Vulnerability in Kernel: Sanitize CAN ID checks in isotp_bind()
Summary
GSD-2022-1002127: can: isotp: sanitize CAN ID checks in isotp_bind(). Affects Kernel versions >= e057dd3fc20ffb3d7f150af46542a51b59b90127, < d72866a7f5326160d2a9d945a33eb6ef1883e25d. No fix is published. How to fix ↓
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Background
The Kernel is a fundamental component of the Linux operating system, responsible for managing system resources and providing an interface between hardware and software. It includes various subsystems, one of which is the Controller Area Network (CAN) subsystem. CAN is a communication protocol used in automotive and industrial applications. The vulnerability in question affects the isotp_bind() function within the CAN subsystem.
Vulnerability Detail
The isotp_bind() function in the Kernel's CAN subsystem lacks proper sanitization of CAN ID checks. This vulnerability allows an attacker to manipulate CAN IDs, potentially leading to unauthorized access or control over the communication between devices. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can apply access control mechanisms at the network level to restrict communication to trusted devices only. This can be achieved by configuring firewall rules or implementing network segmentation.
Conclusion
In conclusion, the vulnerability in the Kernel's CAN subsystem, specifically in the isotp_bind() function, allows for potential manipulation of CAN IDs. To mitigate this vulnerability, it is crucial to update the Linux Kernel to version v5.10.110 or later. Additionally, implementing access control mechanisms at the network level can provide an extra layer of security. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Kernel is a core component of the Linux operating system, responsible for managing system resources and providing an interface between hardware and software.
The CAN subsystem is a part of the Kernel that handles the Controller Area Network communication protocol used in automotive and industrial applications.
The isotp_bind() function is a specific function within the CAN subsystem that is affected by this vulnerability. It is responsible for binding a socket to a specific CAN ID.
This vulnerability could allow an attacker to manipulate CAN IDs, potentially gaining unauthorized access or control over the communication between devices. However, the actual impact and likelihood of successful attacks have not been proven.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.10.110 or later. This update includes the necessary fix to properly sanitize CAN ID checks in the isotp_bind() function.
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