Intel SGX DCAP Software: Denial of Service -- Remote/Unauthenticated

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.4016
                     Intel SGX DCAP Software Advisory
                             12 November 2020

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Intel SGX DCAP Software
Publisher:         Intel
Operating System:  Windows
                   Linux variants
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-8766  

Original Bulletin: 
   https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00398.html

- --------------------------BEGIN INCLUDED TEXT--------------------

Intel ID:                 INTEL-SA-00398
Advisory Category:        Software
Impact of vulnerability : Denial of Service
Severity rating :         MEDIUM
Original release:         11/10/2020
Last revised:             11/10/2020

Summary:

A potential security vulnerability in the Intel Software Guard Extensions (SGX)
Datacenter Attestation Primitives (DCAP) software may allow denial of service.
Intel is releasing software updates to mitigate this potential vulnerability.

Vulnerability Details

CVEID: CVE-2020-8766

Description: Improper conditions check in the Intel(R) SGX DCAP software before
version 1.6 may allow an unauthenticated user to potentially enable denial of
service via adjacent access.

CVSS Base Score: 6.5 Medium

CVSS Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:

Intel SGX DCAP software before version 1.6.

Recommendations:

Intel recommends updating Intel SGX DCAP software to version 1.6 or later.

Updates are available for download at this location: https://github.com/intel/
SGXDataCenterAttestationPrimitives

Acknowledgements:

This issue was found internally by Intel employees. Intel would like to thank
Przemyslaw Duda and Lukasz A. Juzwiuk.

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 History

Revision    Date      Description
1.0      11/10/2020 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 auscert@auscert.org.au
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:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
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-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=rhU6
-----END PGP SIGNATURE-----