CVE-2018-0428

Severity Score

6.7

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability in the account management subsystem of Cisco Web Security Appliance (WSA) could allow an authenticated, local attacker to elevate privileges to root. The attacker must authenticate with valid administrator credentials. The vulnerability is due to improper implementation of access controls. An attacker could exploit this vulnerability by authenticating to the device as a specific user to gain the information needed to elevate privileges to root in a separate login shell. A successful exploit could allow the attacker to escape the CLI subshell and execute system-level commands on the underlying operating system as root. Cisco Bug IDs: CSCvj93548.

Una vulnerabilidad en el subsistema de gestión de cuentas de Cisco Web Security Appliance (WSA) podría permitir que un atacante local autenticado eleve sus privilegios a root. El atacante debe autenticarse con credenciales válidas de administrador. Esta vulnerabilidad se debe a una implementación de controles de acceso incorrecta. Un atacante podría explotar esta vulnerabilidad autenticándose en el dispositivo como un usuario específico para obtener la información que necesita para elevar sus privilegios a root en un shell de inicio de sesión separado. Su explotación con éxito podría permitir que el atacante escape el subshell de la interfaz de línea de comandos y ejecute comandos a nivel de sistema en el sistema operativo subyacente como root. Cisco Bug IDs: CSCvj93548.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

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
2023-03-08 EPSS Updated
2024-09-17 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-269: Improper Privilege Management
CWE-284: Improper Access Control

CAPEC

References (3)

URL	Tag	Source
http://www.securityfocus.com/bid/105104	Third Party Advisory
http://www.securitytracker.com/id/1041536	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-wsa-escalation	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"				11.0.0-fcs-250 Search vendor "Cisco" for product "Web Security Appliance" and version "11.0.0-fcs-250"		-		Affected
Cisco Search vendor "Cisco"		Web Security Appliance Search vendor "Cisco" for product "Web Security Appliance"				11.5.0-fcs-000 Search vendor "Cisco" for product "Web Security Appliance" and version "11.5.0-fcs-000"		-		Affected
Cisco Search vendor "Cisco"		Web Security Appliance Search vendor "Cisco" for product "Web Security Appliance"				wsa10.0.0-959 Search vendor "Cisco" for product "Web Security Appliance" and version "wsa10.0.0-959"		-		Affected
Cisco Search vendor "Cisco"		Web Security Appliance Search vendor "Cisco" for product "Web Security Appliance"				wsa10.5.0-fcs-000 Search vendor "Cisco" for product "Web Security Appliance" and version "wsa10.5.0-fcs-000"		-		Affected