// For flags

CVE-2019-1669

Cisco Firepower Threat Defense Software Packet Inspection and Enforcement Bypass Vulnerability

Severity Score

8.6
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability in the data acquisition (DAQ) component of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured access control policies or cause a denial of service (DoS) condition. The vulnerability exists because the affected software improperly manages system memory resources when inspecting traffic. An attacker could exploit this vulnerability by generating specific traffic patterns for the software to inspect. A successful exploit could allow the attacker to exhaust system memory resources used for traffic inspection. Depending on the configuration, the FTD Software could fail open and cease to inspect traffic or fail closed and result in a DoS condition. This vulnerability may require manual intervention to restore the software.

Una vulnerabilidad en el componente de adquisición de datos (DAQ) de Cisco Firepower Threat Defense (FTD) Software podría permitir a un atacante remoto no autenticado omitir las políticas de control de acceso configuradas o provocar una condición de denegación de servicio (DoS). Esta vulnerabilidad existe porque el software afectado gestiona incorrectamente los recursos de la memoria del sistema al inspeccionar tráfico. Un atacante podría explotar esta vulnerabilidad generando patrones de tráfico específicos para que el software los inspeccione. Su explotación con éxito podría permitir al atacante agotar los recursos de la memoria del sistema que se utilizan para inspecciones de tráfico. Dependiendo de la configuración, el software FTD podría "fail open" y dejar de inspeccionar tráfico o "fail closed" y resultar en una condición DoS. Esta vulnerabilidad podría requerir intervención manual para recuperar el software.

*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
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-12-06 CVE Reserved
  • 2019-01-24 CVE Published
  • 2023-03-07 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-693: Protection Mechanism Failure
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"
 Firepower Threat Defense
Search vendor "Cisco" for product "Firepower Threat Defense"
 6.3.0
Search vendor "Cisco" for product "Firepower Threat Defense" and version "6.3.0"
-
Affected
Cisco
Search vendor "Cisco"
 Firepower Threat Defense
Search vendor "Cisco" for product "Firepower Threat Defense"
 6.4.0
Search vendor "Cisco" for product "Firepower Threat Defense" and version "6.4.0"
-
Affected