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Fedora 35: 2022-da040e6b94 Important: Polkit Argv Overflow Exploit

fedora
Calendar Grey January 26, 2022
Dist Fedora Esm H88
Uncover Fedora 35's security notice regarding an argv buffer overflow that leads to local privilege escalation vulnerabilities in polkit.
pkexec: argv overflow results in local privilege esc.

Summary

polkit is a toolkit for defining and handling authorizations. It is

used for allowing unprivileged processes to speak to privileged

processes.

pkexec: argv overflow results in local privilege esc.

* Tue Jan 25 2022 Jan Rybar - 0.120-1.1

- pkexec: argv overflow results in local privilege esc.

- Resolves: CVE-2021-4034

[ 1 ] Bug #2045563 - CVE-2021-4034 polkit: Local privilege escalation in pkexec due to incorrect handling of argument vector [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=2045563

su -c 'dnf upgrade --advisory FEDORA-2022-da040e6b94' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

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Change Log

References

Update Instructions

Severity
important
Lowest
Low
Medium
High
Critical

Product: Fedora 35
Version: 0.120
Release: 1.fc35.1
Summary: An authorization framework

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