What is the severity of CVE-2021-43413?

CVE-2021-43413 is considered a critical vulnerability due to the potential for unauthorized root access.

How do I fix CVE-2021-43413?

To fix CVE-2021-43413, upgrade to GNU Hurd version 0.9 20210404-9 or later.

What are the risks associated with CVE-2021-43413?

The risks associated with CVE-2021-43413 include the ability for any user to modify files they can read, potentially compromising the entire system.

Who is affected by CVE-2021-43413?

CVE-2021-43413 affects all users of GNU Hurd versions prior to 0.9 20210404-9.

What does CVE-2021-43413 exploit?

CVE-2021-43413 exploits a shared pager port among users who mmap files, allowing for unauthorized file modifications.

Vulnerability/
CVE-2021-43413

critical

7/11/2021

21/11/2024

CVE-2021-43413

First published: Sun Nov 07 2021(Updated: )

An issue was discovered in GNU Hurd before 0.9 20210404-9. A single pager port is shared among everyone who mmaps a file, allowing anyone to modify any files that they can read. This can be trivially exploited to get full root access.

Credit: cve@mitre.org cve@mitre.org

Affected Software	Affected Version	How to fix
GNU Hurd	<0.9.20210404-9
	<0.9.20210404-9

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Frequently Asked Questions

What is the severity of CVE-2021-43413?
CVE-2021-43413 is considered a critical vulnerability due to the potential for unauthorized root access.
How do I fix CVE-2021-43413?
To fix CVE-2021-43413, upgrade to GNU Hurd version 0.9 20210404-9 or later.
What are the risks associated with CVE-2021-43413?
The risks associated with CVE-2021-43413 include the ability for any user to modify files they can read, potentially compromising the entire system.
Who is affected by CVE-2021-43413?
CVE-2021-43413 affects all users of GNU Hurd versions prior to 0.9 20210404-9.
What does CVE-2021-43413 exploit?
CVE-2021-43413 exploits a shared pager port among users who mmap files, allowing for unauthorized file modifications.

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