Bug 1939037 (CVE-2021-20280)

Summary: CVE-2021-20280 moodle: Stored XSS and blind SSRF possible via feedback answer text
Product: [Other] Security Response Reporter: Pedro Sampaio <psampaio>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED UPSTREAM QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: gwync, igor.raits, sergio
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: moodle 3.10.2, moodle 3.9.5, moodle 3.8.8, moodle 3.5.17 Doc Type: ---
Doc Text:
A flaw was found in moodle. Text-based feedback answers required additional sanitizing to prevent stored XSS and blind SSRF risks.
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-03-15 17:25:56 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: 1939038, 1939039    
Bug Blocks: 1939056    

Description Pedro Sampaio 2021-03-15 13:49:21 UTC
Text-based feedback answers required additional sanitizing to prevent stored XSS and blind SSRF risks.

References:

https://moodle.org/mod/forum/discuss.php?d=419651

Comment 1 Pedro Sampaio 2021-03-15 13:49:26 UTC
External References:

https://moodle.org/mod/forum/discuss.php?d=419651

Comment 2 Pedro Sampaio 2021-03-15 13:49:56 UTC
Created moodle tracking bugs for this issue:

Affects: epel-all [bug 1939038]
Affects: fedora-all [bug 1939039]

Comment 3 Product Security DevOps Team 2021-03-15 17:25:56 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.