Bug 1899533

Summary:	CVE-2020-25698 moodle: Teacher is able to unenrol users without permission using course restore [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Michael Kaplan <mkaplan>
Component:	moodle	Assignee:	Gwyn Ciesla <gwync>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	33	CC:	clairemiller069, gwync, igor.raits, nicholaus1maggiom6, sergio
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	moodle-3.9.3-1.fc33 moodle-3.8.6-1.fc32	Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-11-28 02:03:12 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:
Bug Blocks:	1895419

Description Michael Kaplan 2020-11-19 13:57:15 UTC

This is an automatically created tracking bug!  It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.

For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.

For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs

When submitting as an update, use the fedpkg template provided in the next
comment(s).  This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.

Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.

NOTE: this issue affects multiple supported versions of Fedora. While only
one tracking bug has been filed, please correct all affected versions at
the same time.  If you need to fix the versions independent of each other,
you may clone this bug as appropriate.

Comment 1 Michael Kaplan 2020-11-19 13:57:17 UTC

Use the following template to for the 'fedpkg update' request to submit an
update for this issue as it contains the top-level parent bug(s) as well as
this tracking bug.  This will ensure that all associated bugs get updated
when new packages are pushed to stable.

=====

# bugfix, security, enhancement, newpackage (required)
type=security

# low, medium, high, urgent (required)
severity=medium

# testing, stable
request=testing

# Bug numbers: 1234,9876
bugs=1895419,1899533

# Description of your update
notes=Security fix for [PUT CVEs HERE]

# Enable request automation based on the stable/unstable karma thresholds
autokarma=True
stable_karma=3
unstable_karma=-3

# Automatically close bugs when this marked as stable
close_bugs=True

# Suggest that users restart after update
suggest_reboot=False

======

Additionally, you may opt to use the bodhi web interface to submit updates:

https://bodhi.fedoraproject.org/updates/new

Comment 2 Fedora Update System 2020-11-19 15:12:00 UTC

FEDORA-2020-304aa2c365 has been submitted as an update to Fedora 33. https://bodhi.fedoraproject.org/updates/FEDORA-2020-304aa2c365

Comment 3 Fedora Update System 2020-11-19 15:12:01 UTC

FEDORA-2020-db73e37548 has been submitted as an update to Fedora 32. https://bodhi.fedoraproject.org/updates/FEDORA-2020-db73e37548

Comment 4 Fedora Update System 2020-11-20 02:15:02 UTC

FEDORA-2020-304aa2c365 has been pushed to the Fedora 33 testing repository.
In short time you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2020-304aa2c365`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-304aa2c365

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2020-11-20 02:16:54 UTC

FEDORA-2020-db73e37548 has been pushed to the Fedora 32 testing repository.
In short time you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2020-db73e37548`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-db73e37548

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 6 Fedora Update System 2020-11-28 02:03:12 UTC

FEDORA-2020-304aa2c365 has been pushed to the Fedora 33 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 7 Fedora Update System 2020-11-28 02:10:19 UTC

FEDORA-2020-db73e37548 has been pushed to the Fedora 32 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 8 Tom Watts 2023-12-22 11:48:26 UTC Comment hidden (spam)

We are getting a similar error in our system where the teacher can delete without permission. I tried several commands from their suggested list and overall it almost works. But I still get the problem if Fedora uses Flatpaks updates. Some students had to turn to https://edubirdie.com/assignment-help because the teacher deleted their course. This will work as a temporary solution, but permanently, some corrections will need to be made. I tried revising the permissions and user roles configuration, but it didn't help.

Comment 9 claire miller 2024-01-13 12:46:06 UTC Comment hidden (spam)

System error allowing unauthorized deletion by teachers remains unresolved in Fedora with Flatpaks updates. Commands from suggested list partially effective. Still facing the date issue in https://www.expertsmind.com/questions-answers/archive.aspx. Seems to happen specifically when Flatpaks updates are involved.