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AUSCERT External Security Bulletin Redistribution
Intel Processors Data Leakage Advisory
18 June 2020
AusCERT Security Bulletin Summary
Product: Intel processors
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Access Privileged Data -- Existing Account
CVE Names: CVE-2020-0549 CVE-2020-0548
Revision History: June 18 2020: Vendor updated recommendations in advisory
January 28 2020: Initial Release
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Intel ID: INTEL-SA-00329
Advisory Category: Hardware
Impact of vulnerability: Information Disclosure
Severity rating: MEDIUM
Original release: 01/27/2020
Last revised: 06/09/2020
Potential security vulnerabilities in some Intel Processors may allow
information disclosure. Intel is releasing firmware updates to mitigate these
Description: Cleanup errors in some Intel(R) Processors may allow an
authenticated user to potentially enable information disclosure via local
CVSS Base Score: 2.8 Low
CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
Description: Cleanup errors in some data cache evictions for some Intel(R)
Processors may allow an authenticated user to potentially enable information
disclosure via local access.
CVSS Base Score: 6.5 Medium
CVSS Vector: CVSS:3.1/AV:L/AC:L/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 affected Intel Processorsupdate to the latest
version firmware provided by the system manufacturer that addresses these
Intel has released microcode updates for the affected Intel Processors that are
currently supported on the public github repository. Please see details below
on access to the microcode:
GitHub*: Public Github: https://github.com/intel/
GitHub* MCU Repository training is available on RDC at this location: https://
To obtain access to Intel s GitHub* OTCShare:
1) Create a GitHub* account at https://github.com . Your account must include
your company email address as your primary email address.
2) Email your request to email@example.com with the following
b. Email address
c. Company name
d. Github user ID
3) Requests typically take 1-2 business days to process. An invitation to the
OTCShare organization will be emailed to the primary email address registered
with your GitHub account. Alternately, you may accept the invitation here:
4) After you have accepted the OTCShare invite, you will be added to the MCU
repository within 1-2 business days.
Additional technical details about these vulnerabilities can be found at:
Intel would like to thank the following individuals for finding, reporting and
coordinating these vulnerabilities to us.
Intel thanks TU Graz and KU Leuven for disclosure of CVE-2020-0549 .
Graz University of Technology: Moritz Lipp, Michael Schwarz, Daniel Gruss.
KU Leuven: Jo Van Bulck.
Intel thanks VU Amsterdam, for disclosure of CVE-2020-0548 and CVE-2020-0549 .
VUSec group at VU Amsterdam: Stephan van Schaik, Alyssa Milburn, Sebastian A
sterlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, Cristiano Giuffrida.
Researchers from TU Graz and Ku Leuven provided Intel with a Proof of Concept
(POC) in May 2019 and researchers from VU Amsterdam provided Proof of Concept
(POC) in October 2019. Intel subsequently confirmed each submission
demonstrates CVE-2020-0549 individually.
Revision Date Description
1.0 01/27/2020 Initial Release
1.1 06/09/2020 Updated Recomendations
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