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Hash: SHA256

====================================================================                   Red Hat Security Advisory

Synopsis:          Moderate: grub2 security update
Advisory ID:       RHSA-2021:0699-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:0699
Issue date:        2021-03-02
CVE Names:         CVE-2020-14372 CVE-2020-25632 CVE-2020-25647 
                   CVE-2020-27749 CVE-2020-27779 CVE-2021-20225 
                   CVE-2021-20233 
====================================================================
1. Summary:

An update for grub2 is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Moderate. 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 Client (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64

3. Description:

The grub2 packages provide version 2 of the Grand Unified Boot Loader
(GRUB), a highly configurable and customizable boot loader with modular
architecture. The packages support a variety of kernel formats, file
systems, computer architectures, and hardware devices.

Security Fix(es):

* grub2: acpi command allows privileged user to load crafted ACPI tables
when Secure Boot is enabled (CVE-2020-14372)

* grub2: Use-after-free in rmmod command (CVE-2020-25632)

* grub2: Out-of-bounds write in grub_usb_device_initialize()
(CVE-2020-25647)

* grub2: Stack buffer overflow in grub_parser_split_cmdline()
(CVE-2020-27749)

* grub2: cutmem command allows privileged user to remove memory regions
when Secure Boot is enabled (CVE-2020-27779)

* grub2: Heap out-of-bounds write in short form option parser
(CVE-2021-20225)

* grub2: Heap out-of-bounds write due to miscalculation of space required
for quoting (CVE-2021-20233)

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.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1873150 - CVE-2020-14372 grub2: acpi command allows privileged user to load crafted ACPI tables when Secure Boot is enabled
1879577 - CVE-2020-25632 grub2: Use-after-free in rmmod command
1886936 - CVE-2020-25647 grub2: Out-of-bounds write in grub_usb_device_initialize()
1899966 - CVE-2020-27749 grub2: Stack buffer overflow in grub_parser_split_cmdline()
1900698 - CVE-2020-27779 grub2: cutmem command allows privileged user to remove memory regions when Secure Boot is enabled
1924696 - CVE-2021-20225 grub2: Heap out-of-bounds write in short form option parser
1926263 - CVE-2021-20233 grub2: Heap out-of-bounds write due to miscalculation of space required for quoting

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
grub2-2.02-0.87.el7_9.2.src.rpm

noarch:
grub2-common-2.02-0.87.el7_9.2.noarch.rpm
grub2-efi-ia32-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-efi-x64-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-pc-modules-2.02-0.87.el7_9.2.noarch.rpm

x86_64:
grub2-2.02-0.87.el7_9.2.x86_64.rpm
grub2-debuginfo-2.02-0.87.el7_9.2.x86_64.rpm
grub2-efi-ia32-2.02-0.87.el7_9.2.x86_64.rpm
grub2-efi-x64-2.02-0.87.el7_9.2.x86_64.rpm
grub2-pc-2.02-0.87.el7_9.2.x86_64.rpm
grub2-tools-2.02-0.87.el7_9.2.x86_64.rpm
grub2-tools-extra-2.02-0.87.el7_9.2.x86_64.rpm
grub2-tools-minimal-2.02-0.87.el7_9.2.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

noarch:
grub2-efi-aa64-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-ppc-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-ppc64-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-ppc64le-modules-2.02-0.87.el7_9.2.noarch.rpm

x86_64:
grub2-debuginfo-2.02-0.87.el7_9.2.x86_64.rpm
grub2-efi-ia32-cdboot-2.02-0.87.el7_9.2.x86_64.rpm
grub2-efi-x64-cdboot-2.02-0.87.el7_9.2.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
grub2-2.02-0.87.el7_9.2.src.rpm

noarch:
grub2-common-2.02-0.87.el7_9.2.noarch.rpm
grub2-efi-ia32-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-efi-x64-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-pc-modules-2.02-0.87.el7_9.2.noarch.rpm

x86_64:
grub2-2.02-0.87.el7_9.2.x86_64.rpm
grub2-debuginfo-2.02-0.87.el7_9.2.x86_64.rpm
grub2-efi-ia32-2.02-0.87.el7_9.2.x86_64.rpm
grub2-efi-x64-2.02-0.87.el7_9.2.x86_64.rpm
grub2-pc-2.02-0.87.el7_9.2.x86_64.rpm
grub2-tools-2.02-0.87.el7_9.2.x86_64.rpm
grub2-tools-extra-2.02-0.87.el7_9.2.x86_64.rpm
grub2-tools-minimal-2.02-0.87.el7_9.2.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

