CVE-2020-3255

Cisco Firepower Threat Defense Software Packet Flood Denial of Service Vulnerability

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

A vulnerability in the packet processing functionality of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to inefficient memory management. An attacker could exploit this vulnerability by sending a high rate of IPv4 or IPv6 traffic through an affected device. This traffic would need to match a configured block action in an access control policy. An exploit could allow the attacker to cause a memory exhaustion condition on the affected device, which would result in a DoS for traffic transiting the device, as well as sluggish performance of the management interface. Once the flood is stopped, performance should return to previous states.

Una vulnerabilidad en la funcionalidad de procesamiento de paquetes del Cisco Firepower Threat Defense (FTD) Software, podría permitir a un atacante remoto no autenticado causar una condición de denegación de servicio (DoS) sobre un dispositivo afectado. La vulnerabilidad es debido a una administración ineficiente de la memoria. Un atacante podría explotar esta vulnerabilidad mediante el envío de una alta tasa de tráfico IPv4 o IPv6 a través de un dispositivo afectado. Este tráfico necesitaría coincidir con una acción de bloqueo configurada en una política de control de acceso. Una explotación podría permitir a un atacante causar una condición de agotamiento de la memoria en el dispositivo afectado, lo que resultaría en una DoS para el tráfico que transita el dispositivo, así como un rendimiento lento de la interfaz de administración. Una vez que se detiene la inundación, el rendimiento debe volver a los estados anteriores.

*Credits: N/A

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

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2019-12-12 CVE Reserved
2020-05-06 CVE Published
2023-03-07 EPSS Updated
2024-11-15 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-dos-N2vQZASR	2020-05-12

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"	9.10\(1.3\) Search vendor "Cisco" for product "Asa 5505 Firmware" and version "9.10\(1.3\)"	-	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"	9.10\(1.3\) Search vendor "Cisco" for product "Asa 5510 Firmware" and version "9.10\(1.3\)"	-	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"	9.10\(1.3\) Search vendor "Cisco" for product "Asa 5512-x Firmware" and version "9.10\(1.3\)"	-	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"	9.10\(1.3\) Search vendor "Cisco" for product "Asa 5515-x Firmware" and version "9.10\(1.3\)"	-	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"	9.10\(1.3\) Search vendor "Cisco" for product "Asa 5520 Firmware" and version "9.10\(1.3\)"	-	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"	9.10\(1.3\) Search vendor "Cisco" for product "Asa 5525-x Firmware" and version "9.10\(1.3\)"	-	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"	9.10\(1.3\) Search vendor "Cisco" for product "Asa 5540 Firmware" and version "9.10\(1.3\)"	-	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"	9.10\(1.3\) Search vendor "Cisco" for product "Asa 5545-x Firmware" and version "9.10\(1.3\)"	-	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"	9.10\(1.3\) Search vendor "Cisco" for product "Asa 5550 Firmware" and version "9.10\(1.3\)"	-	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"	9.10\(1.3\) Search vendor "Cisco" for product "Asa 5555-x Firmware" and version "9.10\(1.3\)"	-	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"	9.10\(1.3\) Search vendor "Cisco" for product "Asa 5580 Firmware" and version "9.10\(1.3\)"	-	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"	9.10\(1.3\) Search vendor "Cisco" for product "Asa 5585-x Firmware" and version "9.10\(1.3\)"	-	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