Intel Microcode Vulnerability: Insufficient Control Flow Management
Summary
UBUNTU-CVE-2021-0127: Insufficient control flow management in some Intel(R) Processors may allow an authenticated user to potentially enable a 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
The intel-microcode package provides microcode updates for Intel processors, enhancing their performance and security. This package is crucial for ensuring that Intel CPUs operate efficiently and securely by applying the latest microcode fixes. However, it is susceptible to vulnerabilities that can potentially compromise system integrity.
Vulnerability Detail
The vulnerability identified as CVE-2021-0127 arises from insufficient control flow management in certain Intel processors. This flaw allows an authenticated user to potentially enable a denial of service through local access. The implications of this vulnerability can lead to system instability and unavailability, posing a significant risk to affected systems.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
Currently, no specific workarounds are provided for this vulnerability. The best course of action is to apply the available updates as soon as possible.
Conclusion
In summary, CVE-2021-0127 is a vulnerability affecting the intel-microcode package that can lead to denial of service on affected Intel processors. Users are advised to update their packages to the latest versions to mitigate this risk. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities effectively.
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FAQ
CVE-2021-0127 is a vulnerability in Intel processors that allows an authenticated user to potentially cause a denial of service.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
The CVSS score for CVE-2021-0127 is 5.6, indicating a medium severity level.
No subscription is required to access the fix for the intel-microcode package on Ubuntu 18.04 and later versions.
If you cannot update the package immediately, ensure to limit access to the system and monitor for any unusual activity until the update can be applied.
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