CVE-2020-3196
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS Denial of Service Vulnerability
Severity Score
8.6
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
A vulnerability in the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) handler of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to exhaust memory resources on the affected device, leading to a denial of service (DoS) condition. The vulnerability is due to improper resource management for inbound SSL/TLS connections. An attacker could exploit this vulnerability by establishing multiple SSL/TLS connections with specific conditions to the affected device. A successful exploit could allow the attacker to exhaust the memory on the affected device, causing the device to stop accepting new SSL/TLS connections and resulting in a DoS condition for services on the device that process SSL/TLS traffic. Manual intervention is required to recover an affected device.
Una vulnerabilidad en el manejador de Secure Sockets Layer (SSL)/Transport Layer Security (TLS) del Cisco Adaptive Security Appliance (ASA) Software y el Cisco Firepower Threat Defense (FTD) Software, podría permitir a un atacante remoto no autenticado agotar los recursos de la memoria sobre el dispositivo afectado, conllevando a una condición de denegación de servicio (DoS). La vulnerabilidad es debido a una administración de recursos inapropiada para las conexiones entrantes SSL/TLS. Un atacante podría explotar esta vulnerabilidad al establecer múltiples conexiones SSL/TLS con condiciones específicas para el dispositivo afectado. Una explotación con éxito podría permitir al atacante agotar la memoria en el dispositivo afectado, causando que el dispositivo deje de aceptar nuevas conexiones SSL/TLS y resultando en una condición DoS para los servicios en el dispositivo que procesa el tráfico SSL/TLS. Es requerida una intervención manual para recuperar un dispositivo afectado.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2019-12-12 CVE Reserved
- 2020-05-06 CVE Published
- 2023-03-08 EPSS Updated
- 2024-09-16 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-400: Uncontrolled Resource Consumption
CAPEC
References (1)
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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 5505 Firmware Search vendor "Cisco" for product "Asa 5505 Firmware" | 9.4\(4\) Search vendor "Cisco" for product "Asa 5505 Firmware" and version "9.4\(4\)" | - |
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" | 9.8\(4.18\) Search vendor "Cisco" for product "Asa 5505 Firmware" and version "9.8\(4.18\)" | - |
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" | 100.13\(0\) Search vendor "Cisco" for product "Asa 5505 Firmware" and version "100.13\(0\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5505 Search vendor "Cisco" for product "Asa 5505" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5510 Firmware Search vendor "Cisco" for product "Asa 5510 Firmware" | 9.4\(4\) Search vendor "Cisco" for product "Asa 5510 Firmware" and version "9.4\(4\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5510 Search vendor "Cisco" for product "Asa 5510" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5510 Firmware Search vendor "Cisco" for product "Asa 5510 Firmware" | 9.8\(4.18\) Search vendor "Cisco" for product "Asa 5510 Firmware" and version "9.8\(4.18\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5510 Search vendor "Cisco" for product "Asa 5510" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5510 Firmware Search vendor "Cisco" for product "Asa 5510 Firmware" | 100.13\(0\) Search vendor "Cisco" for product "Asa 5510 Firmware" and version "100.13\(0\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5510 Search vendor "Cisco" for product "Asa 5510" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5512-x Firmware Search vendor "Cisco" for product "Asa 5512-x Firmware" | 9.4\(4\) Search vendor "Cisco" for product "Asa 5512-x Firmware" and version "9.4\(4\)" | - |
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" | 9.8\(4.18\) Search vendor "Cisco" for product "Asa 5512-x Firmware" and version "9.8\(4.18\)" | - |
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" | 100.13\(0\) Search vendor "Cisco" for product "Asa 5512-x Firmware" and version "100.13\(0\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5512-x Search vendor "Cisco" for product "Asa 5512-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5515-x Firmware Search vendor "Cisco" for product "Asa 5515-x Firmware" | 9.4\(4\) Search vendor "Cisco" for product "Asa 5515-x Firmware" and version "9.4\(4\)" | - |
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" | 9.8\(4.18\) Search vendor "Cisco" for product "Asa 5515-x Firmware" and version "9.8\(4.18\)" | - |
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" | 100.13\(0\) Search vendor "Cisco" for product "Asa 5515-x Firmware" and version "100.13\(0\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5515-x Search vendor "Cisco" for product "Asa 5515-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5520 Firmware Search vendor "Cisco" for product "Asa 5520 Firmware" | 9.4\(4\) Search vendor "Cisco" for product "Asa 5520 Firmware" and version "9.4\(4\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5520 Search vendor "Cisco" for product "Asa 5520" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5520 Firmware Search vendor "Cisco" for product "Asa 5520 Firmware" | 9.8\(4.18\) Search vendor "Cisco" for product "Asa 5520 Firmware" and version "9.8\(4.18\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5520 Search vendor "Cisco" for product "Asa 5520" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5520 Firmware Search vendor "Cisco" for product "Asa 5520 Firmware" | 100.13\(0\) Search vendor "Cisco" for product "Asa 5520 Firmware" and version "100.13\(0\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5520 Search vendor "Cisco" for product "Asa 5520" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5525-x Firmware Search vendor "Cisco" for product "Asa 5525-x Firmware" | 9.4\(4\) Search vendor "Cisco" for product "Asa 5525-x Firmware" and version "9.4\(4\)" | - |
