Bug 1941535

Summary:	CVE-2021-28957 python-lxml: missing input sanitization for formaction HTML5 attributes may lead to XSS [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Marian Rehak <mrehak>
Component:	python-lxml	Assignee:	Mikolaj Izdebski <mizdebsk>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	high
Version:	33	CC:	igor.raits, me, mizdebsk
Target Milestone:	---	Keywords:	Reopened, Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	python-lxml-4.6.3-1.fc35 python-lxml-4.6.3-1.fc34	Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-06-04 19:52:02 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:	1941534

Description Marian Rehak 2021-03-22 10:37:48 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 Marian Rehak 2021-03-22 10:37:51 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=high

# testing, stable
request=testing

# Bug numbers: 1234,9876
bugs=1941534,1941535

# 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 3 Fedora Update System 2021-05-24 17:58:29 UTC

FEDORA-2021-cd730d2e04 has been submitted as an update to Fedora 35. https://bodhi.fedoraproject.org/updates/FEDORA-2021-cd730d2e04

Comment 4 Fedora Update System 2021-05-24 17:59:57 UTC

FEDORA-2021-cd730d2e04 has been pushed to the Fedora 35 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 5 Fedora Update System 2021-05-26 10:23:26 UTC

FEDORA-2021-4cdb0f68c7 has been submitted as an update to Fedora 33. https://bodhi.fedoraproject.org/updates/FEDORA-2021-4cdb0f68c7

Comment 6 Fedora Update System 2021-05-26 10:25:38 UTC

FEDORA-2021-28723f9670 has been submitted as an update to Fedora 34. https://bodhi.fedoraproject.org/updates/FEDORA-2021-28723f9670

Comment 7 Fedora Update System 2021-05-27 01:31:55 UTC

FEDORA-2021-28723f9670 has been pushed to the Fedora 34 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-28723f9670`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-28723f9670

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

Comment 8 Fedora Update System 2021-05-27 01:39:23 UTC

FEDORA-2021-4cdb0f68c7 has been pushed to the Fedora 33 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-4cdb0f68c7`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-4cdb0f68c7

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

Comment 9 Fedora Update System 2021-05-28 01:00:02 UTC

FEDORA-2021-28723f9670 has been pushed to the Fedora 34 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 10 Fedora Update System 2021-06-04 01:02:57 UTC

FEDORA-2021-4cdb0f68c7 has been pushed to the Fedora 33 stable repository.
If problem still persists, please make note of it in this bug report.