CVE-2018-0410

Severity Score

8.6

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliances could allow an unauthenticated, remote attacker to exhaust system memory and cause a denial of service (DoS) condition on an affected system. The vulnerability exists because the affected software improperly manages memory resources for TCP connections to a targeted device. An attacker could exploit this vulnerability by establishing a high number of TCP connections to the data interface of an affected device via IPv4 or IPv6. A successful exploit could allow the attacker to exhaust system memory, which could cause the system to stop processing new connections and result in a DoS condition. System recovery may require manual intervention. Cisco Bug IDs: CSCvf36610.

Una vulnerabilidad en la funcionalidad de proxy web de Cisco AsyncOS Software para Cisco Web Security Appliances podría permitir que un atacante remoto no autenticado agote la memoria del sistema y provoque una condición de denegación de servicio (DoS) en un sistema afectado. La vulnerabilidad existe debido a que el software afectado gestiona de forma incorrecta los recursos de memoria para las conexiones TCP en un dispositivo objetivo. Un atacante podría explotar esta vulnerabilidad estableciendo un alto número de conexiones TCP en la interfaz de datos de un dispositivo afectado mediante IPv4 o IPv6. Su explotación con éxito podría permitir que el atacante agote la memoria del sistema, lo que podría provocar que el sistema deje de procesar nuevas conexiones y desemboque en una condición de denegación de servicio (DoS). La recuperación del sistema podría requerir la intervención manual. Cisco Bug IDs: CSCvf36610.

*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
2018-08-15 CVE Published
2024-02-15 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption

CAPEC

References (3)

URL	Tag	Source
http://www.securityfocus.com/bid/105098	Third Party Advisory
http://www.securitytracker.com/id/1041535	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-wsa-dos	2019-10-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Web Security Appliance Search vendor "Cisco" for product "Web Security Appliance"				9.1.1-074 Search vendor "Cisco" for product "Web Security Appliance" and version "9.1.1-074"		-		Affected
Cisco Search vendor "Cisco"		Web Security Appliance Search vendor "Cisco" for product "Web Security Appliance"				9.1.2-010 Search vendor "Cisco" for product "Web Security Appliance" and version "9.1.2-010"		-		Affected
Cisco Search vendor "Cisco"		Web Security Appliance Search vendor "Cisco" for product "Web Security Appliance"				9.1.2-022 Search vendor "Cisco" for product "Web Security Appliance" and version "9.1.2-022"		-		Affected
Cisco Search vendor "Cisco"		Web Security Appliance Search vendor "Cisco" for product "Web Security Appliance"				9.1.2-039 Search vendor "Cisco" for product "Web Security Appliance" and version "9.1.2-039"		-		Affected
Cisco Search vendor "Cisco"		Web Security Appliance Search vendor "Cisco" for product "Web Security Appliance"				10.1.0-204 Search vendor "Cisco" for product "Web Security Appliance" and version "10.1.0-204"		-		Affected
Cisco Search vendor "Cisco"		Web Security Appliance Search vendor "Cisco" for product "Web Security Appliance"				10.1.1-235 Search vendor "Cisco" for product "Web Security Appliance" and version "10.1.1-235"		-		Affected
Cisco Search vendor "Cisco"		Web Security Appliance Search vendor "Cisco" for product "Web Security Appliance"				10.5.1-270 Search vendor "Cisco" for product "Web Security Appliance" and version "10.5.1-270"		-		Affected
Cisco Search vendor "Cisco"		Web Security Appliance Search vendor "Cisco" for product "Web Security Appliance"				10.5.1-296 Search vendor "Cisco" for product "Web Security Appliance" and version "10.5.1-296"		-		Affected
Cisco Search vendor "Cisco"		Web Security Appliance Search vendor "Cisco" for product "Web Security Appliance"				10.5.2-042 Search vendor "Cisco" for product "Web Security Appliance" and version "10.5.2-042"		-		Affected
Cisco Search vendor "Cisco"		Web Security Appliance Search vendor "Cisco" for product "Web Security Appliance"				11.0.0-641 Search vendor "Cisco" for product "Web Security Appliance" and version "11.0.0-641"		-		Affected