// For flags

CVE-2020-3308

Cisco Firepower Threat Defense Software Signature Verification Bypass Vulnerability

Severity Score

4.9
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability in the Image Signature Verification feature of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker with administrator-level credentials to install a malicious software patch on an affected device. The vulnerability is due to improper verification of digital signatures for patch images. An attacker could exploit this vulnerability by crafting an unsigned software patch to bypass signature checks and loading it on an affected device. A successful exploit could allow the attacker to boot a malicious software patch image.

Una vulnerabilidad en la funcionalidad Image Signature Verification del Cisco Firepower Threat Defense (FTD) Software, podría permitir a un atacante remoto autenticado con credenciales de nivel de administrador instalar un parche de software malicioso sobre un dispositivo afectado. La vulnerabilidad es debido a una verificación inapropiada de firmas digitales para imágenes de parches. Un atacante podría explotar esta vulnerabilidad al diseñar un parche de software sin firmar para omitir las comprobaciones de firmas y cargarlo sobre un dispositivo afectado. Una explotación con éxito podría permitir a un atacante iniciar una imagen de parche de software malicioso.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-12-12 CVE Reserved
  • 2020-05-06 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-347: Improper Verification of Cryptographic Signature
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"
 < 6.2.2.1
Search vendor "Cisco" for product "Firepower Threat Defense" and version " < 6.2.2.1"
-
Affected
Cisco
Search vendor "Cisco"
 Firepower Management Center
Search vendor "Cisco" for product "Firepower Management Center"
 6.2.2
Search vendor "Cisco" for product "Firepower Management Center" and version "6.2.2"
-
Affected
Cisco
Search vendor "Cisco"
 Firepower Management Center
Search vendor "Cisco" for product "Firepower Management Center"
 6.2.3
Search vendor "Cisco" for product "Firepower Management Center" and version "6.2.3"
-
Affected