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Red Hat: RHSA-2022:0272 Important: polkit Local Escalation Issue

red hat
Calendar Grey January 25, 2022
Dist Redhat Esm H88
Critical polkit security patch for Red Hat Enterprise Linux 7.4 mitigating local privilege escalation vulnerabilities. Full report enclosed.
An update for polkit is now available for Red Hat Enterprise Linux 7.4 Advanced 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 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 red hat critical important local escalation 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 Server AUS (v. 7.4):
Source: polkit-0.112-12.el7_4.2.src.rpm
noarch: polkit-docs-0.112-12.el7_4.2.noarch.rpm
x86_64: polkit-0.112-12.el7_4.2.i686.rpm polkit-0.112-12.el7_4.2.x86_64.rpm polkit-debuginfo-0.112-12.el7_4.2.i686.rpm polkit-debuginfo-0.112-12.el7_4.2.x86_64.rpm polkit-devel-0.112-12.el7_4.2.i686.rpm polkit-devel-0.112-12.el7_4.2.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


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:0272-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:0272
Issue date: 2022-01-25

Topic

An update for polkit is now available for Red Hat Enterprise Linux 7.4Advanced 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 update red hat critical important local escalation polkit

Relevant Releases Architectures

Red Hat Enterprise Linux Server AUS (v. 7.4) - 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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