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AUSCERT External Security Bulletin Redistribution
Intel SGX Platform Advisory
10 February 2021
AusCERT Security Bulletin Summary
Product: Intel SGX Platform
Operating System: Network Appliance
Impact/Access: Access Confidential Data -- Existing Account
CVE Names: CVE-2020-24491
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Intel ID: INTEL-SA-00455
Advisory Category: Firmware
Impact of vulnerability : Information Disclosure
Severity rating : MEDIUM
Original release: 02/09/2021
Last revised: 02/09/2021
A potential security vulnerability in the Intel Software Guard Extensions (SGX)
may allow information disclosure. Intel released firmware updates to mitigate
Description: Debug message containing addresses of memory transactions in some
Intel(R) 10th Generation Core Processors supporting SGX may allow a privileged
user to potentially enable information disclosure via local access.
CVSS Base Score: 4.0 Medium
CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N
Some 10th Generation Intel Core Processors:
o Intel Core Processor i7-1060G7, i7-1065G7
o Intel Core Processor i5-1030G4, i5-1030G7, i5-1035G1, i5-1035G4, i5-1035G7
o Intel Core Processor i3-1000G1, i3-1000G4, i3-1005G1
Intel recommends that users of Intel server products listed above update to the
latest firmware version provided by the system manufacturer that addresses
Microcode updates for Linux users are available here:
This 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 02/09/2021 Initial Release
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