CVE-2021-40118: Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Denial of Service Vulnerabilities

Published Oct 27, 2021
·
Updated

A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition. This vulnerability is due to improper input validation when parsing HTTPS requests. An attacker could exploit this vulnerability by sending a malicious HTTPS request to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

Affected Software

109 affected components
Cisco Adaptive Security Appliance<9.8.4.40
Cisco Firepower Threat Defense<6.4.0.13
Cisco Firepower Threat Defense>=6.5.0<6.6.5
Cisco Firepower Threat Defense>=6.7.0<6.7.0.3
Cisco Firepower Threat Defense>=7.0.0<7.0.1
Cisco Adaptive Security Appliance Software>=9.9.0<9.12.4.29
Cisco Adaptive Security Appliance Software>=9.13.0<9.14.3.9
Cisco Adaptive Security Appliance Software>=9.15.0<9.15.1.17
Cisco Adaptive Security Appliance Software>=9.16.0<9.16.2.3
Cisco Asa 5512-x Firmware=009.012\(004.024\)
Cisco Asa 5512-x Firmware=009.015\(001\)
Cisco Asa 5512-x Firmware=009.015\(001.015\)
Cisco Asa 5512-x Firmware=009.015\(001.016\)
Cisco Asa 5512-x Firmware=009.016\(001\)
Cisco Asa 5512-x
Cisco Asa 5505 Firmware=009.012\(004.024\)
Cisco Asa 5505 Firmware=009.015\(001\)
Cisco Asa 5505 Firmware=009.015\(001.015\)
Cisco Asa 5505 Firmware=009.015\(001.016\)
Cisco Asa 5505 Firmware=009.016\(001\)
Cisco Asa 5505
Cisco Asa 5515-x Firmware=009.012\(004.024\)
Cisco Asa 5515-x Firmware=009.015\(001\)
Cisco Asa 5515-x Firmware=009.015\(001.015\)
Cisco Asa 5515-x Firmware=009.015\(001.016\)
Cisco Asa 5515-x Firmware=009.016\(001\)
Cisco Asa 5515-x
Cisco Asa 5525-x Firmware=009.012\(004.024\)
Cisco Asa 5525-x Firmware=009.015\(001\)
Cisco Asa 5525-x Firmware=009.015\(001.015\)
Cisco Asa 5525-x Firmware=009.015\(001.016\)
Cisco Asa 5525-x Firmware=009.016\(001\)
Cisco Asa 5525-x
Cisco Asa 5545-x Firmware=009.012\(004.024\)
Cisco Asa 5545-x Firmware=009.015\(001\)
Cisco Asa 5545-x Firmware=009.015\(001.015\)
Cisco Asa 5545-x Firmware=009.015\(001.016\)
Cisco Asa 5545-x Firmware=009.016\(001\)
Cisco Asa 5545-x
Cisco Asa 5555-x Firmware=009.012\(004.024\)
Cisco Asa 5555-x Firmware=009.015\(001\)
Cisco Asa 5555-x Firmware=009.015\(001.015\)
Cisco Asa 5555-x Firmware=009.015\(001.016\)
Cisco Asa 5555-x Firmware=009.016\(001\)
Cisco Asa 5555-x
Cisco Asa 5580 Firmware=009.012\(004.024\)
Cisco Asa 5580 Firmware=009.015\(001\)
Cisco Asa 5580 Firmware=009.015\(001.015\)
Cisco Asa 5580 Firmware=009.015\(001.016\)
Cisco Asa 5580 Firmware=009.016\(001\)
Cisco Asa 5580
Cisco Asa 5585-x Firmware=009.012\(004.024\)
Cisco Asa 5585-x Firmware=009.015\(001\)
Cisco Asa 5585-x Firmware=009.015\(001.015\)
Cisco Asa 5585-x Firmware=009.015\(001.016\)
Cisco Asa 5585-x Firmware=009.016\(001\)
Cisco Asa 5585-x
Cisco Secure Firewall Threat Defense<6.4.0.13
Cisco Secure Firewall Threat Defense>=6.5.0<6.6.5
Cisco Secure Firewall Threat Defense>=6.7.0<6.7.0.3
Cisco Secure Firewall Threat Defense>=7.0.0<7.0.1
All of the following
Any of the following
Cisco Asa 5512-x Firmware=009.012\(004.024\)
Cisco Asa 5512-x Firmware=009.015\(001\)
