejo inapropiado de las peticiones de renegociación de Transport Layer Security (TLS). Un atacante podría explotar esta vulnerabilidad enviando peticiones de renegociación a un ritmo elevado. Una explotación con éxito podría aumentar el uso de recursos en el sistema, eventualmente conllevando a una condición DoS.

*Credits: N/A
CVSS Scores
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
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* 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
  • 2019-08-08 CVE Published
  • 2023-03-07 EPSS Updated
  • 2024-11-19 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-399: Resource Management Errors
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"
 Iot Field Network Director
Search vendor "Cisco" for product "Iot Field Network Director"
 < 4.4.2-11
Search vendor "Cisco" for product "Iot Field Network Director" and version " < 4.4.2-11"
-
Affected