CVE-2020-3528

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software OSPFv2 Link-Local Signaling 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 OSPF Version 2 (OSPFv2) implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to incomplete input validation when the affected software processes certain OSPFv2 packets with Link-Local Signaling (LLS) data. An attacker could exploit this vulnerability by sending a malformed OSPFv2 packet to an affected device. A successful exploit could allow the attacker to cause an affected device to reload, resulting in a DoS condition.

Una vulnerabilidad en la implementación OSPF versión 2 (OSPFv2) de Cisco Adaptive Security Appliance (ASA) Software y Cisco Firepower Threat Defense (FTD) Software, podría permitir a un atacante remoto no autenticado causar la recarga de un dispositivo afectado, resultando en una condición de denegación de servicio (DoS). La vulnerabilidad es debido a una comprobación de entrada incompleta cuando el software afectado procesa ciertos paquetes OSPFv2 con datos Link-Local Signaling (LLS). Un atacante podría explotar esta vulnerabilidad mediante el envío de un paquete OSPFv2 malformado a un dispositivo afectado. Una explotación con éxito podría permitir a un atacante causar que un dispositivo afectado 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

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
2020-10-21 CVE Published
2023-07-07 EPSS Updated
2024-11-13 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-asaftd-ospflls-37Xy2q6r	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Adaptive Security Appliance Search vendor "Cisco" for product "Adaptive Security Appliance"				< 9.6 Search vendor "Cisco" for product "Adaptive Security Appliance" and version " < 9.6"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				< 6.3.0.6 Search vendor "Cisco" for product "Firepower Threat Defense" and version " < 6.3.0.6"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				>= 6.4.0 < 6.4.0.10 Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.4.0 < 6.4.0.10"		-		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"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				>= 6.6.0 < 6.6.1 Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.6.0 < 6.6.1"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.8.0 < 9.8.4.26 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.8.0 < 9.8.4.26"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.9.0 < 9.9.2.80 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.9.0 < 9.9.2.80"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.10.0 < 9.10.1.44 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.10.0 < 9.10.1.44"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.12.0 < 9.12.4.4 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.12.0 < 9.12.4.4"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.13.0 < 9.13.1.13 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.13.0 < 9.13.1.13"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.14.0 < 9.14.1.19 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.14.0 < 9.14.1.19"		-		Affected