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" | 9.8\(4.18\) Search vendor "Cisco" for product "Asa 5525-x Firmware" and version "9.8\(4.18\)" | - |
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" | 100.13\(0\) Search vendor "Cisco" for product "Asa 5525-x Firmware" and version "100.13\(0\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5525-x Search vendor "Cisco" for product "Asa 5525-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5540 Firmware Search vendor "Cisco" for product "Asa 5540 Firmware" | 9.4\(4\) Search vendor "Cisco" for product "Asa 5540 Firmware" and version "9.4\(4\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5540 Search vendor "Cisco" for product "Asa 5540" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5540 Firmware Search vendor "Cisco" for product "Asa 5540 Firmware" | 9.8\(4.18\) Search vendor "Cisco" for product "Asa 5540 Firmware" and version "9.8\(4.18\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5540 Search vendor "Cisco" for product "Asa 5540" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5540 Firmware Search vendor "Cisco" for product "Asa 5540 Firmware" | 100.13\(0\) Search vendor "Cisco" for product "Asa 5540 Firmware" and version "100.13\(0\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5540 Search vendor "Cisco" for product "Asa 5540" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5545-x Firmware Search vendor "Cisco" for product "Asa 5545-x Firmware" | 9.4\(4\) Search vendor "Cisco" for product "Asa 5545-x Firmware" and version "9.4\(4\)" | - |
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" | 9.8\(4.18\) Search vendor "Cisco" for product "Asa 5545-x Firmware" and version "9.8\(4.18\)" | - |
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" | 100.13\(0\) Search vendor "Cisco" for product "Asa 5545-x Firmware" and version "100.13\(0\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5545-x Search vendor "Cisco" for product "Asa 5545-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5550 Firmware Search vendor "Cisco" for product "Asa 5550 Firmware" | 9.4\(4\) Search vendor "Cisco" for product "Asa 5550 Firmware" and version "9.4\(4\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5550 Search vendor "Cisco" for product "Asa 5550" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5550 Firmware Search vendor "Cisco" for product "Asa 5550 Firmware" | 9.8\(4.18\) Search vendor "Cisco" for product "Asa 5550 Firmware" and version "9.8\(4.18\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5550 Search vendor "Cisco" for product "Asa 5550" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5550 Firmware Search vendor "Cisco" for product "Asa 5550 Firmware" | 100.13\(0\) Search vendor "Cisco" for product "Asa 5550 Firmware" and version "100.13\(0\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5550 Search vendor "Cisco" for product "Asa 5550" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5555-x Firmware Search vendor "Cisco" for product "Asa 5555-x Firmware" | 9.4\(4\) Search vendor "Cisco" for product "Asa 5555-x Firmware" and version "9.4\(4\)" | - |
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" | 9.8\(4.18\) Search vendor "Cisco" for product "Asa 5555-x Firmware" and version "9.8\(4.18\)" | - |
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" | 100.13\(0\) Search vendor "Cisco" for product "Asa 5555-x Firmware" and version "100.13\(0\)" | - |
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" | 9.4\(4\) Search vendor "Cisco" for product "Asa 5580 Firmware" and version "9.4\(4\)" | - |
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" | 9.8\(4.18\) Search vendor "Cisco" for product "Asa 5580 Firmware" and version "9.8\(4.18\)" | - |
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" | 100.13\(0\) Search vendor "Cisco" for product "Asa 5580 Firmware" and version "100.13\(0\)" | - |
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" | 9.4\(4\) Search vendor "Cisco" for product "Asa 5585-x Firmware" and version "9.4\(4\)" | - |
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" | 9.8\(4.18\) Search vendor "Cisco" for product "Asa 5585-x Firmware" and version "9.8\(4.18\)" | - |
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" | 100.13\(0\) Search vendor "Cisco" for product "Asa 5585-x Firmware" and version "100.13\(0\)" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5585-x Search vendor "Cisco" for product "Asa 5585-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense" | >= 6.2.3 < 6.2.3.16 Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.2.3 < 6.2.3.16" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense" | >= 6.3.0 < 6.3.0.6 Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.3.0 < 6.3.0.6" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense" | >= 6.4.0 < 6.4.0.9 Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.4.0 < 6.4.0.9" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense" | >= 6.5.0 < 6.5.0.5 Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.5.0 < 6.5.0.5" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software" | >= 9.6 < 9.6.4.40 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.6 < 9.6.4.40" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software" | >= 9.8 < 9.8.4.20 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.8 < 9.8.4.20" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software" | >= 9.9 < 9.9.2.66 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.9 < 9.9.2.66" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software" | >= 9.10 < 9.10.1.37 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.10 < 9.10.1.37" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software" | >= 9.12 < 9.12.3.2 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.12 < 9.12.3.2" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software" | >= 9.13 < 9.13.1.7 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.13 < 9.13.1.7" | - |
Affected
| ||||||