CVE-2023-43490

El cálculo incorrecto en el mecanismo de codificación de microcódigo para algunos procesadores Intel(R) Xeon(R) D con Intel(R) SGX puede permitir que un usuario privilegiado habilite potencialmente la divulgación de información a través del acceso local.

A vulnerability was found in some Intel Xeon D Processors with Intel SGX. This issue may allow a local attacker to achieve sensitive information disclosure, impacting the data confidentiality of the targeted system.

It was discovered that some 3rd and 4th Generation Intel® Xeon® Processors did not properly restrict access to certain hardware features when using Intel® SGX or Intel® TDX. This may allow a privileged local user to potentially further escalate their privileges on the system. This issue only affected Ubuntu 23.10, Ubuntu 22.04 LTS, Ubuntu 20.04 LTS, Ubuntu 18.04 LTS and Ubuntu 16.04 LTS. It was discovered that some Intel® Atom® Processors did not properly clear register state when performing various operations. A local attacker could use this to obtain sensitive information via a transient execution attack. This issue only affected Ubuntu 23.10, Ubuntu 22.04 LTS, Ubuntu 20.04 LTS, Ubuntu 18.04 LTS and Ubuntu 16.04 LTS.