Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

Go to Calendar     Go to Press Room     Go to Newsletters subscription

Search

CVE-2019-1593

Severity CVSS v4.0:
Pending analysis
Type:
CWE-264 Permissions, Privileges, and Access Control
Publication date:
06/03/2019
Last modified:
17/06/2026

Description

A vulnerability in the Bash shell implementation for Cisco NX-OS Software could allow an authenticated, local attacker to escalate their privilege level by executing commands authorized to other user roles. The attacker must authenticate with valid user credentials. The vulnerability is due to the incorrect implementation of a Bash shell command that allows role-based access control (RBAC) to be bypassed. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the Bash prompt. A successful exploit could allow the attacker to escalate their privilege level by executing commands that should be restricted to other roles. For example, a dev-ops user could escalate their privilege level to admin with a successful exploit of this vulnerability.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH
Vector 2.0
AV:L/AC:L/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.20 HIGH
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Attack Vector (AV): Local
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0
7.20
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 7.0\(3\)i5 (including) 7.0\(3\)i7\(4\) (excluding)
cpe:2.3:h:cisco:nexus_3000:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 7.0\(3\)i4 (including) 7.0\(3\)i4\(9\) (excluding)
cpe:2.3:h:cisco:nexus_3000:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 7.0\(3\) (including) 7.0\(3\)i7\(4\) (excluding)
cpe:2.3:h:cisco:nexus_3500:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 7.0\(3\) (including) 7.0\(3\)f3\(5\) (excluding)
cpe:2.3:h:cisco:nexus_3600:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 8.1 (including) 8.2\(3\) (excluding)
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 8.3 (including) 8.3\(1\) (excluding)
cpe:2.3:h:cisco:nexus_7000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_7700:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 13.2\(4d\) (excluding)
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 14.0 (including) 14.0\(1h\) (excluding)
cpe:2.3:h:cisco:nexus_9000_in_aci_mode:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools