Bluetooth: SMP: Fail if remote and local public keys are identical
Summary
GSD-2021-1000526: Bluetooth: SMP: Fail if remote and local public keys are identical. Affects Kernel versions >= bfe01a5ba2490f299e1d2d5508cbbbadd897bbe9, < 6555a006b21ab49090b9a7b36e92d0421db19328. No fix is published. How to fix ↓
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Background
The vulnerability affects the Kernel package in the Linux ecosystem. The Kernel is the core component of the operating system that manages system resources and provides an interface for software to interact with the hardware. It is responsible for tasks such as process management, memory management, and device drivers. The vulnerability specifically impacts the Bluetooth Secure Simple Pairing (SMP) protocol, which is used for establishing secure connections between Bluetooth devices.
Vulnerability Detail
The vulnerability occurs when the remote and local public keys in the Bluetooth SMP protocol are identical. This can lead to potential security risks, although the actual impact and attack plausibility have not been proven yet. The vulnerability was introduced in version v3.17 of the Linux Kernel and has been fixed in version v4.9.270. It is important to note that this vulnerability is specific to the Bluetooth SMP protocol and does not affect other aspects of the Kernel or Bluetooth functionality.
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. The recommended approach is to apply the fix by updating the Linux Kernel to the patched version.
Conclusion
The Bluetooth: SMP: Fail if remote and local public keys are identical vulnerability affects the Kernel package in the Linux ecosystem. It specifically impacts the Bluetooth Secure Simple Pairing (SMP) protocol. To mitigate the vulnerability, it is recommended to update the Linux Kernel to version v4.9.270 or later. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The impact of this vulnerability is currently unknown as the actual attack plausibility has not been proven. However, it is important to apply the fix to ensure the security of Bluetooth connections.
You can use tools like Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert Playground allows you to analyze your manifest file, such as package-lock.json, and provides real-time alerts for open-source vulnerabilities.
The remote exploitation of this vulnerability has not been proven yet. However, it is always recommended to apply security patches and updates to mitigate potential risks.
No, only versions starting from v3.17 up to v4.9.269 are affected. The vulnerability has been fixed in version v4.9.270.
For more details about this vulnerability, you can refer to the source link provided in the vulnerability details section.
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