noarch:
grub2-efi-aa64-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-ppc-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-ppc64-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-ppc64le-modules-2.02-0.87.el7_9.2.noarch.rpm

x86_64:
grub2-debuginfo-2.02-0.87.el7_9.2.x86_64.rpm
grub2-efi-ia32-cdboot-2.02-0.87.el7_9.2.x86_64.rpm
grub2-efi-x64-cdboot-2.02-0.87.el7_9.2.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
grub2-2.02-0.87.el7_9.2.src.rpm

noarch:
grub2-common-2.02-0.87.el7_9.2.noarch.rpm
grub2-efi-ia32-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-efi-x64-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-pc-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-ppc64-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-ppc64le-modules-2.02-0.87.el7_9.2.noarch.rpm

ppc64:
grub2-2.02-0.87.el7_9.2.ppc64.rpm
grub2-debuginfo-2.02-0.87.el7_9.2.ppc64.rpm
grub2-ppc64-2.02-0.87.el7_9.2.ppc64.rpm
grub2-tools-2.02-0.87.el7_9.2.ppc64.rpm
grub2-tools-extra-2.02-0.87.el7_9.2.ppc64.rpm
grub2-tools-minimal-2.02-0.87.el7_9.2.ppc64.rpm

ppc64le:
grub2-2.02-0.87.el7_9.2.ppc64le.rpm
grub2-debuginfo-2.02-0.87.el7_9.2.ppc64le.rpm
grub2-ppc64le-2.02-0.87.el7_9.2.ppc64le.rpm
grub2-tools-2.02-0.87.el7_9.2.ppc64le.rpm
grub2-tools-extra-2.02-0.87.el7_9.2.ppc64le.rpm
grub2-tools-minimal-2.02-0.87.el7_9.2.ppc64le.rpm

x86_64:
grub2-2.02-0.87.el7_9.2.x86_64.rpm
grub2-debuginfo-2.02-0.87.el7_9.2.x86_64.rpm
grub2-efi-ia32-2.02-0.87.el7_9.2.x86_64.rpm
grub2-efi-x64-2.02-0.87.el7_9.2.x86_64.rpm
grub2-pc-2.02-0.87.el7_9.2.x86_64.rpm
grub2-tools-2.02-0.87.el7_9.2.x86_64.rpm
grub2-tools-extra-2.02-0.87.el7_9.2.x86_64.rpm
grub2-tools-minimal-2.02-0.87.el7_9.2.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

noarch:
grub2-efi-aa64-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-efi-ia32-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-efi-x64-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-pc-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-ppc-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-ppc64-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-ppc64le-modules-2.02-0.87.el7_9.2.noarch.rpm

x86_64:
grub2-debuginfo-2.02-0.87.el7_9.2.x86_64.rpm
grub2-efi-ia32-cdboot-2.02-0.87.el7_9.2.x86_64.rpm
grub2-efi-x64-cdboot-2.02-0.87.el7_9.2.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
grub2-2.02-0.87.el7_9.2.src.rpm

noarch:
grub2-common-2.02-0.87.el7_9.2.noarch.rpm
grub2-efi-ia32-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-efi-x64-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-pc-modules-2.02-0.87.el7_9.2.noarch.rpm

x86_64:
grub2-2.02-0.87.el7_9.2.x86_64.rpm
grub2-debuginfo-2.02-0.87.el7_9.2.x86_64.rpm
grub2-efi-ia32-2.02-0.87.el7_9.2.x86_64.rpm
grub2-efi-x64-2.02-0.87.el7_9.2.x86_64.rpm
grub2-pc-2.02-0.87.el7_9.2.x86_64.rpm
grub2-tools-2.02-0.87.el7_9.2.x86_64.rpm
grub2-tools-extra-2.02-0.87.el7_9.2.x86_64.rpm
grub2-tools-minimal-2.02-0.87.el7_9.2.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

noarch:
grub2-efi-aa64-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-ppc-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-ppc64-modules-2.02-0.87.el7_9.2.noarch.rpm
grub2-ppc64le-modules-2.02-0.87.el7_9.2.noarch.rpm

x86_64:
grub2-debuginfo-2.02-0.87.el7_9.2.x86_64.rpm
grub2-efi-ia32-cdboot-2.02-0.87.el7_9.2.x86_64.rpm
grub2-efi-x64-cdboot-2.02-0.87.el7_9.2.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-2020-14372
https://access.redhat.com/security/cve/CVE-2020-25632
https://access.redhat.com/security/cve/CVE-2020-25647
https://access.redhat.com/security/cve/CVE-2020-27749
https://access.redhat.com/security/cve/CVE-2020-27779
https://access.redhat.com/security/cve/CVE-2021-20225
https://access.redhat.com/security/cve/CVE-2021-20233
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/security/vulnerabilities/RHSB-2021-003

