// For flags

CVE-2019-1747

Cisco IOS and IOS XE Software Short Message Service Denial of Service Vulnerability

Severity Score

8.6
*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 implementation of the Short Message Service (SMS) handling functionality of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition on an affected device. The vulnerability is due to improper processing of SMS protocol data units (PDUs) that are encoded with a special character set. An attacker could exploit this vulnerability by sending a malicious SMS message to an affected device. A successful exploit could allow the attacker to cause the wireless WAN (WWAN) cellular interface module on an affected device to crash, resulting in a DoS condition that would require manual intervention to restore normal operating conditions.

Una vulnerabilidad en la implementación de la funcionalidad de manejo de SMS (Short Message Service) del software Cisco IOS y Cisco IOS XE podría permitir que un atacante remoto no autenticado cree una condición de denegación de servicio (DoS) en un dispositivo afectado. La vulnerabilidad se debe al procesado incorrecto de las unidades de datos de protocolo (PDU) de SMS que se codifican con un conjunto de caracteres especial. Un atacante podría explotar esta vulnerabilidad enviando un mensaje SMS manipulado a un dispositivo afectado. Su explotación con éxito podría permitir que el atacante provoque que el módulo de la interfaz del celular de WAN inalámbrica (WWAN) en un dispositivo afectado se cierre inesperadamente, lo que resulta en una DoS que requeriría una intervención manual para restaurar las condiciones de operación normales.

*Credits: N/A
CVSS Scores
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
Partial
* 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
  • 2019-03-27 CVE Published
  • 2024-08-17 EPSS Updated
  • 2024-11-19 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"
 Ios
Search vendor "Cisco" for product "Ios"
 15.8\(3\)m
Search vendor "Cisco" for product "Ios" and version "15.8\(3\)m"
-
Affected
Cisco
Search vendor "Cisco"
 Ios Xe
Search vendor "Cisco" for product "Ios Xe"
 16.10.1
Search vendor "Cisco" for product "Ios Xe" and version "16.10.1"
-
Affected