9.8
CRITICAL
CVE-2019-1804
Cisco Nexus 9000 Series SSH Key Management Remote Root Access Vulnerability
Description

A vulnerability in the SSH key management for the Cisco Nexus 9000 Series Application Centric Infrastructure (ACI) Mode Switch Software could allow an unauthenticated, remote attacker to connect to the affected system with the privileges of the root user. The vulnerability is due to the presence of a default SSH key pair that is present in all devices. An attacker could exploit this vulnerability by opening an SSH connection via IPv6 to a targeted device using the extracted key materials. An exploit could allow the attacker to access the system with the privileges of the root user. This vulnerability is only exploitable over IPv6; IPv4 is not vulnerable.

INFO

Published Date :

May 3, 2019, 5:29 p.m.

Last Modified :

Nov. 21, 2024, 4:37 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2019-1804 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Cisco nexus_93180yc-ex_firmware
2 Cisco nexus_93120tx_firmware
3 Cisco nexus_93108tc-ex_firmware
4 Cisco nexus_9504_firmware
5 Cisco nexus_9508_firmware
6 Cisco nexus_9516_firmware
7 Cisco nexus_93128tx_firmware
8 Cisco nexus_9332pq_firmware
9 Cisco nexus_9372px_firmware
10 Cisco nexus_9372tx_firmware
11 Cisco nexus_9396px_firmware
12 Cisco nexus_9396tx_firmware
13 Cisco nexus_9500_firmware
14 Cisco nexus_93108tc-ex
15 Cisco nexus_93120tx
16 Cisco nexus_93128tx
17 Cisco nexus_93180yc-ex
18 Cisco nexus_9332pq
19 Cisco nexus_9372px
20 Cisco nexus_9372tx
21 Cisco nexus_9396px
22 Cisco nexus_9396tx
23 Cisco nexus_9500
24 Cisco nexus_9504
25 Cisco nexus_9508
26 Cisco nexus_9516
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-1804.

URL Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-nexus9k-sshkey Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-nexus9k-sshkey Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-1804 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-1804 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-nexus9k-sshkey
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Nov. 03, 2021

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Removed CWE NIST CWE-310
    Added CWE NIST CWE-1188
  • CVE Modified by [email protected]

    Oct. 09, 2019

    Action Type Old Value New Value
    Added CVSS V3 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CWE Cisco Systems, Inc. CWE-310
  • Initial Analysis by [email protected]

    May. 06, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-nexus9k-sshkey No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-nexus9k-sshkey Vendor Advisory
    Added CWE CWE-310
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nexus_9332pq_firmware:14.0\(3d\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:nexus_9332pq:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nexus_93180yc-ex_firmware:14.0\(3d\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:nexus_93180yc-ex:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nexus_93128tx_firmware:14.0\(3d\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:nexus_93128tx:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nexus_93120tx_firmware:14.0\(3d\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:nexus_93120tx:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nexus_93108tc-ex_firmware:14.0\(3d\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:nexus_93108tc-ex:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nexus_9516_firmware:14.0\(3d\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:nexus_9516:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nexus_9508_firmware:14.0\(3d\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:nexus_9508:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nexus_9504_firmware:14.0\(3d\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:nexus_9504:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nexus_9500_firmware:14.0\(3d\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:nexus_9500:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nexus_9396tx_firmware:14.0\(3d\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:nexus_9396tx:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nexus_9396px_firmware:14.0\(3d\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:nexus_9396px:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nexus_9372tx_firmware:14.0\(3d\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:nexus_9372tx:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nexus_9372px_firmware:14.0\(3d\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:nexus_9372px:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-1804 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-1804 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.34 }} 0.00%

score

0.67013

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability