CVE-2019-20437

Severity Score

6.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in WSO2 API Manager 2.6.0, WSO2 IS as Key Manager 5.7.0, and WSO2 Identity Server 5.8.0. When a custom claim dialect with an XSS payload is configured in the identity provider basic claim configuration, that payload gets executed, if a user picks up that dialect's URI as the provisioning claim in the advanced claim configuration of the same Identity Provider. The attacker also needs to have privileges to log in to the management console, and to add and update identity provider configurations.

Se detectó un problema en WSO2 API Manager versión 2.6.0, WSO2 IS as Key Manager versión 5.7.0 y WSO2 Identity Server versión 5.8.0. Cuando un dialecto de reclamo personalizado con una carga útil de tipo XSS es establecido en la configuración básica de reclamo del proveedor de identidad, esa carga útil es ejecutada, si un usuario recoge el URI de ese dialecto como el reclamo de aprovisionamiento en la configuración de reclamo avanzada del mismo proveedor de identidad. El atacante también necesita contar con privilegios para iniciar sesión en la consola de administración y para agregar y actualizar las configuraciones del proveedor de identidad.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-01-27 CVE Reserved
2020-01-27 CVE Published
2023-10-14 EPSS Updated
2024-08-05 CVE Updated
2024-08-05 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC
https://cybersecurityworks.com/zerodays/cve-2019-20437-wso2.html	2024-08-05
https://github.com/cybersecurityworks/Disclosed/issues/20	2024-08-05

URL	Date	SRC

URL	Date	SRC
https://docs.wso2.com/display/Security/Security+Advisory+WSO2-2019-0635	2022-11-10

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Wso2 Search vendor "Wso2"		Api Manager Search vendor "Wso2" for product "Api Manager"				2.6.0 Search vendor "Wso2" for product "Api Manager" and version "2.6.0"		-		Affected
Wso2 Search vendor "Wso2"		Identity Server Search vendor "Wso2" for product "Identity Server"				5.7.0 Search vendor "Wso2" for product "Identity Server" and version "5.7.0"		-		Affected
Wso2 Search vendor "Wso2"		Identity Server Search vendor "Wso2" for product "Identity Server"				5.8.0 Search vendor "Wso2" for product "Identity Server" and version "5.8.0"		-		Affected