Cisco Firepower Threat Defense Snort Modbus DoS (cisco-sa-snort-dos-9D3hJLuj)

high Nessus Plugin ID 157157

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco FTD Software is affected by a denial of service (DoS) vulnerability in its Snort Modbus component due to an integer overflow. An unauthenticated, remote attacker can exploit this issue to cause the Snort process to stop responding.

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

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 IDs CSCvz25197, CSCvz27235, CSCvz34380, CSCvz79589

Plugin Details

Severity: High

ID: 157157

File Name: cisco-sa-snort-dos-9D3hJLuj-ftd.nasl

Version: 1.6

Type: local

Family: CISCO

Published: 1/27/2022

Updated: 1/28/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2022-20685

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: 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: 1/19/2022

Vulnerability Publication Date: 1/19/2022

Reference Information

CVE: CVE-2022-20685

CISCO-SA: cisco-sa-snort-dos-9D3hJLuj

IAVA: 2022-A-0049

CISCO-BUG-ID: CSCvz25197, CSCvz27235, CSCvz34380, CSCvz79589

Detections

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