6.7
MEDIUM
CVE-2019-1809
Cisco NX-OS Software Authentication Bypass Signature Spoofing Vulnerability
Description

A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with administrator-level credentials to install a malicious software patch on an affected device. The vulnerability is due to improper verification of digital signatures for patch images. An attacker could exploit this vulnerability by crafting an unsigned software patch to bypass signature checks and loading it on an affected device. A successful exploit could allow the attacker to boot a malicious software patch image.

INFO

Published Date :

May 15, 2019, 11:29 p.m.

Last Modified :

March 24, 2023, 5:46 p.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

0.8
Affected Products

The following products are affected by CVE-2019-1809 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 nx-os
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-2019-1809.

URL Resource
http://www.securityfocus.com/bid/108375 Broken Link Third Party Advisory VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-psvb 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-2019-1809 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-1809 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 [email protected]

    May. 14, 2024

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

    Mar. 24, 2023

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://www.securityfocus.com/bid/108375 No Types Assigned http://www.securityfocus.com/bid/108375 Broken Link, Third Party Advisory, VDB Entry
  • CVE Modified by [email protected]

    Oct. 09, 2019

    Action Type Old Value New Value
    Added CVSS V3 Cisco Systems, Inc. AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
    Added CWE Cisco Systems, Inc. CWE-347
  • CVE Modified by [email protected]

    May. 20, 2019

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/108375 [No Types Assigned]
  • Initial Analysis by [email protected]

    May. 17, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:L/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-psvb No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-psvb Vendor Advisory
    Added CWE CWE-347
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 7.3 up to (excluding) 8.1\(1a\) *cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 8.2 up to (excluding) 8.3\(1\) OR cpe:2.3:h:cisco:mds_9706:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9710:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9718:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 7.2 up to (excluding) 7.3\(3\)d1\(1\) *cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 8.0 up to (excluding) 8.2\(3\) OR cpe:2.3:h:cisco:7000_10-slot:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:7000_18-slot:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:7000_4-slot:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:7000_9-slot:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:7700_10-slot:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:7700_18-slot:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:7700_2-slot:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:7700_6-slot:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n77-f312ck-26:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n77-f324fq-25:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n77-f348xp-23:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n77-f430cq-36:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n77-m312cq-26l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n77-m324fq-25l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n77-m348xp-23l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n7k-f248xp-25e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n7k-f306ck-25:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n7k-f312fq-25:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n7k-m202cf-22l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n7k-m206fq-23l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n7k-m224xp-23l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n7k-m324fq-25l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n7k-m348xp-25l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_7000_supervisor_1:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_7000_supervisor_2:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_7000_supervisor_2e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_7700_supervisor_2e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_7700_supervisor_3e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 3.1 up to (excluding) 3.2\(3k\) OR cpe:2.3:h:cisco:ucs_6248up:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:ucs_6296up:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:ucs_6324:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:ucs_6332:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:ucs_6332-16up:-:*:*:*:*:*:*:*
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-2019-1809 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-2019-1809 weaknesses.

Exploit Prediction

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

0.04 }} 0.00%

score

0.05635

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
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Scope
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