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Cisco Firepower Threat Defense Software Multi-Instance Container Escape (cisco-sa-ftd-container-esc-FmYqFBQV)

medium Nessus Plugin ID 152749

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Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its self-reported version, Cisco Firepower Threat Defense Software is affected by a vulnerability in the multi-instance feature that allows an authenticated, local attacker to escape the container for their Cisco FTD instance and execute commands with root privileges in the host namespace. The attacker must have valid credentials on the device.
The vulnerability exists because a configuration file that is used at container startup has insufficient protections. An attacker could exploit this vulnerability by modifying a specific container configuration file on the underlying file system. A successful exploit could allow the attacker to execute commands with root privileges within the host namespace. This could allow the attacker to impact other running Cisco FTD instances or the host Cisco FXOS device.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvu08422

See Also

http://www.nessus.org/u?f0a81e64

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvu08422

Plugin Details

Severity: Medium

ID: 152749

File Name: cisco-sa-ftd-container-esc-FmYqFBQV.nasl

Version: 1.6

Type: local

Family: CISCO

Published: 8/23/2021

Updated: 3/31/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2020-3514

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

CPE: cpe:/o:cisco:firepower_threat_defense, cpe:/a:cisco:firepower_threat_defense

Required KB Items: installed_sw/Cisco Firepower Threat Defense

Exploit Ease: No known exploits are available

Patch Publication Date: 10/21/2020

Vulnerability Publication Date: 10/21/2020

Reference Information

CVE: CVE-2020-3514

CWE: 216

CISCO-SA: cisco-sa-ftd-container-esc-FmYqFBQV

IAVA: 2020-A-0488-S

CISCO-BUG-ID: CSCvu08422