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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