-----BEGIN PGP SIGNED MESSAGE-----
AUSCERT External Security Bulletin Redistribution
2021.1 IPU - Intel Atom Processor Advisory
9 June 2021
AusCERT Security Bulletin Summary
Product: Intel Atom Processor
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Access Confidential Data -- Existing Account
CVE Names: CVE-2020-24513
- --------------------------BEGIN INCLUDED TEXT--------------------
Intel ID: INTEL-SA-00465
Advisory Category: Firmware
Impact of vulnerability : Information Disclosure
Severity rating : MEDIUM
Original release: 06/08/2021
Last revised: 06/08/2021
A potential security vulnerability in some Intel Atom Processors may allow
information disclosure. Intel is releasing firmware updates to mitigate this
Description: Domain-bypass transient execution vulnerability in some Intel Atom
(R) Processors may allow an authenticated user to potentially enable
information disclosure via 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 recommends that users of Intel Processors update to the latest version
provided by the system manufacturer that addresses these issues.
To address this issue, an SGX TCB recovery is planned for Q2 2021. Customers
will require the software update to get successful attestation responses. For
customers using the Intel Attestation Service (IAS), the IAS Development
Environment (DEV) will enforce the software updates beginning June 15, 2021 and
the IAS Production Environment (LIV) will enforce the updates beginning July
For customers that are not using IAS, but instead are constructing their own
attestation infrastructure using the Intel SGX Provisioning Certificate Service
(PCS), updated Endorsements/Reference Values (i.e., PCK Certificates and
verification collateral) will be available June 8, 2021. These customers decide
when to enforce the software update, as part of their Appraisal Policies.
Refer to Intel SGX Attestation Technical Details for more information on the
SGX TCB recovery process.
Further TCB Recovery Guidance for developers is available.
The following issue was found internally by Intel.
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.
Revision Date Description
1.0 06/08/2021 Initial Release
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to firstname.lastname@example.org
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
Australian Computer Emergency Response Team
The University of Queensland
Internet Email: email@example.com
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
-----BEGIN PGP SIGNATURE-----
-----END PGP SIGNATURE-----