Denial of Service Vulnerability in Intel Microcode Packages
Summary
CVE-2024-39355: Improper handling of physical or environmental conditions in some Intel(R) Processors may allow an authenticated user to enable denial of service via local access. Affects intel-ucode versions < 20250211-r0. Fixed in 20250211-r0. How to fix ↓
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Background
Intel microcode is a critical component of Intel processors that provides updates and fixes to the processor's firmware. It plays a vital role in ensuring the stability and security of systems running Intel hardware. The microcode updates are essential for maintaining optimal performance and addressing known vulnerabilities. However, certain versions of the Intel microcode packages in Debian distributions are susceptible to a denial of service vulnerability, which can be exploited by authenticated users with local access.
Vulnerability Detail
The vulnerability, identified as CVE-2024-39355, arises from improper handling of physical or environmental conditions in some Intel processors. This flaw allows an authenticated user to potentially enable a denial of service condition through local access. The ramifications of this vulnerability could lead to system instability, crashes, or unavailability, impacting the overall functionality of the affected systems. It is crucial to address this vulnerability to maintain system integrity and security.
How To Fix
Minimum fixed version
20250211-r0
This is the first release that contains the fix.
sudo apk add --upgrade intel-ucodeTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. The best course of action is to apply the necessary updates as soon as they become available.
Conclusion
The CVE-2024-39355 vulnerability poses a significant risk to systems using Intel microcode in Debian distributions. It is essential for users to stay informed about updates and apply them promptly to ensure the security and stability of their systems. Utilizing tools like Vulert can aid in monitoring for such vulnerabilities effectively.
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FAQ
CVE-2024-39355 is a vulnerability in Intel microcode that allows an authenticated user to enable denial of service via local access.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected without requiring any signup.
The vulnerability can lead to system instability, crashes, or unavailability, affecting the overall performance of systems using the affected Intel processors.
Yes, users are advised to update their Intel microcode package to the latest version available in their Debian distribution to mitigate this vulnerability.
While there are no specific workarounds, it is recommended to monitor your systems closely and apply updates as soon as they are available to minimize risk.
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