CVE-2021-32764
YouTube Onebox Cross-Site Scripting Vulnerability in Discourse
Description
Discourse is an open-source discussion platform. In Discourse versions 2.7.5 and prior, parsing and rendering of YouTube Oneboxes can be susceptible to XSS attacks. This vulnerability only affects sites which have modified or disabled Discourse's default Content Security Policy. The issue is patched in `stable` version 2.7.6, `beta` version 2.8.0.beta3, and `tests-passed` version 2.8.0.beta3. As a workaround, ensure that the Content Security Policy is enabled, and has not been modified in a way which would make it more vulnerable to XSS attacks.
INFO
Published Date :
July 15, 2021, 9:15 p.m.
Last Modified :
Sept. 13, 2021, 2:44 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.2
Exploitability Score :
2.8
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-2021-32764.
| URL | Resource |
|---|---|
| https://github.com/discourse/discourse/security/advisories/GHSA-9x4c-29xg-56hw | Third Party Advisory |
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-32764 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-32764 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 [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Sep. 13, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:* versions up to (including) 2.7.5 OR *cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:* versions up to (including) 2.7.5 *cpe:2.3:a:discourse:discourse:2.8.0:beta1:*:*:*:*:*:* -
Initial Analysis by [email protected]
Jul. 27, 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:L/UI:N/S:U/C:L/I:L/A:N Changed Reference Type https://github.com/discourse/discourse/security/advisories/GHSA-9x4c-29xg-56hw No Types Assigned https://github.com/discourse/discourse/security/advisories/GHSA-9x4c-29xg-56hw Third Party Advisory Added CWE NIST CWE-79 Added CPE Configuration OR *cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:* versions up to (including) 2.7.5
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-32764 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-2021-32764
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} 0.00%
score
0.20649
percentile