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-2021-1586

Severity CVSS v4.0:
Pending analysis
Type:
CWE-345 Insufficient Verification of Data Authenticity
Publication date:
25/08/2021
Last modified:
07/11/2023

Description

A vulnerability in the Multi-Pod or Multi-Site network configurations for Cisco Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode could allow an unauthenticated, remote attacker to unexpectedly restart the device, resulting in a denial of service (DoS) condition. This vulnerability exists because TCP traffic sent to a specific port on an affected device is not properly sanitized. An attacker could exploit this vulnerability by sending crafted TCP data to a specific port that is listening on a public-facing IP address for the Multi-Pod or Multi-Site configuration. A successful exploit could allow the attacker to cause the device to restart unexpectedly, resulting in a DoS condition.

Impact

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

Base Score: 8.60 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

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

Base Score 3.x
8.60
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

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

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:nx-os:15.0\(2e\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:15.1\(1h\):*:*:*:*:*:*:*
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:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9236c:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9272q:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93108tc-ex:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93108tc-ex-24:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93108tc-fx:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93108tc-fx-24:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93108tc-fx3p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93120tx:-:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools