// For flags

CVE-2019-1980

Cisco Firepower Threat Defense Software Nonstandard Protocol Detection Bypass Vulnerability

Severity Score

5.3
*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 protocol detection component of Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software could allow an unauthenticated, remote attacker to bypass filtering protections. The vulnerability is due to improper detection of the initial use of a protocol on a nonstandard port. An attacker could exploit this vulnerability by sending traffic on a nonstandard port for the protocol in use through an affected device. An exploit could allow the attacker to bypass filtering and deliver malicious requests to protected systems that would otherwise be blocked. Once the initial protocol flow on the nonstandard port is detected, future flows on the nonstandard port will be successfully detected and handled as configured by the applied policy.

Una vulnerabilidad en el componente de detección de protocolo del software Cisco Firepower Threat Defense, el software Cisco FirePOWER Services para ASA y el software Cisco Firepower Management Center, podría permitir a un atacante remoto no autenticado omitir las protecciones de filtrado. La vulnerabilidad es debido a la detección inapropiada del uso inicial de un protocolo en un puerto no estándar. Un atacante podría explotar esta vulnerabilidad mediante el envío de tráfico sobre un puerto no estándar para el protocolo en uso por medio de un dispositivo afectado. Una explotación podría permitir al atacante omitir el filtrado y entregar peticiones maliciosas hacia los sistemas protegidos que de otra manera se bloquearían. Una vez que se detecta el flujo de protocolo inicial sobre el puerto no estándar, los flujos futuros sobre el puerto no estándar serán detectados con éxito y manejados según lo configurado mediante la política aplicada.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* 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
  • 2019-11-05 CVE Published
  • 2023-03-07 EPSS Updated
  • 2024-11-19 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-264: Permissions, Privileges, and Access Controls
  • CWE-287: Improper Authentication
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 Management Center
Search vendor "Cisco" for product "Firepower Management Center"
>= 2.9.12 <= 2.9.12.15
Search vendor "Cisco" for product "Firepower Management Center" and version " >= 2.9.12 <= 2.9.12.15"
-
Affected
Cisco
Search vendor "Cisco"
Firepower Management Center
Search vendor "Cisco" for product "Firepower Management Center"
>= 2.9.13 <= 2.9.13.6
Search vendor "Cisco" for product "Firepower Management Center" and version " >= 2.9.13 <= 2.9.13.6"
-
Affected
Cisco
Search vendor "Cisco"
Firepower Management Center
Search vendor "Cisco" for product "Firepower Management Center"
>= 2.9.14.0 <= 2.9.14.5
Search vendor "Cisco" for product "Firepower Management Center" and version " >= 2.9.14.0 <= 2.9.14.5"
-
Affected
Cisco
Search vendor "Cisco"
Firepower Management Center
Search vendor "Cisco" for product "Firepower Management Center"
2.9.15
Search vendor "Cisco" for product "Firepower Management Center" and version "2.9.15"
-
Affected
Cisco
Search vendor "Cisco"
Firepower Management Center
Search vendor "Cisco" for product "Firepower Management Center"
2.9.16
Search vendor "Cisco" for product "Firepower Management Center" and version "2.9.16"
-
Affected
Cisco
Search vendor "Cisco"
Firepower Services Software For Asa
Search vendor "Cisco" for product "Firepower Services Software For Asa"
*-
Affected
Cisco
Search vendor "Cisco"
Firepower Threat Defense
Search vendor "Cisco" for product "Firepower Threat Defense"
*-
Affected