Bug 1901634

Summary:	CVE-2020-27783 python-lxml: mXSS due to the use of improper parser [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
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, mhroncok, mizdebsk
Target Milestone:	---	Keywords:	Reopened, Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	python-lxml-4.6.2-1.fc34 python-lxml-4.6.2-1.eln105 python-lxml-4.5.1-3.fc33 python-lxml-4.4.1-5.fc32	Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-05-04 17:26:03 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:	1901633

Description Guilherme de Almeida Suckevicz 2020-11-25 17:06:51 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 Guilherme de Almeida Suckevicz 2020-11-25 17:06:53 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=1901633,1901634

# 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 Miro Hrončok 2020-12-01 23:28:15 UTC

Rawhide fix: https://src.fedoraproject.org/rpms/python-lxml/pull-request/4

This seem to be possible to backport to f33 and f32.

Comment 4 Fedora Update System 2020-12-02 12:50:34 UTC

FEDORA-2020-e8eac2edff has been pushed to the Fedora 34 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 5 Miro Hrončok 2020-12-02 12:53:59 UTC

Reopened for F33 and F32.

Comment 6 Fedora Update System 2020-12-02 13:05:37 UTC

FEDORA-2020-01eda01717 has been pushed to the Fedora ELN stable repository.
If problem still persists, please make note of it in this bug report.

Comment 7 Fedora Update System 2020-12-18 15:45:29 UTC

FEDORA-2020-0e055ea503 has been submitted as an update to Fedora 33. https://bodhi.fedoraproject.org/updates/FEDORA-2020-0e055ea503

Comment 8 Fedora Update System 2020-12-18 15:48:37 UTC

FEDORA-2020-307946cfb6 has been submitted as an update to Fedora 32. https://bodhi.fedoraproject.org/updates/FEDORA-2020-307946cfb6

Comment 9 Fedora Update System 2020-12-19 01:16:12 UTC

FEDORA-2020-0e055ea503 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-2020-0e055ea503`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-0e055ea503

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

Comment 10 Fedora Update System 2020-12-19 01:20:09 UTC

FEDORA-2020-307946cfb6 has been pushed to the Fedora 32 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2020-307946cfb6`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-307946cfb6

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

Comment 11 Fedora Update System 2021-01-14 01:37:12 UTC

FEDORA-2020-0e055ea503 has been pushed to the Fedora 33 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 12 Fedora Update System 2021-01-14 01:42:37 UTC

FEDORA-2020-307946cfb6 has been pushed to the Fedora 32 stable repository.
If problem still persists, please make note of it in this bug report.