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oraclelinuxOracleLinuxELSA-2023-12952
HistoryOct 27, 2023 - 12:00 a.m.

grub2 security update

2023-10-2700:00:00
linux.oracle.com
11
grub2
security update
bug fixes
aarch64
efi
cve-2022-28736
oldis-16371
orabug
kernel
sbat
xen
multiboot2
uefi
signing certificate
symlink
comparison
rhck

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7 High

AI Score

Confidence

Low

6.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.001 Low

EPSS

Percentile

26.3%

[2.02-0.87.0.26.el7_9.9]

  • Enable common subpackage for aarch64
  • Do not sign aarch64 efi binaries [Orabug: 32670043]
  • Remove aarch64 deps on shim [Orabug: 32670043]
  • Restore versioned certificate provide for aarch64 package to satisfy shim [Orabug: 32670043]
    [2.02-0.87.0.24.el7_9.9]
  • Replace bugzilla.oracle.com reference [Orabug: 35477723]
    [2.02-0.87.0.23.el7_9.9]
  • Backport kernel EFI allocation pacthes [Orabug: 34301086]
    [2.02-0.87.0.21.el7_9.9]
  • Add CVE-2022-28736 to the list [JIRA: OLDIS-16371]
    [2.02-0.87.0.19.el7_9.9]
  • Fix: CVE-2021-3695, CVE-2021-3696, CVE-2021-3697,
    CVE-2022-28733, CVE-2022-28734, CVE-2022-28735 [JIRA: OLDIS-16371]
  • Various coverity fixes [JIRA: OLDIS-16371]
  • bump SBAT generation [JIRA: OLDIS-16371]
    [2.02-0.87.0.17.el7_9.9]
  • Cleanup XEN shell script (Alex Burmashev) [Orabug: 33851417]
  • Update SBAT data (Alex Burmashev) [Orabug: 33851417]
  • efinet: change SNP open call (Alex Burmashev) [Orabug: 32646964]
  • disable buggy 0183-efinet-retransmit-if-our-device-is-busy.patch [Orabug: 27982684]
  • Patch multiboot2 to the recent state [Orabug: 32950597]
  • Enable multiboot2 for UEFI ( non Secureboot ) mode [Orabug: 32950597]
  • Update signing certificate [Orabug: 32670043]
  • Update shim and certificates dependencies [Orabug: 32670043]
  • xfs: Don’t attempt to iterate over empty directory [Orabug: 32584717]
  • add SBAT metadata for Oracle Linux grub2
  • Use similar format for menu entry in grub environment block
  • config file. [Orabug: 32172943]
  • Fix degradation in multiboot2 code [Orabug: 32069510]
  • Update signing certificate for efi binaries
  • Update upstream references [Orabug: 30138841]
  • Restore symlink to grub environment file, that was removed during grub2-efi update
    if grub2 package is also installed on UEFI machines [Orabug: 27345750]
  • fix symlink removal scriptlet, to be executed only on removal [Orabug: 19231481]
  • Fix comparison in patch for [Orabug: 18504756]
  • Remove symlink to grub environment file during uninstall on EFI platforms [Orabug: 19231481]
  • replace dynamic EFI boot folder path generation with predefined ‘redhat’ (Alex Burmashev)
  • Put ‘with’ in menuentry instead of ‘using’ [Orabug: 18504756]
  • Use different titles for UEK and RHCK kernels [Orabug: 18504756]

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7 High

AI Score

Confidence

Low

6.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.001 Low

EPSS

Percentile

26.3%