CVEvulnerability

CVE-2017-12340

4.2 MEDIUM Published 2017-11-30 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2017-11-30
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
4.2 MEDIUM — CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
CVSS 2.0 ([email protected])
4.6 MEDIUM — AV:L/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-116, CWE-284

Description

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.

Affected configurations

• cisco nx-os 8.1\(0.70\)s0

Related

Weakness · CWE (2)

  • CWE-116 Improper Encoding or Escaping of Output weakness
  • CWE-284 Improper Access Control weakness

References