Bug 2080988

Summary:	CVE-2021-21897 librecad: libdxflib: heap-based buffer overflow in the DL_Dxf:handleLWPolylineData function [epel-all]
Product:	[Fedora] Fedora EPEL	Reporter:	Marian Rehak <mrehak>
Component:	librecad	Assignee:	Tom "spot" Callaway <spotrh>
Status:	NEW ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	epel8	CC:	bugzilla.rh, hobbes1069, spotrh
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:		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:	2080983

Description Marian Rehak 2022-05-02 14:12:15 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 epel-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 EPEL. 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 2022-05-02 14:12:16 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=2080983,2080988

# 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 Armin (LordOfBikes) 2022-05-22 10:35:53 UTC

As LibreCAD maintainer I can say, that LibreCAD isn't hit by CVE-2021-21897.
CVE-2021-21897 is about a vulnerability in dxflib, which is used by QCAD.

LibreCAD uses its own library libdxfrw (https://github.com/LibreCAD/libdxfrw). 

libdxfrw related CVEs were CVE-2021-21898, CVE-2021-21899 and CVE-2021-21900.
All three CVEs are fixed in libdxfrw and also in LibreCAD in version 2.2.0-rc3, which is used for Fedora packages:
https://github.com/LibreCAD/libdxfrw/commit/ba3fa95648bef948e008dfbdd31a4d21badd71f0
https://github.com/LibreCAD/libdxfrw/commit/6417118874333309aa10c4e59f954c3905a6e8b5
https://github.com/LibreCAD/libdxfrw/commit/fcd977cc7f8f6cc7f012e5b72d33cf7d77b3fa69

https://github.com/LibreCAD/LibreCAD/commit/33b34d4a4acb7a681462626ef442013528c69faa

Copy of bug 2080987