CVE-2023-43490
First published: Tue Mar 12 2024(Updated: )
Incorrect calculation in microcode keying mechanism for some Intel(R) Xeon(R) D Processors with Intel(R) SGX may allow a privileged user to potentially enable information disclosure 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 | <3.20240514.0ubuntu0.16.04.1+ | 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://lists.debian.org/debian-lts-announce/2024/05/msg00003.html
- https://security.netapp.com/advisory/ntap-20240405-0009/
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01045.html
- https://launchpad.net/bugs/cve/CVE-2023-43490
- https://www.cve.org/CVERecord?id=CVE-2023-43490
- https://ubuntu.com/security/notices/USN-6797-1
- https://nvd.nist.gov/vuln/detail/CVE-2023-43490
- https://security-tracker.debian.org/tracker/CVE-2023-43490
- https://ubuntu.com/security/CVE-2023-43490
- https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/releases/tag/microcode-20240312
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2270737
- https://access.redhat.com/errata/RHSA-2024:9401
- https://bugzilla.redhat.com/show_bug.cgi?id=2270704
Frequently Asked Questions
What is the severity of CVE-2023-43490?
The severity of CVE-2023-43490 is rated as high due to the potential for information disclosure by a privileged user.
How do I fix CVE-2023-43490?
To fix CVE-2023-43490, update the Intel microcode to the recommended versions provided by your Linux distribution.
What systems are affected by CVE-2023-43490?
CVE-2023-43490 affects some Intel Xeon D Processors that utilize Intel SGX microcode on specific Ubuntu and Debian versions.
Can CVE-2023-43490 be exploited remotely?
CVE-2023-43490 requires local access for exploitation, making it a local privilege escalation vulnerability.
Is there a workaround for CVE-2023-43490?
There are no known workarounds for CVE-2023-43490; the only mitigation is to apply the necessary microcode updates.
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