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Red Hat 8.2 RHSA-2021-2237 Important: Polkit Local Escalation

red hat
Calendar Grey June 3, 2021
Dist Redhat Esm H88
A security bulletin has been issued regarding the polkit component update for Red Hat Enterprise Linux 8.2, which mitigates a critical vulnerability that allows for local privilege escalation.
An update for polkit 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

The polkit packages provide a component for controlling system-wide privileges. This component provides a uniform and organized way for non-privileged processes to communicate with privileged ones.
Security Fix(es):
* polkit: local privilege escalation using polkit_system_bus_name_get_creds_sync() (CVE-2021-3560)
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 Red Hat privilege escalation important local escalation system control polkit update

References

https://access.redhat.com/security/cve/CVE-2021-3560 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux BaseOS EUS (v. 8.2):
Source: polkit-0.115-11.el8_2.1.src.rpm
aarch64: polkit-0.115-11.el8_2.1.aarch64.rpm polkit-debuginfo-0.115-11.el8_2.1.aarch64.rpm polkit-debugsource-0.115-11.el8_2.1.aarch64.rpm polkit-devel-0.115-11.el8_2.1.aarch64.rpm polkit-libs-0.115-11.el8_2.1.aarch64.rpm polkit-libs-debuginfo-0.115-11.el8_2.1.aarch64.rpm
noarch: polkit-docs-0.115-11.el8_2.1.noarch.rpm
ppc64le: polkit-0.115-11.el8_2.1.ppc64le.rpm polkit-debuginfo-0.115-11.el8_2.1.ppc64le.rpm polkit-debugsource-0.115-11.el8_2.1.ppc64le.rpm polkit-devel-0.115-11.el8_2.1.ppc64le.rpm polkit-libs-0.115-11.el8_2.1.ppc64le.rpm polkit-libs-debuginfo-0.115-11.el8_2.1.ppc64le.rpm
s390x: polkit-0.115-11.el8_2.1.s390x.rpm polkit-debuginfo-0.115-11.el8_2.1.s390x.rpm polkit-debugsource-0.115-11.el8_2.1.s390x.rpm polkit-devel-0.115-11.el8_2.1.s390x.rpm polkit-libs-0.115-11.el8_2.1.s390x.rpm polkit-libs-debuginfo-0.115-11.el8_2.1.s390x.rpm
x86_64: polkit-0.115-11.el8_2.1.x86_64.rpm polkit-debuginfo-0.115-11.el8_2.1.i686.rpm polkit-debuginfo-0.115-11.el8_2.1.x86_64.rpm polkit-debugsource-0.115-11.el8_2.1.i686.rpm polkit-debugsource-0.115-11.el8_2.1.x86_64.rpm polkit-devel-0.115-11.el8_2.1.i686.rpm polkit-devel-0.115-11.el8_2.1.x86_64.rpm polkit-libs-0.115-11.el8_2.1.i686.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:2237-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2237
Issue date: 2021-06-03

Topic

An update for polkit 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 Red Hat privilege escalation important local escalation system control polkit update

Relevant Releases Architectures

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

Bugs Fixed

1961710 - CVE-2021-3560 polkit: local privilege escalation using polkit_system_bus_name_get_creds_sync()

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