Cisco Firepower Threat Defense Software Remote Access SSL VPN DoS (cisco-sa-asa-dos-tL4uA4AA)

high Nessus Plugin ID 161868

Synopsis

The remote device is missing a vendor-supplied security patch

Description

A vulnerability in the remote access SSL VPN features of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

This vulnerability is due to improper validation of errors that are logged as a result of client connections that are made using remote access VPN. An attacker could exploit this vulnerability by sending crafted requests to an affected system.

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

Note that Nessus has not tested for these issues 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 CSCwa04461

See Also

http://www.nessus.org/u?3087735a

https://tools.cisco.com/security/center/viewErp.x?alertId=ERP-74836

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwa04461

Plugin Details

Severity: High

ID: 161868

File Name: cisco-sa-asa-dos-tL4uA4AA-ftd.nasl

Version: 1.7

Type: local

Family: CISCO

Published: 6/6/2022

Updated: 11/16/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

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-2022-20715

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: 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: 4/27/2022

Vulnerability Publication Date: 4/27/2022

Reference Information

CVE: CVE-2022-20715

CWE: 399

CISCO-SA: cisco-sa-asa-dos-tL4uA4AA

IAVA: 2022-A-0185-S

CISCO-BUG-ID: CSCwa04461