8. Contact:

The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
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RedHat: RHSA-2021-0699:01 Moderate: grub2 security update

An update for grub2 is now available for Red Hat Enterprise Linux 7

Summary

The grub2 packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices.
Security Fix(es):
* grub2: acpi command allows privileged user to load crafted ACPI tables when Secure Boot is enabled (CVE-2020-14372)
* grub2: Use-after-free in rmmod command (CVE-2020-25632)
* grub2: Out-of-bounds write in grub_usb_device_initialize() (CVE-2020-25647)
* grub2: Stack buffer overflow in grub_parser_split_cmdline() (CVE-2020-27749)
* grub2: cutmem command allows privileged user to remove memory regions when Secure Boot is enabled (CVE-2020-27779)
* grub2: Heap out-of-bounds write in short form option parser (CVE-2021-20225)
* grub2: Heap out-of-bounds write due to miscalculation of space required for quoting (CVE-2021-20233)
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.

Summary

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258

References

https://access.redhat.com/security/cve/CVE-2020-14372 https://access.redhat.com/security/cve/CVE-2020-25632 https://access.redhat.com/security/cve/CVE-2020-25647 https://access.redhat.com/security/cve/CVE-2020-27749 https://access.redhat.com/security/cve/CVE-2020-27779 https://access.redhat.com/security/cve/CVE-2021-20225 https://access.redhat.com/security/cve/CVE-2021-20233 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/security/vulnerabilities/RHSB-2021-003

