Sensitive Information Exposure in Intel Microcode and Linux Packages
Summary
CVE-2024-28956: Exposure of Sensitive Information in Shared Microarchitectural Structures during Transient Execution for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local acc... Affects intel-ucode versions < 20250512-r0. Fixed in 20250512-r0. How to fix ↓
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Background
Intel microcode is a critical component that updates the internal instructions of Intel processors, enhancing performance and security. The Linux package serves as the core operating system kernel, managing hardware and system resources. Both packages are integral to Debian-based systems, and their vulnerabilities can lead to severe security risks, particularly in environments where sensitive data is processed.
Vulnerability Detail
The vulnerability identified as CVE-2024-28956 arises from the exposure of sensitive information in shared microarchitectural structures during transient execution in certain Intel processors. This flaw allows an authenticated user with local access to potentially disclose sensitive information, which can lead to unauthorized data access and compromise system integrity.
How To Fix
Minimum fixed version
20250512-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
As a temporary measure, users can limit local access to systems running vulnerable versions of the affected packages. Implementing strict access controls and monitoring user activities can help mitigate the risk until a patch is applied.
Conclusion
CVE-2024-28956 represents a significant risk to systems utilizing vulnerable versions of the intel-microcode and linux packages. It is crucial for users to apply the recommended updates and consider workarounds to mitigate potential risks until patches are fully implemented.
See every vulnerability recorded for intel-ucode →
FAQ
CVE-2024-28956 is a vulnerability that allows authenticated users to potentially disclose sensitive information through local access due to flaws in Intel microcode and Linux packages.
The vulnerability affects Debian-based systems running specific versions of the intel-microcode, linux, and xen packages.
You can use Vulert, which monitors open-source vulnerabilities in your software. By simply uploading your manifest file like package-lock.json, you can check for vulnerabilities without needing to install any software.
If immediate updates are not possible, consider restricting local access to the system and implementing monitoring to detect any unauthorized access attempts.
Detailed information about CVE-2024-28956 can be found on various security advisory websites and through the official Debian security announcements.
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