Bug 2126857 (CVE-2021-36568)

Summary:	CVE-2021-36568 www-apps/moodle: XSS via crafted topic fields
Product:	[Other] Security Response	Reporter:	ybuenos
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	ajak, gwync, igor.raits
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-11-27 04:27:42 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2126858
Bug Blocks:

Description ybuenos 2022-09-14 15:00:48 UTC

In certain Moodle products after creating a course, it is possible to add in a arbitrary "Topic" a resource, in this case a "Database" with the type "Text" where its values "Field name" and "Field description" are vulnerable to Cross Site Scripting Stored(XSS). This affects Moodle 3.11 and Moodle 3.10.4 and Moodle 3.9.7.

https://blog.hackingforce.com.br/en/cve-2021-36568/
https://drive.google.com/drive/folders/1_fO4BKpmD3avGYHSzvIXWs5owqVYgB1s?usp=sharing

Comment 1 ybuenos 2022-09-14 15:01:05 UTC

Created moodle tracking bugs for this issue:

Affects: fedora-all [bug 2126858]

Comment 2 Product Security DevOps Team 2022-11-27 04:27:41 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.

Comment 3 John Helmert III 2022-11-30 00:49:11 UTC

(In reply to Product Security DevOps Team from comment #2)
> This CVE Bugzilla entry is for community support informational purposes only
> as it does not affect a package in a commercially supported Red Hat product.
> Refer to the dependent bugs for status of those individual community
> products.

How did you come to this conclusion? I don't think any fix exists, and Moodle is indeed packaged by Red Hat products.