CVE-2021-35240

Stored XSS via Help Server settings

Description

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

Remediation

Solution:

  • SolarWinds recommends installing 2020.2.6 Hotfix 1 for the Orion Platform as soon as it becomes available. All customers should implement all the recommendations from the Orion Secure Configuration Guide.

Workaround:

  • If you are unable to upgrade immediately. See SolarWinds Knowledgebase Article Below: https://support.solarwinds.com/SuccessCenter/s/article/Mitigate-the-Stored-XSS-via-Help-Server-setting-CVE-2021-35240?language=en_US

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.17%
Vendor Advisory solarwinds.com Vendor Advisory solarwinds.com Vendor Advisory solarwinds.com Vendor Advisory solarwinds.com
Affected: SolarWinds Orion Platform
Published at:
Updated at:

References

Link Tags
https://documentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htm product vendor advisory
https://support.solarwinds.com/SuccessCenter/s/article/Orion-Platform-2020-2-6-Hotfix-1?language=en_US mitigation vendor advisory
https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35240 vendor advisory
https://support.solarwinds.com/SuccessCenter/s/article/Mitigate-the-Stored-XSS-via-Help-Server-setting-CVE-2021-35240?language=en_US patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-35240?
CVE-2021-35240 has been scored as a medium severity vulnerability.
How to fix CVE-2021-35240?
To fix CVE-2021-35240: SolarWinds recommends installing 2020.2.6 Hotfix 1 for the Orion Platform as soon as it becomes available. All customers should implement all the recommendations from the Orion Secure Configuration Guide.
Is CVE-2021-35240 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-35240 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-35240?
CVE-2021-35240 affects SolarWinds Orion Platform.
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