Bug 2207982 (CVE-2021-27131) - CVE-2021-27131 moodle: stored xss
Summary: CVE-2021-27131 moodle: stored xss
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-27131
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2207984 2207983
Blocks:
TreeView+ depends on / blocked
 
Reported: 2023-05-17 14:10 UTC by Anten Skrabec
Modified: 2023-05-17 19:41 UTC (History)
0 users

Fixed In Version:
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Last Closed: 2023-05-17 19:41:07 UTC
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Description Anten Skrabec 2023-05-17 14:10:25 UTC 
Moodle 3.10.1 is vulnerable to persistent/stored cross-site scripting (XSS) due to the improper input sanitization on the "Additional HTML Section" via "Header and Footer" parameter in /admin/settings.php. This vulnerability is leading an attacker to steal admin and all user account cookies by storing the malicious XSS payload in Header and Footer.

https://github.com/p4nk4jv/CVEs-Assigned/blob/master/Moodle-3.10.1-CVE-2021-27131.md
https://github.com/moodle/moodle
Comment 1 Anten Skrabec 2023-05-17 14:10:41 UTC 
Created moodle tracking bugs for this issue:

Affects: epel-7 [bug 2207984]
Affects: fedora-all [bug 2207983]
Comment 2 Product Security DevOps Team 2023-05-17 19:41:06 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.
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