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AUSCERT External Security Bulletin Redistribution
ESB-2021.2905
microcode_ctl security, bug fix and enhancement update
27 August 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: microcode_ctl
Publisher: Red Hat
Operating System: Red Hat
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Increased Privileges -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-24512 CVE-2020-24511 CVE-2020-24489
CVE-2020-8698 CVE-2020-8696 CVE-2020-8695
CVE-2020-0549 CVE-2020-0548 CVE-2020-0543
Reference: ESB-2021.2797
ESB-2021.2537
ESB-2021.2258
Original Bulletin:
https://access.redhat.com/errata/RHSA-2021:3255
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Red Hat Security Advisory
Synopsis: Important: microcode_ctl security, bug fix and enhancement update
Advisory ID: RHSA-2021:3255-02
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3255
Issue date: 2021-08-24
CVE Names: CVE-2020-0543 CVE-2020-0548 CVE-2020-0549
CVE-2020-8695 CVE-2020-8696 CVE-2020-8698
CVE-2020-24489 CVE-2020-24511 CVE-2020-24512
=====================================================================
1. Summary:
An update for microcode_ctl is now available for Red Hat Enterprise Linux
7.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Server AUS (v. 7.4) - x86_64
Red Hat Enterprise Linux Server E4S (v. 7.4) - x86_64
Red Hat Enterprise Linux Server TUS (v. 7.4) - x86_64
3. Description:
The microcode_ctl packages provide microcode updates for Intel.
Security Fix(es):
* hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)
* hw: Vector Register Data Sampling (CVE-2020-0548)
* hw: L1D Cache Eviction Sampling (CVE-2020-0549)
* hw: vt-d related privilege escalation (CVE-2020-24489)
* hw: improper isolation of shared resources in some Intel Processors
(CVE-2020-24511)
* hw: observable timing discrepancy in some Intel Processors
(CVE-2020-24512)
* hw: Information disclosure issue in Intel SGX via RAPL interface
(CVE-2020-8695)
* hw: Vector Register Leakage-Active (CVE-2020-8696)
* hw: Fast forward store predictor (CVE-2020-8698)
4. Solution:
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
For details on how to apply this update, refer to:
https://access.redhat.com/articles/11258
5. Bugs fixed (https://bugzilla.redhat.com/):
1788786 - CVE-2020-0548 hw: Vector Register Data Sampling
1788788 - CVE-2020-0549 hw: L1D Cache Eviction Sampling
1827165 - CVE-2020-0543 hw: Special Register Buffer Data Sampling (SRBDS)
1828583 - CVE-2020-8695 hw: Information disclosure issue in Intel SGX via RAPL interface
1890355 - CVE-2020-8696 hw: Vector Register Leakage-Active
1890356 - CVE-2020-8698 hw: Fast forward store predictor
1962650 - CVE-2020-24489 hw: vt-d related privilege escalation
1962702 - CVE-2020-24511 hw: improper isolation of shared resources in some Intel Processors
1962722 - CVE-2020-24512 hw: observable timing discrepancy in some Intel Processors
1972334 - [rhel-7.4.z] Re-enable 06-5e-03 (SKL-H/S, CPUID 0x506e3) latest microcode updates
6. Package List:
Red Hat Enterprise Linux Server AUS (v. 7.4):
Source:
microcode_ctl-2.1-22.41.el7_4.src.rpm
x86_64:
microcode_ctl-2.1-22.41.el7_4.x86_64.rpm
microcode_ctl-debuginfo-2.1-22.41.el7_4.x86_64.rpm
Red Hat Enterprise Linux Server E4S (v. 7.4):
Source:
microcode_ctl-2.1-22.41.el7_4.src.rpm
x86_64:
microcode_ctl-2.1-22.41.el7_4.x86_64.rpm
microcode_ctl-debuginfo-2.1-22.41.el7_4.x86_64.rpm
Red Hat Enterprise Linux Server TUS (v. 7.4):
Source:
microcode_ctl-2.1-22.41.el7_4.src.rpm
x86_64:
microcode_ctl-2.1-22.41.el7_4.x86_64.rpm
microcode_ctl-debuginfo-2.1-22.41.el7_4.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2020-0543
https://access.redhat.com/security/cve/CVE-2020-0548
https://access.redhat.com/security/cve/CVE-2020-0549
https://access.redhat.com/security/cve/CVE-2020-8695
https://access.redhat.com/security/cve/CVE-2020-8696
https://access.redhat.com/security/cve/CVE-2020-8698
https://access.redhat.com/security/cve/CVE-2020-24489
https://access.redhat.com/security/cve/CVE-2020-24511
https://access.redhat.com/security/cve/CVE-2020-24512
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
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