high
8.6
CWE
787 121 20
Advisory Published
Updated

CVE-2021-40118: Input Validation

First published: Wed 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.

Credit: ykramarz@cisco.com ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
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

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