// For flags

CVE-2021-40118

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Denial of Service Vulnerabilities

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

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.

Una vulnerabilidad en la interfaz de servicios web del software Cisco Adaptive Security Appliance (ASA) y el software Cisco Firepower Threat Defense (FTD) podría permitir a un atacante remoto no autenticado desencadenar una condición de denegación de servicio (DoS). Esta vulnerabilidad se debe a una validación de entrada inadecuada al analizar las solicitudes HTTPS. Un atacante podría explotar esta vulnerabilidad enviando una solicitud HTTPS maliciosa a un dispositivo afectado. Una explotación exitosa podría permitir al atacante hacer que el dispositivo se recargue, resultando en una condición de DoS

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2021-08-25 CVE Reserved
  • 2021-10-27 CVE Published
  • 2024-07-12 EPSS Updated
  • 2024-11-07 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-121: Stack-based Buffer Overflow
  • CWE-787: Out-of-bounds Write
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Cisco
Search vendor "Cisco"
Asa 5512-x Firmware
Search vendor "Cisco" for product "Asa 5512-x Firmware"
009.012\(004.024\)
Search vendor "Cisco" for product "Asa 5512-x Firmware" and version "009.012\(004.024\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5512-x
Search vendor "Cisco" for product "Asa 5512-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5512-x Firmware
Search vendor "Cisco" for product "Asa 5512-x Firmware"
009.015\(001\)
Search vendor "Cisco" for product "Asa 5512-x Firmware" and version "009.015\(001\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5512-x
Search vendor "Cisco" for product "Asa 5512-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5512-x Firmware
Search vendor "Cisco" for product "Asa 5512-x Firmware"
009.015\(001.015\)
Search vendor "Cisco" for product "Asa 5512-x Firmware" and version "009.015\(001.015\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5512-x
Search vendor "Cisco" for product "Asa 5512-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5512-x Firmware
Search vendor "Cisco" for product "Asa 5512-x Firmware"
009.015\(001.016\)
Search vendor "Cisco" for product "Asa 5512-x Firmware" and version "009.015\(001.016\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5512-x
Search vendor "Cisco" for product "Asa 5512-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5512-x Firmware
Search vendor "Cisco" for product "Asa 5512-x Firmware"
009.016\(001\)
Search vendor "Cisco" for product "Asa 5512-x Firmware" and version "009.016\(001\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5512-x
Search vendor "Cisco" for product "Asa 5512-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5505 Firmware
Search vendor "Cisco" for product "Asa 5505 Firmware"
009.012\(004.024\)
Search vendor "Cisco" for product "Asa 5505 Firmware" and version "009.012\(004.024\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5505
Search vendor "Cisco" for product "Asa 5505"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5505 Firmware
Search vendor "Cisco" for product "Asa 5505 Firmware"
009.015\(001\)
Search vendor "Cisco" for product "Asa 5505 Firmware" and version "009.015\(001\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5505
Search vendor "Cisco" for product "Asa 5505"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5505 Firmware
Search vendor "Cisco" for product "Asa 5505 Firmware"
009.015\(001.015\)
Search vendor "Cisco" for product "Asa 5505 Firmware" and version "009.015\(001.015\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5505
Search vendor "Cisco" for product "Asa 5505"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5505 Firmware
Search vendor "Cisco" for product "Asa 5505 Firmware"
009.015\(001.016\)
Search vendor "Cisco" for product "Asa 5505 Firmware" and version "009.015\(001.016\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5505
Search vendor "Cisco" for product "Asa 5505"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5505 Firmware
Search vendor "Cisco" for product "Asa 5505 Firmware"
009.016\(001\)
Search vendor "Cisco" for product "Asa 5505 Firmware" and version "009.016\(001\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5505
Search vendor "Cisco" for product "Asa 5505"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5515-x Firmware
Search vendor "Cisco" for product "Asa 5515-x Firmware"
009.012\(004.024\)
Search vendor "Cisco" for product "Asa 5515-x Firmware" and version "009.012\(004.024\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5515-x
Search vendor "Cisco" for product "Asa 5515-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5515-x Firmware
Search vendor "Cisco" for product "Asa 5515-x Firmware"
009.015\(001\)
Search vendor "Cisco" for product "Asa 5515-x Firmware" and version "009.015\(001\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5515-x
Search vendor "Cisco" for product "Asa 5515-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5515-x Firmware
Search vendor "Cisco" for product "Asa 5515-x Firmware"
009.015\(001.015\)
Search vendor "Cisco" for product "Asa 5515-x Firmware" and version "009.015\(001.015\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5515-x
Search vendor "Cisco" for product "Asa 5515-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5515-x Firmware
