Detections
Analytics

Cisco Firepower Threat Defense Software Release 7.0.0 IPsec DoS (cisco-sa-asa-ftd-ipsec-dos-TFKQbgWC)

high Nessus Plugin ID 152025

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Synopsis

The remote device is missing a vendor-supplied security patch.

Description

A vulnerability in the software cryptography module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker or an unauthenticated attacker in a man-in-the-middle position to cause an unexpected reload of the device that results in a denial of service (DoS) condition. The vulnerability is due to a logic error in how the software cryptography module handles specific types of decryption errors. An attacker could exploit this vulnerability by sending malicious packets over an established IPsec connection. A successful exploit could cause the device to crash, forcing it to reload. Important: Successful exploitation of this vulnerability would not cause a compromise of any encrypted data. Note: This vulnerability affects only Cisco ASA Software Release 9.16.1 and Cisco FTD Software Release 7.0.0.

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 CSCvy66711.

See Also

http://www.nessus.org/u?0b3df468

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvy66711

Plugin Details

Severity: High

ID: 152025

File Name: cisco-sa-asa-ftd-ipsec-dos-TFKQbgWC-ftd.nasl

Version: 1.6

Type: local

Family: CISCO

Published: 7/23/2021

Updated: 1/26/2022

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2021-1422

CVSS v3

Risk Factor: High

Base Score: 7.7

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/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: Settings/ParanoidReport, installed_sw/Cisco Firepower Threat Defense

Exploit Ease: No known exploits are available

Patch Publication Date: 7/15/2021

Vulnerability Publication Date: 7/15/2021

Reference Information

CVE: CVE-2021-1422

CISCO-SA: cisco-sa-asa-ftd-ipsec-dos-TFKQbgWC

IAVA: 2021-A-0337-S

CISCO-BUG-ID: CSCvy66711