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Red Hat Enterprise Linux 7 RHSA-2022-0274-03 Critical Polkit Privilege Fix

red hat
Calendar Grey January 25, 2022
Dist Redhat Esm H88
A critical polkit security enhancement for Red Hat Enterprise Linux 7 tackles vulnerabilities related to local privilege escalation.
An update for polkit is now available for Red Hat Enterprise Linux 7

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 in pkexec due to incorrect handling of argument vector (CVE-2021-4034)
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 update privilege escalation important red hat enterprise polkit

References

https://access.redhat.com/security/cve/CVE-2021-4034 https://access.redhat.com/security/updates/classification#important https://access.redhat.com/security/vulnerabilities/RHSB-2022-001

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: polkit-0.112-26.el7_9.1.src.rpm
x86_64: polkit-0.112-26.el7_9.1.i686.rpm polkit-0.112-26.el7_9.1.x86_64.rpm polkit-debuginfo-0.112-26.el7_9.1.i686.rpm polkit-debuginfo-0.112-26.el7_9.1.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
noarch: polkit-docs-0.112-26.el7_9.1.noarch.rpm
x86_64: polkit-debuginfo-0.112-26.el7_9.1.i686.rpm polkit-debuginfo-0.112-26.el7_9.1.x86_64.rpm polkit-devel-0.112-26.el7_9.1.i686.rpm polkit-devel-0.112-26.el7_9.1.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: polkit-0.112-26.el7_9.1.src.rpm
x86_64: polkit-0.112-26.el7_9.1.i686.rpm polkit-0.112-26.el7_9.1.x86_64.rpm polkit-debuginfo-0.112-26.el7_9.1.i686.rpm polkit-debuginfo-0.112-26.el7_9.1.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
noarch: polkit-docs-0.112-26.el7_9.1.noarch.rpm
x86_64: polkit-debuginfo-0.112-26.el7_9.1.i686.rpm polkit-debuginfo-0.112-26.el7_9.1.x86_64.rpm polkit-devel-0.112-26.el7_9.1.i686.rpm polkit-devel-0.112-26.el7_9.1.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: polkit-0.112-26.el7_9.1.src.rpm
noarch: polkit-docs-0.112-26.el7_9.1.noarch.rpm
ppc64: polkit-0.112-26.el7_9.1.ppc.rpm polkit-0.112-26.el7_9.1.ppc64.rpm polkit-debuginfo-0.112-26.el7_9.1.ppc.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:0274-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:0274
Issue date: 2022-01-25

Topic

An update for polkit is now available for Red Hat Enterprise Linux 7.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 update privilege escalation important red hat enterprise polkit

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Bugs Fixed

2025869 - CVE-2021-4034 polkit: Local privilege escalation in pkexec due to incorrect handling of argument vector

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