Cisco Firepower 2100 Series SSL/TLS Inspection DoS (cisco-sa-ftd-ssl-dcrpt-dos-RYEkX4yy)

high Nessus Plugin ID 149465
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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, the SSL/TLS inspection of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series firewalls is affected by denial of service vulnerability due to improper input validation for certain fields of specific SSL/TLS messages. An unauthenticated, remote attacker can exploit this by sending a malformed SSL/TLS message through an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

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 ID CSCvs56802

See Also

http://www.nessus.org/u?c4ad2b95

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvs56802

Plugin Details

Severity: High

ID: 149465

File Name: cisco-sa-ftd-ssl-dcrpt-dos-RYEkX4yy.nasl

Version: 1.4

Type: local

Family: CISCO

Published: 5/13/2021

Updated: 5/17/2021

Dependencies: cisco_enumerate_firepower.nbin

Risk Information

CVSS Score Source: CVE-2020-3562

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

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

Temporal Vector: 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-2020-3562

IAVA: 2020-A-0488

CISCO-BUG-ID: CSCvs56802

CISCO-SA: cisco-sa-ftd-ssl-dcrpt-dos-RYEkX4yy

CWE: 119