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RHEL 7 : microcode_ctl (RHSA-2020:5183)

medium Nessus Plugin ID 143203

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:5183 advisory.

 The microcode_ctl packages provide microcode updates for Intel.

 Security Fix(es):

 * 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)

 Bug Fix(es) and Enhancement(s):

 * Update Intel CPU microcode to microcode-20201112 release, addresses:
 - Addition of 06-55-0b/0xbf (CPX-SP A1) microcode at revision 0x700001e;
 - Addition of 06-8a-01/0x10 (LKF B2/B3) microcode at revision 0x28;
 - Addition of 06-8c-01/0x80 (TGL-UP3/UP4 B1) microcode at revision 0x68;
 - Addition of 06-a5-02/0x20 (CML-H R1) microcode at revision 0xe0;
 - Addition of 06-a5-03/0x22 (CML-S 6+2 G1) microcode at revision 0xe0;
 - Addition of 06-a5-05/0x22 (CML-S 10+2 Q0) microcode at revision 0xe0;
 - Addition of 06-a6-01/0x80 (CML-U 6+2 v2 K0) microcode at revision 0xe0;
 - Update of 06-4e-03/0xc0 (SKL-U/U 2+3e/Y D0/K1) microcode (in intel-06-4e-03/intel-ucode/06-4e-03) from revision 0xdc up to 0xe2;
 - Update of 06-55-04/0xb7 (SKX-D/SP/W/X H0/M0/M1/U0) microcode (in intel-06-55-04/intel-ucode/06-55-04) from revision 0x2006906 up to 0x2006a08;
 - Update of 06-5e-03/0x36 (SKL-H/S/Xeon E3 N0/R0/S0) microcode (in intel-06-5e-03/intel-ucode/06-5e-03) from revision 0xdc up to 0xe2;
 - Update of 06-8e-09/0x10 (AML-Y 2+2 H0) microcode (in intel-06-8e-9e-0x-dell/intel-ucode/06-8e-09) from revision 0xd6 up to 0xde;
 - Update of 06-8e-09/0xc0 (KBL-U/U 2+3e/Y H0/J1) microcode (in intel-06-8e-9e-0x-dell/intel-ucode/06-8e-09) from revision 0xd6 up to 0xde;
 - Update of 06-8e-0a/0xc0 (CFL-U 4+3e D0, KBL-R Y0) microcode (in intel-06-8e-9e-0x-dell/intel-ucode/06-8e-0a) from revision 0xd6 up to 0xe0;
 - Update of 06-8e-0b/0xd0 (WHL-U W0) microcode (in intel-06-8e-9e-0x-dell/intel-ucode/06-8e-0b) from revision 0xd6 up to 0xde;
 - Update of 06-8e-0c/0x94 (AML-Y 4+2 V0, CML-U 4+2 V0, WHL-U V0) microcode (in intel-06-8e-9e-0x-dell/intel-ucode/06-8e-0c) from revision 0xd6 up to 0xde;
 - Update of 06-9e-09/0x2a (KBL-G/H/S/X/Xeon E3 B0) microcode (in intel-06-8e-9e-0x-dell/intel-ucode/06-9e-09) from revision 0xd6 up to 0xde;
 - Update of 06-9e-0a/0x22 (CFL-H/S/Xeon E U0) microcode (in intel-06-8e-9e-0x-dell/intel-ucode/06-9e-0a) from revision 0xd6 up to 0xde;
 - Update of 06-9e-0b/0x02 (CFL-E/H/S B0) microcode (in intel-06-8e-9e-0x-dell/intel-ucode/06-9e-0b) from revision 0xd6 up to 0xde;
 - Update of 06-9e-0c/0x22 (CFL-H/S/Xeon E P0) microcode (in intel-06-8e-9e-0x-dell/intel-ucode/06-9e-0c) from revision 0xd6 up to 0xde;
 - Update of 06-9e-0d/0x22 (CFL-H/S/Xeon E R0) microcode (in intel-06-8e-9e-0x-dell/intel-ucode/06-9e-0d) from revision 0xd6 up to 0xde;
 - Update of 06-3f-02/0x6f (HSX-E/EN/EP/EP 4S C0/C1/M1/R2) microcode from revision 0x43 up to 0x44;
 - Update of 06-55-03/0x97 (SKX-SP B1) microcode from revision 0x1000157 up to 0x1000159;
 - Update of 06-55-06/0xbf (CLX-SP B0) microcode from revision 0x4002f01 up to 0x4003003;
 - Update of 06-55-07/0xbf (CLX-SP/W/X B1/L1) microcode from revision 0x5002f01 up to 0x5003003;
 - Update of 06-5c-09/0x03 (APL D0) microcode from revision 0x38 up to 0x40;
 - Update of 06-5c-0a/0x03 (APL B1/F1) microcode from revision 0x16 up to 0x1e;
 - Update of 06-7a-01/0x01 (GLK B0) microcode from revision 0x32 up to 0x34;
 - Update of 06-7a-08/0x01 (GLK-R R0) microcode from revision 0x16 up to 0x18;
 - Update of 06-7e-05/0x80 (ICL-U/Y D1) microcode from revision 0x78 up to 0xa0;
 - Update of 06-a6-00/0x80 (CML-U 6+2 A0) microcode from revision 0xca up to 0xe0.

 * Disable 06-8c-01 (TGL-UP3/UP4 B1) microcode update by default.

 * Add README file to the documentation directory.

 * Add publicly-sourced codenames list to supply to gen_provides.sh; update the latter to handle the somewhat different format.

 * Add SUMMARY.intel-ucode file

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected microcode_ctl package.

See Also

http://www.nessus.org/u?119c293f

https://access.redhat.com/security/updates/classification/#moderate

https://access.redhat.com/errata/RHSA-2020:5183

https://bugzilla.redhat.com/show_bug.cgi?id=1828583

https://bugzilla.redhat.com/show_bug.cgi?id=1890355

https://bugzilla.redhat.com/show_bug.cgi?id=1890356

Plugin Details

Severity: Medium

ID: 143203

File Name: redhat-RHSA-2020-5183.nasl

Version: 1.9

Type: local

Agent: unix

Published: 11/24/2020

Updated: 11/7/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N

CVSS Score Source: CVE-2020-8698

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:rhel_tus:7.3, cpe:/o:redhat:rhel_e4s:7.3, p-cpe:/a:redhat:enterprise_linux:microcode_ctl, cpe:/o:redhat:rhel_aus:7.3

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 11/23/2020

Vulnerability Publication Date: 11/11/2020

Reference Information

CVE: CVE-2020-8695, CVE-2020-8696, CVE-2020-8698

CWE: 200, 212

RHSA: 2020:5183