Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2021-1361

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
24/02/2021
Last modified:
07/11/2023

Description

A vulnerability in the implementation of an internal file management service for Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode that are running Cisco NX-OS Software could allow an unauthenticated, remote attacker to create, delete, or overwrite arbitrary files with root privileges on the device. This vulnerability exists because TCP port 9075 is incorrectly configured to listen and respond to external connection requests. An attacker could exploit this vulnerability by sending crafted TCP packets to an IP address that is configured on a local interface on TCP port 9075. A successful exploit could allow the attacker to create, delete, or overwrite arbitrary files, including sensitive files that are related to the device configuration. For example, the attacker could add a user account without the device administrator knowing.

Impact

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

Base Score: 9.10 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

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

Base Score 3.x
9.10
Severity 3.x
CRITICAL
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 9.40 HIGH
Vector: AV:N/AC:L/Au:N/C:N/I:C/A:C

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

Base Score 2.0
9.40
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:nx-os:9.3\(5\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:9.3\(6\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3100:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3100-z:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3100v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3200:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3400:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3500:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3600:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9000v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_92160yc-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_92300yc:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_92304qc:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_92348gc-x:-:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools