CVE-2020-3191
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software IPv6 DNS 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
Attend
*SSVC
Descriptions
A vulnerability in DNS over IPv6 packet processing for Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to unexpectedly reload, resulting in a denial of service (DoS) condition. The vulnerability is due to improper length validation of a field in an IPv6 DNS packet. An attacker could exploit this vulnerability by sending a crafted DNS query over IPv6, which traverses the affected device. An exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. This vulnerability is specific to DNS over IPv6 traffic only.
Una vulnerabilidad en el procesamiento de paquetes DNS sobre IPv6 para el Cisco Adaptive Security Appliance (ASA) Software y el Firepower Threat Defense (FTD) Software, podría permitir a un atacante remoto no autenticado causar que el dispositivo se sobrecargue inesperadamente, resultando en una condición de denegación de servicio (DoS). La vulnerabilidad es debido a una comprobación inapropiada de la longitud de un campo en un paquete DNS IPv6. Un atacante podría explotar esta vulnerabilidad mediante el envío de una consulta DNS sobre IPv6 diseñada, que atraviesa el dispositivo afectado. Una explotación podría permitir al atacante causar que el dispositivo se sobrecargue, resultando en una condición DoS. Esta vulnerabilidad es específica solo de DNS sobre el tráfico IPv6.
*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:Attend
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
- 2024-11-15 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-20: Improper Input Validation
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\(1\) Search vendor "Cisco" for product "Asa 5505 Firmware" and version "9.4\(1\)" | - |
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" | 96.4\(0.42\) Search vendor "Cisco" for product "Asa 5505 Firmware" and version "96.4\(0.42\)" | - |
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\(1\) Search vendor "Cisco" for product "Asa 5510 Firmware" and version "9.4\(1\)" | - |
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" | 96.4\(0.42\) Search vendor "Cisco" for product "Asa 5510 Firmware" and version "96.4\(0.42\)" | - |
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\(1\) Search vendor "Cisco" for product "Asa 5512-x Firmware" and version "9.4\(1\)" | - |
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" | 96.4\(0.42\) Search vendor "Cisco" for product "Asa 5512-x Firmware" and version "96.4\(0.42\)" | - |
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\(1\) Search vendor "Cisco" for product "Asa 5515-x Firmware" and version "9.4\(1\)" | - |
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" | 96.4\(0.42\) Search vendor "Cisco" for product "Asa 5515-x Firmware" and version "96.4\(0.42\)" | - |
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\(1\) Search vendor "Cisco" for product "Asa 5520 Firmware" and version "9.4\(1\)" | - |
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" | 96.4\(0.42\) Search vendor "Cisco" for product "Asa 5520 Firmware" and version "96.4\(0.42\)" | - |
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\(1\) Search vendor "Cisco" for product "Asa 5525-x Firmware" and version "9.4\(1\)" | - |
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" | 96.4\(0.42\) Search vendor "Cisco" for product "Asa 5525-x Firmware" and version "96.4\(0.42\)" | - |
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\(1\) Search vendor "Cisco" for product "Asa 5540 Firmware" and version "9.4\(1\)" | - |
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" | 96.4\(0.42\) Search vendor "Cisco" for product "Asa 5540 Firmware" and version "96.4\(0.42\)" | - |
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\(1\) Search vendor "Cisco" for product "Asa 5545-x Firmware" and version "9.4\(1\)" | - |
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" | 96.4\(0.42\) Search vendor "Cisco" for product "Asa 5545-x Firmware" and version "96.4\(0.42\)" | - |
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\(1\) Search vendor "Cisco" for product "Asa 5550 Firmware" and version "9.4\(1\)" | - |
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" | 96.4\(0.42\) Search vendor "Cisco" for product "Asa 5550 Firmware" and version "96.4\(0.42\)" | - |
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\(1\) Search vendor "Cisco" for product "Asa 5555-x Firmware" and version "9.4\(1\)" | - |
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" | 96.4\(0.42\) Search vendor "Cisco" for product "Asa 5555-x Firmware" and version "96.4\(0.42\)" | - |
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\(1\) Search vendor "Cisco" for product "Asa 5580 Firmware" and version "9.4\(1\)" | - |
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" | 96.4\(0.42\) Search vendor "Cisco" for product "Asa 5580 Firmware" and version "96.4\(0.42\)" | - |
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\(1\) Search vendor "Cisco" for product "Asa 5585-x Firmware" and version "9.4\(1\)" | - |
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" | 96.4\(0.42\) Search vendor "Cisco" for product "Asa 5585-x Firmware" and version "96.4\(0.42\)" | - |
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 < 6.4.0.6 Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.4.0 < 6.4.0.6" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software" | >= 9.6 < 9.6.4.36 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.6 < 9.6.4.36" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software" | >= 9.8 < 9.8.4.12 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.8 < 9.8.4.12" | - |
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 < 9.12.2.9 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.12 < 9.12.2.9" | - |
Affected
| ||||||