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====================================================================                   
Red Hat Security Advisory

Synopsis:          Important: flatpak security update
Advisory ID:       RHSA-2021:1074-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:1074
Issue date:        2021-04-06
CVE Names:         CVE-2021-21381
====================================================================
1. Summary:

An update for flatpak is now available for Red Hat Enterprise Linux 8.1
Extended Update Support.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AppStream EUS (v. 8.1) - aarch64, ppc64le, s390x, x86_64

3. Description:

Flatpak is a system for building, distributing, and running sandboxed
desktop applications on Linux.

Security Fix(es):

* flatpak: "file forwarding" feature can be used to gain unprivileged
access to files (CVE-2021-21381)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1936985 - CVE-2021-21381 flatpak: "file forwarding" feature can be used to gain unprivileged access to files

6. Package List:

Red Hat Enterprise Linux AppStream EUS (v. 8.1):

Source:
flatpak-1.0.9-4.el8_1.src.rpm

aarch64:
flatpak-1.0.9-4.el8_1.aarch64.rpm
flatpak-debuginfo-1.0.9-4.el8_1.aarch64.rpm
flatpak-debugsource-1.0.9-4.el8_1.aarch64.rpm
flatpak-libs-1.0.9-4.el8_1.aarch64.rpm
flatpak-libs-debuginfo-1.0.9-4.el8_1.aarch64.rpm

ppc64le:
flatpak-1.0.9-4.el8_1.ppc64le.rpm
flatpak-debuginfo-1.0.9-4.el8_1.ppc64le.rpm
flatpak-debugsource-1.0.9-4.el8_1.ppc64le.rpm
flatpak-libs-1.0.9-4.el8_1.ppc64le.rpm
flatpak-libs-debuginfo-1.0.9-4.el8_1.ppc64le.rpm

s390x:
flatpak-1.0.9-4.el8_1.s390x.rpm
flatpak-debuginfo-1.0.9-4.el8_1.s390x.rpm
flatpak-debugsource-1.0.9-4.el8_1.s390x.rpm
flatpak-libs-1.0.9-4.el8_1.s390x.rpm
flatpak-libs-debuginfo-1.0.9-4.el8_1.s390x.rpm

x86_64:
flatpak-1.0.9-4.el8_1.x86_64.rpm
flatpak-debuginfo-1.0.9-4.el8_1.i686.rpm
flatpak-debuginfo-1.0.9-4.el8_1.x86_64.rpm
flatpak-debugsource-1.0.9-4.el8_1.i686.rpm
flatpak-debugsource-1.0.9-4.el8_1.x86_64.rpm
flatpak-libs-1.0.9-4.el8_1.i686.rpm
flatpak-libs-1.0.9-4.el8_1.x86_64.rpm
flatpak-libs-debuginfo-1.0.9-4.el8_1.i686.rpm
flatpak-libs-debuginfo-1.0.9-4.el8_1.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2021-21381
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
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