Bug 1785377

Summary:	CVE-2017-18640 snakeyaml: the alias feature allows entity expansion during a load operation [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	snakeyaml	Assignee:	Severin Gehwolf <sgehwolf>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	31	CC:	ascheel, decathorpe, jaromir.capik, java-sig-commits, mizdebsk, mo, sgehwolf, stewardship-sig
Target Milestone:	---	Keywords:	Reopened, Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	snakeyaml-1.26-1.fc32 snakeyaml-1.26-1.fc31	Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-04-25 02:25:21 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:	1785376

Description Guilherme de Almeida Suckevicz 2019-12-19 19:24:46 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 2019-12-19 19:24:48 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=1785376,1785377

# 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 Alex Scheel 2020-02-19 12:25:21 UTC

Upstream has marked this as WONTFIX; see https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-18640 for references.

Comment 3 Severin Gehwolf 2020-04-15 12:49:10 UTC

Upgrading to 1.26 will fix this. I'll work on that.

Comment 4 Severin Gehwolf 2020-04-15 13:01:19 UTC

https://src.fedoraproject.org/rpms/snakeyaml/pull-request/5

Comment 5 Fedora Update System 2020-04-17 11:10:26 UTC

FEDORA-2020-599514b47e has been submitted as an update to Fedora 32. https://bodhi.fedoraproject.org/updates/FEDORA-2020-599514b47e

Comment 6 Fedora Update System 2020-04-17 11:10:58 UTC

FEDORA-2020-23012fafbc has been submitted as an update to Fedora 31. https://bodhi.fedoraproject.org/updates/FEDORA-2020-23012fafbc

Comment 7 Fedora Update System 2020-04-17 22:07:05 UTC

FEDORA-2020-599514b47e 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-2020-599514b47e`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-599514b47e

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

Comment 8 Fedora Update System 2020-04-17 23:47:16 UTC

FEDORA-2020-23012fafbc has been pushed to the Fedora 31 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-2020-23012fafbc`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-23012fafbc

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

Comment 9 Fedora Update System 2020-04-25 02:25:21 UTC

FEDORA-2020-599514b47e has been pushed to the Fedora 32 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 10 Fedora Update System 2020-04-26 02:48:21 UTC

FEDORA-2020-23012fafbc has been pushed to the Fedora 31 stable repository.
If problem still persists, please make note of it in this bug report.