What is the severity of CVE-2021-43412?

CVE-2021-43412 has a high severity rating due to its potential for local privilege escalation leading to full root access.

How do I fix CVE-2021-43412?

To fix CVE-2021-43412, update to GNU Hurd version 0.9 20210404-9 or later.

What type of attack does CVE-2021-43412 enable?

CVE-2021-43412 enables local privilege escalation attacks through the exploitation of port use-after-free vulnerabilities.

Which versions of GNU Hurd are affected by CVE-2021-43412?

CVE-2021-43412 affects all versions of GNU Hurd before 0.9 20210404-9.

Is CVE-2021-43412 remote or local in nature?

CVE-2021-43412 is a local vulnerability, requiring access to the system to exploit.

Vulnerability/
CVE-2021-43412

high

7.8

CWE

416

7/11/2021

21/11/2024

CVE-2021-43412: Use After Free

First published: Sun Nov 07 2021(Updated: )

An issue was discovered in GNU Hurd before 0.9 20210404-9. libports accepts fake notification messages from any client on any port, which can lead to port use-after-free. This can be exploited for local privilege escalation 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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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-43412?
CVE-2021-43412 has a high severity rating due to its potential for local privilege escalation leading to full root access.
How do I fix CVE-2021-43412?
To fix CVE-2021-43412, update to GNU Hurd version 0.9 20210404-9 or later.
What type of attack does CVE-2021-43412 enable?
CVE-2021-43412 enables local privilege escalation attacks through the exploitation of port use-after-free vulnerabilities.
Which versions of GNU Hurd are affected by CVE-2021-43412?
CVE-2021-43412 affects all versions of GNU Hurd before 0.9 20210404-9.
Is CVE-2021-43412 remote or local in nature?
CVE-2021-43412 is a local vulnerability, requiring access to the system to exploit.

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source/NVD
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Frequently Asked Questions

What is the severity of CVE-2021-43412?
CVE-2021-43412 has a high severity rating due to its potential for local privilege escalation leading to full root access.
How do I fix CVE-2021-43412?
To fix CVE-2021-43412, update to GNU Hurd version 0.9 20210404-9 or later.
What type of attack does CVE-2021-43412 enable?
CVE-2021-43412 enables local privilege escalation attacks through the exploitation of port use-after-free vulnerabilities.
Which versions of GNU Hurd are affected by CVE-2021-43412?
CVE-2021-43412 affects all versions of GNU Hurd before 0.9 20210404-9.
Is CVE-2021-43412 remote or local in nature?
CVE-2021-43412 is a local vulnerability, requiring access to the system to exploit.