CVE-2023-47855: Input Validation
First published: Thu May 16 2024(Updated: )
Improper input validation in some Intel(R) TDX module software before version 1.5.05.46.698 may allow a privileged user to potentially enable escalation of privilege via local access.
Credit: secure@intel.com secure@intel.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ubuntu/intel-microcode | <3.20240514.0ubuntu0.18.04.1+ | 3.20240514.0ubuntu0.18.04.1+ |
| ubuntu/intel-microcode | <3.20240514.0ubuntu0.20.04.1 | 3.20240514.0ubuntu0.20.04.1 |
| ubuntu/intel-microcode | <3.20240514.0ubuntu0.22.04.1 | 3.20240514.0ubuntu0.22.04.1 |
| ubuntu/intel-microcode | <3.20240514.0ubuntu0.23.10.1 | 3.20240514.0ubuntu0.23.10.1 |
| ubuntu/intel-microcode | <3.20240514.0ubuntu0.24.04.1 | 3.20240514.0ubuntu0.24.04.1 |
| ubuntu/intel-microcode | <3.20240514.0ubuntu0.16.04.1+ | 3.20240514.0ubuntu0.16.04.1+ |
| debian/intel-microcode | <=3.20231114.1~deb11u1<=3.20231114.1~deb12u1 | 3.20240514.1~deb11u1 3.20240514.1~deb12u1 3.20240813.2 |
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Reference Links
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01036.html
- https://launchpad.net/bugs/cve/CVE-2023-47855
- https://www.cve.org/CVERecord?id=CVE-2023-47855
- https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/releases/tag/microcode-20240514
- https://ubuntu.com/security/notices/USN-6797-1
- https://nvd.nist.gov/vuln/detail/CVE-2023-47855
- https://security-tracker.debian.org/tracker/CVE-2023-47855
- https://ubuntu.com/security/CVE-2023-47855
- https://security.netapp.com/advisory/ntap-20240621-0003/
Frequently Asked Questions
What is the severity of CVE-2023-47855?
CVE-2023-47855 is classified as a potential escalation of privilege vulnerability due to improper input validation.
How do I fix CVE-2023-47855?
To fix CVE-2023-47855, you should update the Intel microcode to the versions specified as remedies for your respective Ubuntu or Debian operating systems.
What software is affected by CVE-2023-47855?
CVE-2023-47855 affects Intel TDX module software prior to version 1.5.05.46.698 and specific versions of the Intel microcode on various distributions.
Can a guest user exploit CVE-2023-47855?
CVE-2023-47855 can potentially be exploited by a privileged user with local access, leading to escalated privileges.
Is there a specific patch available for CVE-2023-47855?
Yes, specific patches are available in the form of updated Intel microcode packages for vulnerable versions.
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