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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.2905
          microcode_ctl security, bug fix and enhancement update
                              27 August 2021

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

        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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