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Red Hat Enterprise: RHSA-2021-0307-01 Important: Flatpak Escape Threat

red hat
Calendar Grey February 1, 2021
Dist Redhat Esm H88
Uncover the Critical flatpak security patch for Red Hat Enterprise Linux, tackling a vital sandbox breach vulnerability.
An update for flatpak is now available for Red Hat Enterprise Linux 8.2 Extended Update Support

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

Summary

Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux.
Security Fix(es):
* flatpak: sandbox escape via spawn portal (CVE-2021-21261)
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.

Topics%20covered

Topics Covered

security advisory security issue Red Hat security fix important Red Hat Enterprise important update RHEL system vulnerability sandbox escape flatpak

References

https://access.redhat.com/security/cve/CVE-2021-21261 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux AppStream EUS (v. 8.2):
Source: flatpak-1.6.2-4.el8_2.src.rpm
aarch64: flatpak-1.6.2-4.el8_2.aarch64.rpm flatpak-debuginfo-1.6.2-4.el8_2.aarch64.rpm flatpak-debugsource-1.6.2-4.el8_2.aarch64.rpm flatpak-libs-1.6.2-4.el8_2.aarch64.rpm flatpak-libs-debuginfo-1.6.2-4.el8_2.aarch64.rpm flatpak-session-helper-1.6.2-4.el8_2.aarch64.rpm flatpak-session-helper-debuginfo-1.6.2-4.el8_2.aarch64.rpm flatpak-tests-debuginfo-1.6.2-4.el8_2.aarch64.rpm
noarch: flatpak-selinux-1.6.2-4.el8_2.noarch.rpm
ppc64le: flatpak-1.6.2-4.el8_2.ppc64le.rpm flatpak-debuginfo-1.6.2-4.el8_2.ppc64le.rpm flatpak-debugsource-1.6.2-4.el8_2.ppc64le.rpm flatpak-libs-1.6.2-4.el8_2.ppc64le.rpm flatpak-libs-debuginfo-1.6.2-4.el8_2.ppc64le.rpm flatpak-session-helper-1.6.2-4.el8_2.ppc64le.rpm flatpak-session-helper-debuginfo-1.6.2-4.el8_2.ppc64le.rpm flatpak-tests-debuginfo-1.6.2-4.el8_2.ppc64le.rpm
s390x: flatpak-1.6.2-4.el8_2.s390x.rpm flatpak-debuginfo-1.6.2-4.el8_2.s390x.rpm flatpak-debugsource-1.6.2-4.el8_2.s390x.rpm flatpak-libs-1.6.2-4.el8_2.s390x.rpm flatpak-libs-debuginfo-1.6.2-4.el8_2.s390x.rpm flatpak-session-helper-1.6.2-4.el8_2.s390x.rpm flatpak-session-helper-debuginfo-1.6.2-4.el8_2.s390x.rpm flatpak-tests-debuginfo-1.6.2-4.el8_2.s390x.rpm
x86_64:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:0307-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0307
Issue date: 2021-02-01

Topic

An update for flatpak is now available for Red Hat Enterprise Linux 8.2Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security issue Red Hat security fix important Red Hat Enterprise important update RHEL system vulnerability sandbox escape flatpak

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream EUS (v. 8.2) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

1917430 - CVE-2021-21261 flatpak: sandbox escape via spawn portal

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