Search vendor "Cisco" for product "Asa 5515-x Firmware"
009.015\(001.016\)
Search vendor "Cisco" for product "Asa 5515-x Firmware" and version "009.015\(001.016\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5515-x
Search vendor "Cisco" for product "Asa 5515-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5515-x Firmware
Search vendor "Cisco" for product "Asa 5515-x Firmware"
009.016\(001\)
Search vendor "Cisco" for product "Asa 5515-x Firmware" and version "009.016\(001\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5515-x
Search vendor "Cisco" for product "Asa 5515-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5525-x Firmware
Search vendor "Cisco" for product "Asa 5525-x Firmware"
009.012\(004.024\)
Search vendor "Cisco" for product "Asa 5525-x Firmware" and version "009.012\(004.024\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5525-x
Search vendor "Cisco" for product "Asa 5525-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5525-x Firmware
Search vendor "Cisco" for product "Asa 5525-x Firmware"
009.015\(001\)
Search vendor "Cisco" for product "Asa 5525-x Firmware" and version "009.015\(001\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5525-x
Search vendor "Cisco" for product "Asa 5525-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5525-x Firmware
Search vendor "Cisco" for product "Asa 5525-x Firmware"
009.015\(001.015\)
Search vendor "Cisco" for product "Asa 5525-x Firmware" and version "009.015\(001.015\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5525-x
Search vendor "Cisco" for product "Asa 5525-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5525-x Firmware
Search vendor "Cisco" for product "Asa 5525-x Firmware"
009.015\(001.016\)
Search vendor "Cisco" for product "Asa 5525-x Firmware" and version "009.015\(001.016\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5525-x
Search vendor "Cisco" for product "Asa 5525-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5525-x Firmware
Search vendor "Cisco" for product "Asa 5525-x Firmware"
009.016\(001\)
Search vendor "Cisco" for product "Asa 5525-x Firmware" and version "009.016\(001\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5525-x
Search vendor "Cisco" for product "Asa 5525-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5545-x Firmware
Search vendor "Cisco" for product "Asa 5545-x Firmware"
009.012\(004.024\)
Search vendor "Cisco" for product "Asa 5545-x Firmware" and version "009.012\(004.024\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5545-x
Search vendor "Cisco" for product "Asa 5545-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5545-x Firmware
Search vendor "Cisco" for product "Asa 5545-x Firmware"
009.015\(001\)
Search vendor "Cisco" for product "Asa 5545-x Firmware" and version "009.015\(001\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5545-x
Search vendor "Cisco" for product "Asa 5545-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5545-x Firmware
Search vendor "Cisco" for product "Asa 5545-x Firmware"
009.015\(001.015\)
Search vendor "Cisco" for product "Asa 5545-x Firmware" and version "009.015\(001.015\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5545-x
Search vendor "Cisco" for product "Asa 5545-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5545-x Firmware
Search vendor "Cisco" for product "Asa 5545-x Firmware"
009.015\(001.016\)
Search vendor "Cisco" for product "Asa 5545-x Firmware" and version "009.015\(001.016\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5545-x
Search vendor "Cisco" for product "Asa 5545-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5545-x Firmware
Search vendor "Cisco" for product "Asa 5545-x Firmware"
009.016\(001\)
Search vendor "Cisco" for product "Asa 5545-x Firmware" and version "009.016\(001\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5545-x
Search vendor "Cisco" for product "Asa 5545-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5555-x Firmware
Search vendor "Cisco" for product "Asa 5555-x Firmware"
009.012\(004.024\)
Search vendor "Cisco" for product "Asa 5555-x Firmware" and version "009.012\(004.024\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5555-x
Search vendor "Cisco" for product "Asa 5555-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5555-x Firmware
Search vendor "Cisco" for product "Asa 5555-x Firmware"
009.015\(001\)
Search vendor "Cisco" for product "Asa 5555-x Firmware" and version "009.015\(001\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5555-x
Search vendor "Cisco" for product "Asa 5555-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5555-x Firmware
Search vendor "Cisco" for product "Asa 5555-x Firmware"
009.015\(001.015\)
Search vendor "Cisco" for product "Asa 5555-x Firmware" and version "009.015\(001.015\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5555-x
Search vendor "Cisco" for product "Asa 5555-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5555-x Firmware
Search vendor "Cisco" for product "Asa 5555-x Firmware"
009.015\(001.016\)
Search vendor "Cisco" for product "Asa 5555-x Firmware" and version "009.015\(001.016\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5555-x
Search vendor "Cisco" for product "Asa 5555-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5555-x Firmware
Search vendor "Cisco" for product "Asa 5555-x Firmware"
009.016\(001\)
