CVE-2021-35240

Stored XSS via Help Server settings

Severity Score

4.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A security researcher stored XSS via a Help Server setting. This affects customers using Internet Explorer, because they do not support 'rel=noopener'.

Un investigador de seguridad almacenó un ataque de tipo XSS por medio de una configuración del Servidor de Ayuda. Esto afecta a clientes usando Internet Explorer, porque no soportan "rel=noopener"

*Credits: SolarWinds would like to thank Kajetan Rostojek for reporting on the issue in a responsible manner.

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Adjacent

Attack Complexity

High

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-06-22 CVE Reserved
2021-08-31 CVE Published
2023-12-05 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

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

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://support.solarwinds.com/SuccessCenter/s/article/Mitigate-the-Stored-XSS-via-Help-Server-setting-CVE-2021-35240?language=en_US	2021-09-09

URL	Date	SRC
https://documentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htm	2021-09-09
https://support.solarwinds.com/SuccessCenter/s/article/Orion-Platform-2020-2-6-Hotfix-1?language=en_US	2021-09-09
https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35240	2021-09-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Solarwinds Search vendor "Solarwinds"	Orion Platform Search vendor "Solarwinds" for product "Orion Platform"	<= 2020.2.5 Search vendor "Solarwinds" for product "Orion Platform" and version " <= 2020.2.5"	-	Affected	in	Microsoft Search vendor "Microsoft"	Internet Explorer Search vendor "Microsoft" for product "Internet Explorer"	-	-	Safe