// For flags

CVE-2021-1256

Cisco Firepower Threat Defense Software Command File Overwrite Vulnerability

Severity Score

6.0
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

A vulnerability in the CLI of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to overwrite files on the file system of an affected device by using directory traversal techniques. A successful exploit could cause system instability if important system files are overwritten. This vulnerability is due to insufficient validation of user input for the file path in a specific CLI command. An attacker could exploit this vulnerability by logging in to a targeted device and issuing a specific CLI command with crafted user input. A successful exploit could allow the attacker to overwrite arbitrary files on the file system of the affected device. The attacker would need valid user credentials on the device.

Una vulnerabilidad en la CLI del software Cisco Firepower Threat Defense (FTD), podría permitir a un atacante autenticado local sobrescribir archivos en el sistema de archivos de un dispositivo afectado mediante el uso de técnicas de salto de directorios. Una explotación con éxito podría causar inestabilidad en el sistema si archivos importantes del sistema son sobrescritos. Esta vulnerabilidad es debido a una comprobación insuficiente de entrada del usuario para la ruta del archivo en un comando CLI específico. Un atacante podría explotar esta vulnerabilidad al iniciar sesión en un dispositivo de destino y emitir un comando CLI específico con la entrada del usuario. Una explotación con éxito podría permitir al atacante sobrescribir archivos arbitrarios en el sistema de archivos del dispositivo afectado. El atacante necesitaría credenciales de usuario válidas en el dispositivo

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2020-11-13 CVE Reserved
  • 2021-04-29 CVE Published
  • 2023-07-01 EPSS Updated
  • 2024-11-08 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-552: Files or Directories Accessible to External Parties
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"
 <= 6.4.0
Search vendor "Cisco" for product "Firepower Threat Defense" and version " <= 6.4.0"
-
Affected
Cisco
Search vendor "Cisco"
 Firepower Threat Defense
Search vendor "Cisco" for product "Firepower Threat Defense"
 >= 6.6.0 < 6.6.4
Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.6.0 < 6.6.4"
-
Affected