Detections
Analytics

Cisco NX-OS Software Image Signature Verification (CVE-2019-1615)

medium Tenable OT Security Plugin ID 501423

Synopsis

The remote OT asset is affected by a 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 image on an affected device. The vulnerability is due to improper verification of digital signatures for software images. An attacker could exploit this vulnerability by loading an unsigned software image on an affected device. A successful exploit could allow the attacker to boot a malicious software image. Note: The fix for this vulnerability requires a BIOS upgrade as part of the software upgrade.
For additional information, see the Details section of this advisory.
Nexus 3000 Series Switches are affected running software versions prior to 7.0(3)I7(5). Nexus 9000 Series Fabric Switches in ACI Mode are affected running software versions prior to 13.2(1l). Nexus 9000 Series Switches in Standalone NX-OS Mode are affected running software versions prior to 7.0(3)I7(5). Nexus 9500 R-Series Line Cards and Fabric Modules are affected running software versions prior to 7.0(3)F3(5).

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

See Also

http://www.nessus.org/u?bf14d312

http://www.securityfocus.com/bid/107397

Plugin Details

Severity: Medium

ID: 501423

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 7/25/2023

Updated: 7/26/2023

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.8

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2019-1615

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 6.2

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:nx-os:9.2%281%29, cpe:/o:cisco:nx-os:12.3%280.97%29, cpe:/o:cisco:nx-os:7.0%283%29i7%283%29, cpe:/o:cisco:nx-os:7.0%283%29i7%285%29

Required KB Items: Tenable.ot/Cisco

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/11/2019

Vulnerability Publication Date: 3/11/2019

Reference Information

CVE: CVE-2019-1615

CWE: 347