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: grub2-2.02-0.87.el7_9.2.src.rpm
noarch: grub2-common-2.02-0.87.el7_9.2.noarch.rpm grub2-efi-ia32-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-efi-x64-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-pc-modules-2.02-0.87.el7_9.2.noarch.rpm
x86_64: grub2-2.02-0.87.el7_9.2.x86_64.rpm grub2-debuginfo-2.02-0.87.el7_9.2.x86_64.rpm grub2-efi-ia32-2.02-0.87.el7_9.2.x86_64.rpm grub2-efi-x64-2.02-0.87.el7_9.2.x86_64.rpm grub2-pc-2.02-0.87.el7_9.2.x86_64.rpm grub2-tools-2.02-0.87.el7_9.2.x86_64.rpm grub2-tools-extra-2.02-0.87.el7_9.2.x86_64.rpm grub2-tools-minimal-2.02-0.87.el7_9.2.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
noarch: grub2-efi-aa64-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-ppc-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-ppc64-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-ppc64le-modules-2.02-0.87.el7_9.2.noarch.rpm
x86_64: grub2-debuginfo-2.02-0.87.el7_9.2.x86_64.rpm grub2-efi-ia32-cdboot-2.02-0.87.el7_9.2.x86_64.rpm grub2-efi-x64-cdboot-2.02-0.87.el7_9.2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: grub2-2.02-0.87.el7_9.2.src.rpm
noarch: grub2-common-2.02-0.87.el7_9.2.noarch.rpm grub2-efi-ia32-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-efi-x64-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-pc-modules-2.02-0.87.el7_9.2.noarch.rpm
x86_64: grub2-2.02-0.87.el7_9.2.x86_64.rpm grub2-debuginfo-2.02-0.87.el7_9.2.x86_64.rpm grub2-efi-ia32-2.02-0.87.el7_9.2.x86_64.rpm grub2-efi-x64-2.02-0.87.el7_9.2.x86_64.rpm grub2-pc-2.02-0.87.el7_9.2.x86_64.rpm grub2-tools-2.02-0.87.el7_9.2.x86_64.rpm grub2-tools-extra-2.02-0.87.el7_9.2.x86_64.rpm grub2-tools-minimal-2.02-0.87.el7_9.2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
noarch: grub2-efi-aa64-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-ppc-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-ppc64-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-ppc64le-modules-2.02-0.87.el7_9.2.noarch.rpm
x86_64: grub2-debuginfo-2.02-0.87.el7_9.2.x86_64.rpm grub2-efi-ia32-cdboot-2.02-0.87.el7_9.2.x86_64.rpm grub2-efi-x64-cdboot-2.02-0.87.el7_9.2.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: grub2-2.02-0.87.el7_9.2.src.rpm
noarch: grub2-common-2.02-0.87.el7_9.2.noarch.rpm grub2-efi-ia32-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-efi-x64-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-pc-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-ppc64-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-ppc64le-modules-2.02-0.87.el7_9.2.noarch.rpm
ppc64: grub2-2.02-0.87.el7_9.2.ppc64.rpm grub2-debuginfo-2.02-0.87.el7_9.2.ppc64.rpm grub2-ppc64-2.02-0.87.el7_9.2.ppc64.rpm grub2-tools-2.02-0.87.el7_9.2.ppc64.rpm grub2-tools-extra-2.02-0.87.el7_9.2.ppc64.rpm grub2-tools-minimal-2.02-0.87.el7_9.2.ppc64.rpm
ppc64le: grub2-2.02-0.87.el7_9.2.ppc64le.rpm grub2-debuginfo-2.02-0.87.el7_9.2.ppc64le.rpm grub2-ppc64le-2.02-0.87.el7_9.2.ppc64le.rpm grub2-tools-2.02-0.87.el7_9.2.ppc64le.rpm grub2-tools-extra-2.02-0.87.el7_9.2.ppc64le.rpm grub2-tools-minimal-2.02-0.87.el7_9.2.ppc64le.rpm
x86_64: grub2-2.02-0.87.el7_9.2.x86_64.rpm grub2-debuginfo-2.02-0.87.el7_9.2.x86_64.rpm grub2-efi-ia32-2.02-0.87.el7_9.2.x86_64.rpm grub2-efi-x64-2.02-0.87.el7_9.2.x86_64.rpm grub2-pc-2.02-0.87.el7_9.2.x86_64.rpm grub2-tools-2.02-0.87.el7_9.2.x86_64.rpm grub2-tools-extra-2.02-0.87.el7_9.2.x86_64.rpm grub2-tools-minimal-2.02-0.87.el7_9.2.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
noarch: grub2-efi-aa64-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-efi-ia32-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-efi-x64-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-pc-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-ppc-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-ppc64-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-ppc64le-modules-2.02-0.87.el7_9.2.noarch.rpm
x86_64: grub2-debuginfo-2.02-0.87.el7_9.2.x86_64.rpm grub2-efi-ia32-cdboot-2.02-0.87.el7_9.2.x86_64.rpm grub2-efi-x64-cdboot-2.02-0.87.el7_9.2.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: grub2-2.02-0.87.el7_9.2.src.rpm
noarch: grub2-common-2.02-0.87.el7_9.2.noarch.rpm grub2-efi-ia32-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-efi-x64-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-pc-modules-2.02-0.87.el7_9.2.noarch.rpm
x86_64: grub2-2.02-0.87.el7_9.2.x86_64.rpm grub2-debuginfo-2.02-0.87.el7_9.2.x86_64.rpm grub2-efi-ia32-2.02-0.87.el7_9.2.x86_64.rpm grub2-efi-x64-2.02-0.87.el7_9.2.x86_64.rpm grub2-pc-2.02-0.87.el7_9.2.x86_64.rpm grub2-tools-2.02-0.87.el7_9.2.x86_64.rpm grub2-tools-extra-2.02-0.87.el7_9.2.x86_64.rpm grub2-tools-minimal-2.02-0.87.el7_9.2.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
noarch: grub2-efi-aa64-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-ppc-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-ppc64-modules-2.02-0.87.el7_9.2.noarch.rpm grub2-ppc64le-modules-2.02-0.87.el7_9.2.noarch.rpm
x86_64: grub2-debuginfo-2.02-0.87.el7_9.2.x86_64.rpm grub2-efi-ia32-cdboot-2.02-0.87.el7_9.2.x86_64.rpm grub2-efi-x64-cdboot-2.02-0.87.el7_9.2.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/

Severity

Advisory ID: RHSA-2021:0699-01

Product: Red Hat Enterprise Linux

Advisory URL: https://access.redhat.com/errata/RHSA-2021:0699

Issued Date: : 2021-03-02

CVE Names: CVE-2020-14372 CVE-2020-25632 CVE-2020-25647 CVE-2020-27749 CVE-2020-27779 CVE-2021-20225 CVE-2021-20233

Topic

An update for grub2 is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.