Intel Microcode Vulnerability: Denial of Service Risk in Intel Processors
Summary
UBUNTU-CVE-2024-31068: Improper Finite State Machines (FSMs) in Hardware Logic for some Intel(R) Processors may allow privileged 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
The 'intel-microcode' package provides microcode updates for Intel processors, enhancing their performance and security. It is crucial for ensuring that Intel CPUs operate efficiently and securely. However, certain versions of this package are vulnerable to a flaw that may allow a privileged user to cause a denial of service, impacting system stability and availability.
Vulnerability Detail
The vulnerability, identified as CVE-2024-31068, arises from improper finite state machines (FSMs) in the hardware logic of some Intel processors. This flaw can be exploited by a privileged user with local access to potentially enable a denial of service condition. The ramifications of this vulnerability include system crashes or unavailability, which could disrupt critical operations and services.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, if immediate patching is not possible, consider restricting local access to systems running vulnerable versions of the 'intel-microcode' package to prevent exploitation.
Conclusion
The intel-microcode vulnerability (CVE-2024-31068) poses a significant risk of denial of service for systems using affected versions. Users are strongly advised to update to the latest patched versions to mitigate this risk. Regular monitoring and updates are essential for maintaining system security.
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FAQ
CVE-2024-31068 is a vulnerability in the intel-microcode package that allows a privileged user to potentially enable denial of service via local access.
Affected versions include 3.20210608.0ubuntu0.14.04.1+esm1, 3.20250211.0ubuntu0.16.04.1+esm1, 3.20250211.0ubuntu0.18.04.1+esm1, and others prior to the patched versions.
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The CVSS score of this vulnerability is 5.3, indicating a medium severity level.
No subscription is required for the patched versions of the intel-microcode package on Ubuntu 20.04 LTS and later.
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