CVE-2023-43490
Publication date 12 March 2024
Last updated 24 July 2024
Ubuntu priority
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.
From the Ubuntu Security Team
It was discovered that some Intel® Xeon® D Processors did not properly calculate the SGX base key when using Intel® SGX. A privileged local attacker could use this to obtain sensitive information.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| intel-microcode | 24.04 LTS noble |
Not affected
|
| 22.04 LTS jammy |
Fixed 3.20240514.0ubuntu0.22.04.1
|
|
| 20.04 LTS focal |
Fixed 3.20240514.0ubuntu0.20.04.1
|
|
| 18.04 LTS bionic |
Fixed 3.20240514.0ubuntu0.18.04.1+esm1
|
|
| 16.04 LTS xenial |
Fixed 3.20240514.0ubuntu0.16.04.1+esm1
|
|
| 14.04 LTS trusty | Ignored end of ESM support, was ignored [trusty doesn't support early microcode loading at runtime] |
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Get Ubuntu ProSeverity score breakdown
| Parameter | Value |
|---|---|
| Base score |
5.3 · Medium
|
| Attack vector | Local |
| Attack complexity | High |
| Privileges required | High |
| User interaction | None |
| Scope | Changed |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N |
References
Related Ubuntu Security Notices (USN)
- USN-6797-1
- Intel Microcode vulnerabilities
- 29 May 2024