Cisco FXOS Software Buffer Overflow (cisco-sa-fxos-buffer-cSdmfWUt)

medium Nessus Plugin ID 140218

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 a software buffer overflow vulnerability due to incorrect bounds checking that are parsed from a specific file. An authenticated, local attacker with with valid administrative credentials can exploit this, by supplying a crafted file, to cause a stack-based buffer overflow that can be used to execute arbitrary code on the underlying operating system with root privileges.

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

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvd72523

See Also

http://www.nessus.org/u?addee757

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvd72523

Plugin Details

Severity: Medium

ID: 140218

File Name: cisco-sa-fxos-buffer-cSdmfWUt.nasl

Version: 1.6

Type: local

Family: CISCO

Published: 9/4/2020

Updated: 9/10/2020

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-2020-3545

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:fxos

Required KB Items: installed_sw/FXOS

Exploit Ease: No known exploits are available

Patch Publication Date: 9/2/2020

Vulnerability Publication Date: 9/2/2020

Reference Information

CVE: CVE-2020-3545

CWE: 119

CISCO-SA: cisco-sa-fxos-buffer-cSdmfWUt

IAVA: 2020-A-0403

CISCO-BUG-ID: CSCvd72523