Sensitive Information Disclosure in Intel Microcode: CVE-2020-8696
Summary
UBUNTU-CVE-2020-8696: Improper removal of sensitive information before storage or transfer in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access. Affects intel-microcode versions < 3.20201110.0ubuntu0.14.04.1. Fixed in 3.20201110.0ubuntu0.14.04.1. How to fix ↓
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Background
Intel Microcode is a critical component of Intel processors that provides updates to the processor's internal instructions. It plays a vital role in ensuring the stability and security of the system by allowing for bug fixes and performance improvements. However, certain versions of the Intel Microcode package in Ubuntu have been found to have a vulnerability that could lead to sensitive information being disclosed.
Vulnerability Detail
The vulnerability, identified as CVE-2020-8696, arises from improper removal of sensitive information before storage or transfer in some Intel processors. This flaw may allow an authenticated user to potentially enable information disclosure via local access. The technical implications of this vulnerability could lead to unauthorized access to sensitive data, posing a significant risk to system integrity and user privacy.
How To Fix
Minimum fixed version
3.20201110.0ubuntu0.14.04.1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade intel-microcodeTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a workaround, ensure that sensitive data is not stored or transferred without proper sanitization. Additionally, limit local access to systems running vulnerable versions of the Intel Microcode until the patch is applied.
Conclusion
CVE-2020-8696 is a significant vulnerability affecting Intel Microcode across multiple Ubuntu LTS versions. It is crucial to apply the necessary updates to protect against potential information disclosure risks. Users should remain vigilant and consider using tools like Vulert to monitor for vulnerabilities in their applications.
See every vulnerability recorded for intel-microcode →
FAQ
CVE-2020-8696 is a vulnerability in Intel Microcode that can lead to sensitive information disclosure due to improper handling of data.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
The risks include unauthorized access to sensitive information, which can compromise user privacy and system security.
Yes, there are patched versions available for various Ubuntu LTS releases. It is recommended to update to the latest version to mitigate the risk.
If immediate updating is not possible, limit local access to the affected systems and ensure sensitive data is handled securely.
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