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redhatRedHatRHSA-2020:2758
HistoryJun 29, 2020 - 7:37 a.m.

(RHSA-2020:2758) Moderate: microcode_ctl security, bug fix and enhancement update

2020-06-2907:37:56
access.redhat.com
50

2.1 Low

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:N/A:N

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

0.001 Low

EPSS

Percentile

19.4%

Security Fix(es):

  • hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)

  • hw: L1D Cache Eviction Sampling (CVE-2020-0549)

  • hw: Vector Register Data Sampling (CVE-2020-0548)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE page(s)
listed in the References section.

Bug Fix(es):

  • Update Intel CPU microcode to microcode-20200609 release:
    • Update of 06-2d-06/0x6d (SNB-E/EN/EP C1/M0) microcode from revision 0x61f
      up to 0x621;
    • Update of 06-2d-07/0x6d (SNB-E/EN/EP C2/M1) microcode from revision 0x718
      up to 0x71a;
    • Update of 06-3c-03/0x32 (HSW C0) microcode from revision 0x27 up to 0x28;
    • Update of 06-3d-04/0xc0 (BDW-U/Y E0/F0) microcode from revision 0x2e
      up to 0x2f;
    • Update of 06-45-01/0x72 (HSW-U C0/D0) microcode from revision 0x25
      up to 0x26;
    • Update of 06-46-01/0x32 (HSW-H C0) microcode from revision 0x1b up to 0x1c;
    • Update of 06-47-01/0x22 (BDW-H/Xeon E3 E0/G0) microcode from revision 0x21
      up to 0x22;
    • Update of 06-4e-03/0xc0 (SKL-U/Y D0) microcode from revision 0xd6
      up to 0xdc;
    • Update of 06-55-03/0x97 (SKX-SP B1) microcode from revision 0x1000151
      up to 0x1000157;
    • Update of 06-55-04/0xb7 (SKX-SP H0/M0/U0, SKX-D M1) microcode
      (in intel-06-55-04/intel-ucode/06-55-04) from revision 0x2000065
      up to 0x2006906;
    • Update of 06-55-06/0xbf (CLX-SP B0) microcode from revision 0x400002c
      up to 0x4002f01;
    • Update of 06-55-07/0xbf (CLX-SP B1) microcode from revision 0x500002c
      up to 0x5002f01;
    • Update of 06-5e-03/0x36 (SKL-H/S R0/N0) microcode from revision 0xd6
      up to 0xdc;
    • Update of 06-7e-05/0x80 (ICL-U/Y D1) microcode from revision 0x46
      up to 0x78;
    • Update of 06-8e-09/0x10 (AML-Y22 H0) microcode from revision 0xca
      up to 0xd6;
    • Update of 06-8e-09/0xc0 (KBL-U/Y H0) microcode from revision 0xca
      up to 0xd6;
    • Update of 06-8e-0a/0xc0 (CFL-U43e D0) microcode from revision 0xca
      up to 0xd6;
    • Update of 06-8e-0b/0xd0 (WHL-U W0) microcode from revision 0xca
      up to 0xd6;
    • Update of 06-8e-0c/0x94 (AML-Y42 V0, CML-Y42 V0, WHL-U V0) microcode
      from revision 0xca up to 0xd6;
    • Update of 06-9e-09/0x2a (KBL-G/H/S/X/Xeon E3 B0) microcode from revision
      0xca up to 0xd6;
    • Update of 06-9e-0a/0x22 (CFL-H/S/Xeon E3 U0) microcode from revision 0xca
      up to 0xd6;
    • Update of 06-9e-0b/0x02 (CFL-S B0) microcode from revision 0xca up to 0xd6;
    • Update of 06-9e-0c/0x22 (CFL-H/S P0) microcode from revision 0xca
      up to 0xd6;
    • Update of 06-9e-0d/0x22 (CFL-H R0) microcode from revision 0xca up to 0xd6.
  • Do not update 06-4e-03 (SKL-U/Y) and 06-5e-03 (SKL-H/S/Xeon E3 v5) to revision
    0xdc, use 0xd6 by default.
  • Enable 06-2d-07 (SNB-E/EN/EP) caveat by default.
  • Enable 06-55-04 (SKL-SP/X/W) caveat by default.
  • Avoid find being SIGPIPE’d on early “grep -q” exit in the dracut script.
  • Re-generate initramfs not only for the currently running kernel,
    but for several recently installed kernels as well.
  • Change the URL in the intel-microcode2ucode.8 to point to the GitHub
    repository since the microcode download section at Intel Download Center
    does not exist anymore.

2.1 Low

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:N/A:N

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

0.001 Low

EPSS

Percentile

19.4%