Critical Vulnerability in Intel Microcode: Denial of Service Risk
Summary
UBUNTU-CVE-2024-37020: Sequence of processor instructions leads to unexpected behavior in the Intel(R) DSA V1.0 for some Intel(R) Xeon(R) Processors may allow an authenticated user to potentially enable denial of service via local access. Affects intel-microcode versions 1.20130906.1ubuntu2 – 3.20210608.0ubuntu0.14.04.1+esm1. No fix is published. How to fix ↓
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Background
Intel Microcode is a crucial component that updates the processor's firmware to enhance performance and security. It plays a vital role in ensuring that Intel processors operate efficiently and securely. However, certain versions of Intel Microcode across various Ubuntu LTS releases have been found vulnerable to a sequence of processor instructions that could lead to unexpected behavior, particularly affecting Intel Xeon processors.
Vulnerability Detail
The vulnerability identified as CVE-2024-37020 arises from a sequence of processor instructions that may allow an authenticated user to potentially enable denial of service via local access. This issue affects multiple versions of the Intel Microcode package across different Ubuntu distributions, posing a significant risk to systems relying on these processors. The vulnerability has a CVSS score of 3.8, indicating a medium severity level, and it could lead to system instability or crashes if exploited.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can limit local access to the affected systems to mitigate the risk of exploitation until the patch is applied. Additionally, monitoring system logs for unusual activity may help in identifying potential exploitation attempts.
Conclusion
In summary, CVE-2024-37020 represents a significant vulnerability in Intel Microcode that could lead to denial of service on affected systems. It is crucial for users to update their packages to the latest versions to mitigate this risk. Utilizing tools like Vulert can help in monitoring for such vulnerabilities effectively.
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FAQ
CVE-2024-37020 is a vulnerability in Intel Microcode that may allow an authenticated user to enable denial of service via local access.
Affected versions include Intel Microcode for Ubuntu LTS releases 14.04, 16.04, 18.04, 20.04, 22.04, and 24.04.
You can use Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected without needing to sign up.
If an immediate update is not possible, limit local access to the system and monitor for any unusual activity as a temporary measure.
The CVSS score of CVE-2024-37020 is 3.8, indicating a medium severity level.
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