CVE-2020-3373

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software IP Fragment Memory Leak Vulnerability

Severity Score

8.6

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability in the IP fragment-handling implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a memory leak on an affected device. This memory leak could prevent traffic from being processed through the device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper error handling when specific failures occur during IP fragment reassembly. An attacker could exploit this vulnerability by sending crafted, fragmented IP traffic to a targeted device. A successful exploit could allow the attacker to continuously consume memory on the affected device and eventually impact traffic, resulting in a DoS condition. The device could require a manual reboot to recover from the DoS condition. Note: This vulnerability applies to both IP Version 4 (IPv4) and IP Version 6 (IPv6) traffic.

Una vulnerabilidad en la implementación de manejo de fragmentos IP de Cisco Adaptive Security Appliance (ASA) Software y Cisco Firepower Threat Defense (FTD) Software, podría permitir a un atacante remoto no autenticado causar una pérdida de memoria en un dispositivo afectado. Esta pérdida de memoria podría impedir que el tráfico sea procesado por medio del dispositivo, resultando en una condición de denegación de servicio (DoS). La vulnerabilidad es debido al manejo inapropiado de errores cuando fallos específicos ocurren durante el reensamblaje del fragmento IP. Un atacante podría explotar esta vulnerabilidad mediante el envío de tráfico IP fragmentado y diseñado hacia un dispositivo objetivo. Una explotación con éxito podría permitir a un atacante consumir memoria continuamente en el dispositivo afectado y eventualmente impactar el tráfico, resultando en una condición de DoS. El dispositivo podría requerir un reinicio manual para recuperarse de la condición de DoS. Nota: Esta vulnerabilidad se aplica tanto al tráfico IP versión 4 (IPv4) como al tráfico IP versión 6 (IPv6)

*Credits: N/A

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

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-12-12 CVE Reserved
2020-10-21 CVE Published
2023-07-07 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption
CWE-401: Missing Release of Memory after Effective Lifetime

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-frag-memleak-mCtqdP9n	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"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				6.6.0.1 Search vendor "Cisco" for product "Firepower Threat Defense" and version "6.6.0.1"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				9.8.4.22 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version "9.8.4.22"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				9.8.4.25 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version "9.8.4.25"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				9.12.4.2 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version "9.12.4.2"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				9.12.4.3 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version "9.12.4.3"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				9.13.1.12 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version "9.13.1.12"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				9.14.1.15 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version "9.14.1.15"		-		Affected