Kernel - inet_diag: fix kernel-infoleak for UDP sockets
Summary
GSD-2021-1002671: inet_diag: fix kernel-infoleak for UDP sockets. Affects Kernel versions >= 3c4d05c8056724aff3abc20650807dd828fded54, < 7b5596e531253ce84213d9daa7120b71c9d83198. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionalities and acts as an interface between hardware and software. It manages system resources, facilitates communication between processes, and ensures security and stability. The inet_diag module is responsible for providing diagnostic information about network sockets. UDP (User Datagram Protocol) is a connectionless protocol that allows data to be sent over an IP network without establishing a dedicated connection. UDP sockets are vulnerable to a kernel-infoleak, which can potentially expose sensitive information to unauthorized entities.
Vulnerability Detail
The vulnerability in the inet_diag module allows an attacker to leak kernel information through UDP sockets. This can lead to the disclosure of sensitive data, such as memory addresses or other kernel-related information. The impact and attack plausibility of this vulnerability have not been proven yet. The vulnerability was introduced in version v3.3 of the Linux Kernel and is fixed in version v5.4.168 by commit 7b5596e531253ce84213d9daa7120b71c9d83198.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The Kernel vulnerability in the inet_diag module for UDP sockets can lead to the leakage of sensitive kernel information. It is crucial to update the Linux Kernel to version v5.4.168 or later to mitigate this vulnerability. Regularly applying security updates and staying informed about potential vulnerabilities is essential for maintaining the security and integrity of systems. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability allows an attacker to leak kernel information through UDP sockets, potentially exposing sensitive data.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the Vulert Playground will analyze it for open-source vulnerabilities, including this one.
There is no known exploit for this vulnerability at the moment. However, it is important to apply the recommended fix to mitigate any potential risks.
The exact attack vector and remote exploitability of this vulnerability have not been proven yet. However, it is always recommended to apply security updates to protect against potential remote attacks.
There are no reported incidents related to this vulnerability at the moment. However, it is important to stay updated with the latest security patches to prevent any potential exploitation.
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