Search vendor "Cisco" for product "Asa 5555-x Firmware" and version "009.016\(001\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5555-x
Search vendor "Cisco" for product "Asa 5555-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5580 Firmware
Search vendor "Cisco" for product "Asa 5580 Firmware"
009.012\(004.024\)
Search vendor "Cisco" for product "Asa 5580 Firmware" and version "009.012\(004.024\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5580
Search vendor "Cisco" for product "Asa 5580"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5580 Firmware
Search vendor "Cisco" for product "Asa 5580 Firmware"
009.015\(001\)
Search vendor "Cisco" for product "Asa 5580 Firmware" and version "009.015\(001\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5580
Search vendor "Cisco" for product "Asa 5580"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5580 Firmware
Search vendor "Cisco" for product "Asa 5580 Firmware"
009.015\(001.015\)
Search vendor "Cisco" for product "Asa 5580 Firmware" and version "009.015\(001.015\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5580
Search vendor "Cisco" for product "Asa 5580"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5580 Firmware
Search vendor "Cisco" for product "Asa 5580 Firmware"
009.015\(001.016\)
Search vendor "Cisco" for product "Asa 5580 Firmware" and version "009.015\(001.016\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5580
Search vendor "Cisco" for product "Asa 5580"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5580 Firmware
Search vendor "Cisco" for product "Asa 5580 Firmware"
009.016\(001\)
Search vendor "Cisco" for product "Asa 5580 Firmware" and version "009.016\(001\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5580
Search vendor "Cisco" for product "Asa 5580"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5585-x Firmware
Search vendor "Cisco" for product "Asa 5585-x Firmware"
009.012\(004.024\)
Search vendor "Cisco" for product "Asa 5585-x Firmware" and version "009.012\(004.024\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5585-x
Search vendor "Cisco" for product "Asa 5585-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5585-x Firmware
Search vendor "Cisco" for product "Asa 5585-x Firmware"
009.015\(001\)
Search vendor "Cisco" for product "Asa 5585-x Firmware" and version "009.015\(001\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5585-x
Search vendor "Cisco" for product "Asa 5585-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5585-x Firmware
Search vendor "Cisco" for product "Asa 5585-x Firmware"
009.015\(001.015\)
Search vendor "Cisco" for product "Asa 5585-x Firmware" and version "009.015\(001.015\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5585-x
Search vendor "Cisco" for product "Asa 5585-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5585-x Firmware
Search vendor "Cisco" for product "Asa 5585-x Firmware"
009.015\(001.016\)
Search vendor "Cisco" for product "Asa 5585-x Firmware" and version "009.015\(001.016\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5585-x
Search vendor "Cisco" for product "Asa 5585-x"
--
Safe
Cisco
Search vendor "Cisco"
Asa 5585-x Firmware
Search vendor "Cisco" for product "Asa 5585-x Firmware"
009.016\(001\)
Search vendor "Cisco" for product "Asa 5585-x Firmware" and version "009.016\(001\)"
-
Affected
in Cisco
Search vendor "Cisco"
Asa 5585-x
Search vendor "Cisco" for product "Asa 5585-x"
--
Safe
Cisco
Search vendor "Cisco"
Adaptive Security Appliance
Search vendor "Cisco" for product "Adaptive Security Appliance"
< 9.8.4.40
Search vendor "Cisco" for product "Adaptive Security Appliance" and version " < 9.8.4.40"
-
Affected
Cisco
Search vendor "Cisco"
Firepower Threat Defense
Search vendor "Cisco" for product "Firepower Threat Defense"
< 6.4.0.13
Search vendor "Cisco" for product "Firepower Threat Defense" and version " < 6.4.0.13"
-
Affected
Cisco
Search vendor "Cisco"
Firepower Threat Defense
Search vendor "Cisco" for product "Firepower Threat Defense"
>= 6.5.0 < 6.6.5
Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.5.0 < 6.6.5"
-
Affected
Cisco
Search vendor "Cisco"
Firepower Threat Defense
Search vendor "Cisco" for product "Firepower Threat Defense"
>= 6.7.0 < 6.7.0.3
Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.7.0 < 6.7.0.3"
-
Affected
Cisco
Search vendor "Cisco"
Firepower Threat Defense
Search vendor "Cisco" for product "Firepower Threat Defense"
>= 7.0.0 < 7.0.1
Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 7.0.0 < 7.0.1"
-
Affected
Cisco
Search vendor "Cisco"
Adaptive Security Appliance Software
Search vendor "Cisco" for product "Adaptive Security Appliance Software"
>= 9.9.0 < 9.12.4.29
Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.9.0 < 9.12.4.29"
-
Affected
Cisco
Search vendor "Cisco"
Adaptive Security Appliance Software
Search vendor "Cisco" for product "Adaptive Security Appliance Software"
>= 9.13.0 < 9.14.3.9
Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.13.0 < 9.14.3.9"
-
Affected
Cisco
Search vendor "Cisco"
Adaptive Security Appliance Software
Search vendor "Cisco" for product "Adaptive Security Appliance Software"
>= 9.15.0 < 9.15.1.17
Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.15.0 < 9.15.1.17"
-
Affected
Cisco
Search vendor "Cisco"
Adaptive Security Appliance Software
Search vendor "Cisco" for product "Adaptive Security Appliance Software"
>= 9.16.0 < 9.16.2.3
Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.16.0 < 9.16.2.3"
-
Affected