Cisco Asa 5512-x Firmware=009.015\(001.015\)
Cisco Asa 5512-x Firmware=009.015\(001.016\)
Cisco Asa 5512-x Firmware=009.016\(001\)
Cisco Asa 5512-x
All of the following
Any of the following
Cisco Asa 5505 Firmware=009.012\(004.024\)
Cisco Asa 5505 Firmware=009.015\(001\)
Cisco Asa 5505 Firmware=009.015\(001.015\)
Cisco Asa 5505 Firmware=009.015\(001.016\)
Cisco Asa 5505 Firmware=009.016\(001\)
Cisco Asa 5505
All of the following
Any of the following
Cisco Asa 5515-x Firmware=009.012\(004.024\)
Cisco Asa 5515-x Firmware=009.015\(001\)
Cisco Asa 5515-x Firmware=009.015\(001.015\)
Cisco Asa 5515-x Firmware=009.015\(001.016\)
Cisco Asa 5515-x Firmware=009.016\(001\)
Cisco Asa 5515-x
All of the following
Any of the following
Cisco Asa 5525-x Firmware=009.012\(004.024\)
Cisco Asa 5525-x Firmware=009.015\(001\)
Cisco Asa 5525-x Firmware=009.015\(001.015\)
Cisco Asa 5525-x Firmware=009.015\(001.016\)
Cisco Asa 5525-x Firmware=009.016\(001\)
Cisco Asa 5525-x
All of the following
Any of the following
Cisco Asa 5545-x Firmware=009.012\(004.024\)
Cisco Asa 5545-x Firmware=009.015\(001\)
Cisco Asa 5545-x Firmware=009.015\(001.015\)
Cisco Asa 5545-x Firmware=009.015\(001.016\)
Cisco Asa 5545-x Firmware=009.016\(001\)
Cisco Asa 5545-x
All of the following
Any of the following
Cisco Asa 5555-x Firmware=009.012\(004.024\)
Cisco Asa 5555-x Firmware=009.015\(001\)
Cisco Asa 5555-x Firmware=009.015\(001.015\)
Cisco Asa 5555-x Firmware=009.015\(001.016\)
Cisco Asa 5555-x Firmware=009.016\(001\)
Cisco Asa 5555-x
All of the following
Any of the following
Cisco Asa 5580 Firmware=009.012\(004.024\)
Cisco Asa 5580 Firmware=009.015\(001\)
Cisco Asa 5580 Firmware=009.015\(001.015\)
Cisco Asa 5580 Firmware=009.015\(001.016\)
Cisco Asa 5580 Firmware=009.016\(001\)
Cisco Asa 5580
All of the following
Any of the following
Cisco Asa 5585-x Firmware=009.012\(004.024\)
Cisco Asa 5585-x Firmware=009.015\(001\)
Cisco Asa 5585-x Firmware=009.015\(001.015\)
Cisco Asa 5585-x Firmware=009.015\(001.016\)
Cisco Asa 5585-x Firmware=009.016\(001\)
Cisco Asa 5585-x

Event History

Oct 27, 2021
CVE Published
via MITRE·06:56 PM
Data Sourced
via MITRE·06:56 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·07:15 PM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2021-40118?

CVE-2021-40118 has been assigned a CVSS score indicating a high severity risk due to the potential for denial of service.

2

Who is affected by CVE-2021-40118?

CVE-2021-40118 affects users running vulnerable versions of Cisco Adaptive Security Appliance Software and Cisco Firepower Threat Defense Software.

3

How do I fix CVE-2021-40118?

To fix CVE-2021-40118, users should update to the latest patched versions of the affected Cisco software.

4

What type of vulnerability is CVE-2021-40118?

CVE-2021-40118 is classified as a denial of service (DoS) vulnerability that can be exploited by unauthenticated remote attackers.

5

Can CVE-2021-40118 be exploited remotely?

Yes, CVE-2021-40118 can be exploited remotely by unauthenticated attackers to cause a denial of service condition.

Company

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