// For flags

CVE-2021-34754

Cisco Firepower Threat Defense Software Ethernet Industrial Protocol Policy Bypass Vulnerabilities

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

Multiple vulnerabilities in the payload inspection for Ethernet Industrial Protocol (ENIP) traffic for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured rules for ENIP traffic. These vulnerabilities are due to incomplete processing during deep packet inspection for ENIP packets. An attacker could exploit these vulnerabilities by sending a crafted ENIP packet to the targeted interface. A successful exploit could allow the attacker to bypass configured access control and intrusion policies that should be activated for the ENIP packet.

Múltiples vulnerabilidades en la inspección de la carga útil del tráfico del Protocolo Industrial Ethernet (ENIP) para el software Cisco Firepower Threat Defense (FTD) podrían permitir a un atacante remoto no autenticado omitir las reglas configuradas para el tráfico ENIP. Estas vulnerabilidades son debido al procesamiento incompleto durante la inspección profunda de paquetes para los paquetes ENIP. Un atacante podría explotar estas vulnerabilidades enviando un paquete ENIP diseñado a la interfaz objetivo. Una explotación con éxito podría permitir al atacante omitir el control de acceso configurado y las políticas de intrusión que deberían activarse para el paquete ENIP

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
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
  • 2021-06-15 CVE Reserved
  • 2021-10-27 CVE Published
  • 2024-07-12 EPSS Updated
  • 2024-11-07 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-284: Improper Access Control
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
Search vendor "Cisco" for product "Firepower Management Center" and version "2.9.12"
-
Affected
Cisco
Search vendor "Cisco"
Firepower Management Center
Search vendor "Cisco" for product "Firepower Management Center"
2.9.14.0
Search vendor "Cisco" for product "Firepower Management Center" and version "2.9.14.0"
-
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 Management Center
Search vendor "Cisco" for product "Firepower Management Center"
2.9.17
Search vendor "Cisco" for product "Firepower Management Center" and version "2.9.17"
-
Affected
Cisco
Search vendor "Cisco"
Firepower Management Center
Search vendor "Cisco" for product "Firepower Management Center"
2.9.18
Search vendor "Cisco" for product "Firepower Management Center" and version "2.9.18"
-
Affected
Cisco
Search vendor "Cisco"
Firepower Threat Defense
Search vendor "Cisco" for product "Firepower Threat Defense"
>= 6.4.0 < 6.4.0.13
Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.4.0 < 6.4.0.13"
-
Affected
Cisco
Search vendor "Cisco"
Firepower Threat Defense
Search vendor "Cisco" for product "Firepower Threat Defense"
>= 6.6.0 < 6.6.5.1
Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.6.0 < 6.6.5.1"
-
Affected
Cisco
Search vendor "Cisco"
Firepower Threat Defense
Search vendor "Cisco" for product "Firepower Threat Defense"
>= 6.7.0 < 6.7.0.3
Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.7.0 < 6.7.0.3"
-
Affected
Cisco
Search vendor "Cisco"
Firepower Threat Defense
Search vendor "Cisco" for product "Firepower Threat Defense"
>= 7.0.0 < 7.0.1
Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 7.0.0 < 7.0.1"
-
Affected