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'.
INFO
Published Date :
Aug. 31, 2021, 4:15 p.m.
Last Modified :
Nov. 21, 2024, 6:12 a.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2021-35240
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | LOW | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Upgrade to SolarWinds Orion Platform 2020.2.6 HF1 or later.
- If upgrading is not immediately feasible, review the Internet Explorer settings.
Public PoC/Exploit Available at Github
CVE-2021-35240 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-35240.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-35240 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-35240
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-35240 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-35240 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://documentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htm Added Reference https://support.solarwinds.com/SuccessCenter/s/article/Mitigate-the-Stored-XSS-via-Help-Server-setting-CVE-2021-35240?language=en_US Added Reference https://support.solarwinds.com/SuccessCenter/s/article/Orion-Platform-2020-2-6-Hotfix-1?language=en_US Added Reference https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35240 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Sep. 09, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:S/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N Changed Reference Type https://documentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htm No Types Assigned https://documentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htm Product, Vendor Advisory Changed Reference Type https://support.solarwinds.com/SuccessCenter/s/article/Mitigate-the-Stored-XSS-via-Help-Server-setting-CVE-2021-35240?language=en_US No Types Assigned https://support.solarwinds.com/SuccessCenter/s/article/Mitigate-the-Stored-XSS-via-Help-Server-setting-CVE-2021-35240?language=en_US Patch, Vendor Advisory Changed Reference Type https://support.solarwinds.com/SuccessCenter/s/article/Orion-Platform-2020-2-6-Hotfix-1?language=en_US No Types Assigned https://support.solarwinds.com/SuccessCenter/s/article/Orion-Platform-2020-2-6-Hotfix-1?language=en_US Mitigation, Vendor Advisory Changed Reference Type https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35240 No Types Assigned https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35240 Vendor Advisory Added CWE NIST CWE-79 Added CPE Configuration AND OR *cpe:2.3:a:solarwinds:orion_platform:*:*:*:*:*:*:*:* versions up to (including) 2020.2.5 OR cpe:2.3:a:microsoft:internet_explorer:-:*:*:*:*:*:*:*
Vulnerability Scoring Details
Base CVSS Score: 6.5
Base CVSS Score: 3.5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.25 }} 0.08%
score
0.48071
percentile