// For flags

CVE-2017-12340

 

Severity Score

4.2
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability in Cisco NX-OS System Software running on Cisco MDS Multilayer Director Switches, Cisco Nexus 7000 Series Switches, and Cisco Nexus 7700 Series Switches could allow an authenticated, local attacker to access the Bash shell of an affected device's operating system, even if the Bash shell is disabled on the system. The vulnerability is due to insufficient sanitization of user-supplied parameters that are passed to certain functions of the Python scripting sandbox of the affected system. An attacker could exploit this vulnerability to escape the scripting sandbox and enter the Bash shell of the operating system with the privileges of the authenticated user for the affected system. To exploit this vulnerability, the attacker must have local access to the affected system and be authenticated to the affected system with administrative or Python execution privileges. Cisco Bug IDs: CSCvd86513.

Una vulnerabilidad en Cisco NX-OS System Software que se ejecute en Cisco MDS Multilayer Director Switches, Cisco Nexus 7000 Series Switches y Cisco Nexus 7700 Series Switches podría permitir que un atacante local autenticado acceda al shell Bash del sistema operativo de un dispositivo afectado, incluso si el shell Bash está deshabilitado en el sistema. La vulnerabilidad se debe a la sanitización insuficiente de parámetros proporcionados por el usuario que se pasan a algunas funciones del sandbox de scripting de Python del dispositivo afectado. Un atacante podría explotar esta vulnerabilidad para escapar la sandbox de scripting y ejecutar el shell Bash del sistema operativo con los privilegios del usuario autenticado para el sistema afectado. Para explotar esta vulnerabilidad, el atacante debe tener acceso local al sistema afectado y estar autenticado en el sistema afectado con privilegios de administrador o de ejecución de Python. Cisco Bug IDs: CSCvd86513.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2017-08-03 CVE Reserved
  • 2017-11-30 CVE Published
  • 2024-07-03 EPSS Updated
  • 2024-08-05 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-116: Improper Encoding or Escaping of Output
  • 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"
 Nx-os
Search vendor "Cisco" for product "Nx-os"
 8.1\(0.70\)s0
Search vendor "Cisco" for product "Nx-os" and version "8.1\(0.70\)s0"
-
Affected