CVE-2018-0228

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 ingress flow creation functionality of Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause the CPU to increase upwards of 100% utilization, causing a denial of service (DoS) condition on an affected system. The vulnerability is due to incorrect handling of an internal software lock that could prevent other system processes from getting CPU cycles, causing a high CPU condition. An attacker could exploit this vulnerability by sending a steady stream of malicious IP packets that can cause connections to be created on the targeted device. A successful exploit could allow the attacker to exhaust CPU resources, resulting in a DoS condition during which traffic through the device could be delayed. This vulnerability applies to either IPv4 or IPv6 ingress traffic. This vulnerability affects Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) Software that is running on the following Cisco products: 3000 Series Industrial Security Appliances (ISA), ASA 5500 Series Adaptive Security Appliances, ASA 5500-X Series Next-Generation Firewalls, ASA Services Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers, Adaptive Security Virtual Appliances (ASAv), Firepower 2100 Series Security Appliances, Firepower 4110 Security Appliances, Firepower 9300 ASA Security Modules. Cisco Bug IDs: CSCvf63718.

Una vulnerabilidad en la funcionalidad de creación de flujo de entrada de Cisco Adaptive Security Appliance (ASA) podría permitir que un atacante remoto no autenticado provoque que la CPU aumente su uso por encima del 100%, provocando una condición de denegación de servicio (DoS) en un sistema afectado. La vulnerabilidad se debe a la manipulación incorrecta de un bloqueo de software interno que podría evitar que otros procesos del sistema obtengan ciclos de CPU, provocando una condición de CPU alta. Un atacante podría explotar esta vulnerabilidad enviando un flujo constante de paquetes de IP maliciosos que podrían provocar que se creen conexiones en el dispositivo objetivo. Si se explota esta vulnerabilidad con éxito, el atacante podría agota los recursos de la CPU, lo que resultaría en una condición de denegación de servicio (DoS) durante la cual el tráfico del dispositivo podría retrasarse. Esta vulnerabilidad aplica al tráfico de entrada IPv4 o IPv6. Esta vulnerabilidad afecta a las versiones de Cisco Adaptive Security Appliance (ASA) y Firepower Threat Defense (FTD) Software que se ejecutan en los siguientes productos de Cisco: 3000 Series Industrial Security Appliances (ISA), ASA 5500 Series Adaptive Security Appliances, ASA 5500-X Series Next-Generation Firewalls, ASA Services Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers, Adaptive Security Virtual Appliances (ASAv), Firepower 2100 Series Security Appliances, Firepower 4110 Security Appliances y Firepower 9300 ASA Security Modules. Cisco Bug IDs: CSCvf63718.

*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

2017-11-27 CVE Reserved
2018-04-19 CVE Published
2024-02-02 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-667: Improper Locking

CAPEC

References (4)

URL	Tag	Source
http://www.securityfocus.com/bid/104220	Third Party Advisory
http://www.securitytracker.com/id/1040724	Third Party Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-18-184-01	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-asa2	2023-08-15

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 Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.1 < 9.1.7.20 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.1 < 9.1.7.20"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.3 < 9.4.4.13 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.3 < 9.4.4.13"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.5 < 9.6.3.17 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.5 < 9.6.3.17"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.7 < 9.7.1.16 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.7 < 9.7.1.16"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.8 < 9.8.2.14 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.8 < 9.8.2.14"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.2 < 9.2.4.27 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.2 < 9.2.4.27"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.9 < 9.9.1 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.9 < 9.9.1"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				98.1\(12.187\) Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version "98.1\(12.187\)"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				>= 6.0 < 6.1.0.6 Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.0 < 6.1.0.6"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				>= 6.2.0 < 6.2.0.5 Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.2.0 < 6.2.0.5"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				>= 6.2.1 < 6.2.2.2 Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.2.1 < 6.2.2.2"		-		Affected