Potential security vulnerabilities in some Intel® Processors may allow information disclosure.** **Intel and others are releasing software updates to mitigate these potential vulnerabilities.
CVEID: CVE-2020-0551
Description: Load value injection in some Intel® Processors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access.
CVSS Base Score: 5.6 Medium
CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
A list of impacted products can be found here.
Intel® SGX
To mitigate the potential exploits of Load Value Injection (LVI) on platforms and applications utilizing Intel® SGX, Intel is releasing updates to the SGX Platform Software (PSW) and SDK starting today. The Intel® SGX SDK includes guidance on how to mitigate LVI for Intel® SGX application developers. Intel has likewise worked with our industry partners to make application compiler options available and will conduct an SGX TCB Recovery. Refer to Intel® SGX Attestation Technical Details for more information on SGX TCB Recovery.
Intel recommends the following steps:
Impacted system users:
SGX Application Providers:
The required SGX PSW and SDK versions are available today through the download links below.
The latest Windows* SGX PSW and SDK can be found here: <https://registrationcenter.intel.com/en/forms/?productid=2614>
The latest Linux SGX PSW and SDK can be found here: <https://01.org/intel-software-guard-extensions/downloads>
Other Impacts
Intel is not currently aware of any load value injection-specific universal or non universal gadget for Operating System from Application, VMM from VM, between guests in Virtualized environments, between different application and inside an application and is not releasing additional mitigations for these environments. As a best practice, Intel recommends that users update to the latest Operating System and VMM provided by your system vendors. For application developers or system administrators that wish to consider additional mitigations tailored to their specific threat models, additional information is available here, which contains additional technical details about this issue and mitigations.
Additional Advisory Guidance on CVE-2020-0551 available here.
Intel would like to thank Jo Van Bulck from imec-DistriNet, KU Leuven who first reported this issue to us. Intel would like to thank all researchers involved in this academic paper for adhering to coordinated disclosure.
Intel would like to thank Dan Lutas and Andrei Lutas from BitDefender who subsequently reported a variant of LVI to us.
Intel, and nearly the entire technology industry, follows a disclosure practice called Coordinated Disclosure, under which a cybersecurity vulnerability is generally publicly disclosed only after mitigations are available.