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Red Hat Security Advisory 2021-4042-01

Red Hat Security Advisory 2021-4042-01
Posted Nov 1, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4042-01 - Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. Issues addressed include a bypass vulnerability.

tags | advisory, bypass
systems | linux, redhat
advisories | CVE-2021-41133
SHA-256 | bf6c27df2c1dcb030b3926127ce23a66d9ef435f6beefaf6f6b02b4afdb281dc

Red Hat Security Advisory 2021-4042-01

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

Synopsis: Important: flatpak security update
Advisory ID: RHSA-2021:4042-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4042
Issue date: 2021-11-01
CVE Names: CVE-2021-41133
=====================================================================

1. Summary:

An update for flatpak is now available for Red Hat Enterprise Linux 8.

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 (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

3. Description:

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

Security Fix(es):

* flatpak: Sandbox bypass via recent VFS-manipulating syscalls
(CVE-2021-41133)

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/):

2012245 - CVE-2021-41133 flatpak: Sandbox bypass via recent VFS-manipulating syscalls

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
flatpak-1.8.5-4.el8_4.src.rpm

aarch64:
flatpak-1.8.5-4.el8_4.aarch64.rpm
flatpak-debuginfo-1.8.5-4.el8_4.aarch64.rpm
flatpak-debugsource-1.8.5-4.el8_4.aarch64.rpm
flatpak-libs-1.8.5-4.el8_4.aarch64.rpm
flatpak-libs-debuginfo-1.8.5-4.el8_4.aarch64.rpm
flatpak-session-helper-1.8.5-4.el8_4.aarch64.rpm
flatpak-session-helper-debuginfo-1.8.5-4.el8_4.aarch64.rpm
flatpak-tests-debuginfo-1.8.5-4.el8_4.aarch64.rpm

noarch:
flatpak-selinux-1.8.5-4.el8_4.noarch.rpm

ppc64le:
flatpak-1.8.5-4.el8_4.ppc64le.rpm
flatpak-debuginfo-1.8.5-4.el8_4.ppc64le.rpm
flatpak-debugsource-1.8.5-4.el8_4.ppc64le.rpm
flatpak-libs-1.8.5-4.el8_4.ppc64le.rpm
flatpak-libs-debuginfo-1.8.5-4.el8_4.ppc64le.rpm
flatpak-session-helper-1.8.5-4.el8_4.ppc64le.rpm
flatpak-session-helper-debuginfo-1.8.5-4.el8_4.ppc64le.rpm
flatpak-tests-debuginfo-1.8.5-4.el8_4.ppc64le.rpm

s390x:
flatpak-1.8.5-4.el8_4.s390x.rpm
flatpak-debuginfo-1.8.5-4.el8_4.s390x.rpm
flatpak-debugsource-1.8.5-4.el8_4.s390x.rpm
flatpak-libs-1.8.5-4.el8_4.s390x.rpm
flatpak-libs-debuginfo-1.8.5-4.el8_4.s390x.rpm
flatpak-session-helper-1.8.5-4.el8_4.s390x.rpm
flatpak-session-helper-debuginfo-1.8.5-4.el8_4.s390x.rpm
flatpak-tests-debuginfo-1.8.5-4.el8_4.s390x.rpm

x86_64:
flatpak-1.8.5-4.el8_4.x86_64.rpm
flatpak-debuginfo-1.8.5-4.el8_4.i686.rpm
flatpak-debuginfo-1.8.5-4.el8_4.x86_64.rpm
flatpak-debugsource-1.8.5-4.el8_4.i686.rpm
flatpak-debugsource-1.8.5-4.el8_4.x86_64.rpm
flatpak-libs-1.8.5-4.el8_4.i686.rpm
flatpak-libs-1.8.5-4.el8_4.x86_64.rpm
flatpak-libs-debuginfo-1.8.5-4.el8_4.i686.rpm
flatpak-libs-debuginfo-1.8.5-4.el8_4.x86_64.rpm
flatpak-session-helper-1.8.5-4.el8_4.x86_64.rpm
flatpak-session-helper-debuginfo-1.8.5-4.el8_4.i686.rpm
flatpak-session-helper-debuginfo-1.8.5-4.el8_4.x86_64.rpm
flatpak-tests-debuginfo-1.8.5-4.el8_4.i686.rpm
flatpak-tests-debuginfo-1.8.5-4.el8_4.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-2021-41133
https://access.redhat.com/security/updates/classification/#important
https://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4q

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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