Bug 1903759 (CVE-2020-25815)

Summary: CVE-2020-25815 mediawiki: LogEventList::getFiltersDesc is insecurely using message text to build options names for HTML multi-select field
Product: [Other] Security Response Reporter: Dhananjay Arunesh <darunesh>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: aos-bugs, Axel.Thimm, bmontgom, eparis, jburrell, jokerman, mike, nstielau, puiterwijk, shurley, sponnaga
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: mediawiki-1.34.4, mediawiki-1.31.9 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-12-07 17:02:45 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: 1903760    
Bug Blocks: 1903781    

Description Dhananjay Arunesh 2020-12-02 18:22:10 UTC 
An issue was discovered in MediaWiki 1.32.x through 1.34.x before 1.34.4. LogEventList::getFiltersDesc is insecurely using message text to build options names for an HTML multi-select field. The relevant code should use escaped() instead of text().

References:
https://gerrit.wikimedia.org/g/mediawiki/core/+/ec76e14be658187544f07c1a249a047e1a75eaf8/includes/logging/LogEventsList.php#214
https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html
https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html
Comment 1 Dhananjay Arunesh 2020-12-02 18:23:23 UTC 
Created mediawiki tracking bugs for this issue:

Affects: fedora-all [bug 1903760]
Comment 2 Przemyslaw Roguski 2020-12-07 15:09:49 UTC 
Upstream commit:
https://gerrit.wikimedia.org/r/c/mediawiki/core/+/629728
Comment 4 Przemyslaw Roguski 2020-12-07 15:09:56 UTC 
External References:

https://phabricator.wikimedia.org/T256171
Comment 5 Przemyslaw Roguski 2020-12-07 16:50:22 UTC 
Statement:

OpenShift Container Platform (OCP) delivers the mediawiki package, but the vulnerable code is not bundled, therefore OCP is not affected by this flaw.
Comment 6 Product Security DevOps Team 2020-12-07 17:02:45 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-25815