Cisco Firepower Threat Defense Software SSL/TLS DoS (cisco-sa-asaftd-dos-4ygzLKU9)

high Nessus Plugin ID 155444

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 the SSL/TLS message handler due to improper packet processing. An unauthenticated, remote attacker can exploit this, by sending crafted packets, in order to cause the device to reload.

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 CSCvy43187

See Also

http://www.nessus.org/u?29eccd9b

https://tools.cisco.com/security/center/viewErp.x?alertId=ERP-74773

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvy43187

Plugin Details

Severity: High

ID: 155444

File Name: cisco-sa-asaftd-dos-4ygzLKU9-ftd.nasl

Version: 1.7

Type: local

Family: CISCO

Published: 11/17/2021

Updated: 1/26/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2021-40117

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: 10/27/2021

Vulnerability Publication Date: 10/27/2021

Reference Information

CVE: CVE-2021-40117

CWE: 119

CISCO-SA: cisco-sa-asaftd-dos-4ygzLKU9

IAVA: 2021-A-0508-S

CISCO-BUG-ID: CSCvy43187