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Cisco FXOS Software CLI Arbitrary File Read and Write Vulnerability (cisco-sa-20200226-fxos-cli-file)

medium Nessus Plugin ID 134232

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco Firepower Extensible Operating System (FXOS) is affected by an arbitrary file read and write vulnerability in the CLI due to insufficient input validation. An authenticated, local attacker can exploit this, via crafted arguments on a specific CLI command, to read and write arbitrary files on the remote host.

Please see the included Cisco BID and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvo42637

See Also

http://www.nessus.org/u?f0375756

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvo42637

Plugin Details

Severity: Medium

ID: 134232

File Name: cisco-sa-20200226-fxos-cli-file.nasl

Version: 1.6

Type: local

Family: CISCO

Published: 3/6/2020

Updated: 3/29/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2020-3166

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5.8

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:U/RL:O/RC:C

Vulnerability Information

Required KB Items: installed_sw/FXOS

Exploit Ease: No known exploits are available

Patch Publication Date: 2/26/2020

Vulnerability Publication Date: 2/26/2020

Reference Information

CVE: CVE-2020-3166

CWE: 20

CISCO-SA: cisco-sa-20200226-fxos-cli-file

IAVA: 2020-A-0085

CISCO-BUG-ID: CSCvo42637