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Red Hat 7.2: RHSA-2021:0705-02 Moderate: Grub2 Security Update

An update for grub2 is now available for Red Hat Enterprise Linux 7.2 Advanced Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Moderate: grub2 security update Advisory ID: RHSA-2021:0704-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0704 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 7.2 Advanced Update Support. 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 Server AUS (v. 7.2) - noarch, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 7.2) - 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 ingrub_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 Server AUS (v.7.2): Source: grub2-2.02-0.86.el7_2.2.src.rpm noarch: grub2-common-2.02-0.86.el7_2.2.noarch.rpm grub2-efi-ia32-modules-2.02-0.86.el7_2.2.noarch.rpm grub2-efi-x64-modules-2.02-0.86.el7_2.2.noarch.rpm grub2-pc-modules-2.02-0.86.el7_2.2.noarch.rpm grub2-ppc64-modules-2.02-0.86.el7_2.2.noarch.rpm grub2-ppc64le-modules-2.02-0.86.el7_2.2.noarch.rpm x86_64: grub2-2.02-0.86.el7_2.2.x86_64.rpm grub2-debuginfo-2.02-0.86.el7_2.2.x86_64.rpm grub2-efi-ia32-2.02-0.86.el7_2.2.x86_64.rpm grub2-efi-x64-2.02-0.86.el7_2.2.x86_64.rpm grub2-pc-2.02-0.86.el7_2.2.x86_64.rpm grub2-tools-2.02-0.86.el7_2.2.x86_64.rpm grub2-tools-extra-2.02-0.86.el7_2.2.x86_64.rpm grub2-tools-minimal-2.02-0.86.el7_2.2.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 7.2): Source: grub2-2.02-0.86.el7_2.2.src.rpm noarch: grub2-efi-aa64-modules-2.02-0.86.el7_2.2.noarch.rpm grub2-efi-ia32-modules-2.02-0.86.el7_2.2.noarch.rpm grub2-efi-x64-modules-2.02-0.86.el7_2.2.noarch.rpm grub2-pc-modules-2.02-0.86.el7_2.2.noarch.rpm grub2-ppc-modules-2.02-0.86.el7_2.2.noarch.rpm grub2-ppc64-modules-2.02-0.86.el7_2.2.noarch.rpm grub2-ppc64le-modules-2.02-0.86.el7_2.2.noarch.rpm x86_64: grub2-debuginfo-2.02-0.86.el7_2.2.x86_64.rpm grub2-efi-ia32-cdboot-2.02-0.86.el7_2.2.x86_64.rpm grub2-efi-x64-cdboot-2.02-0.86.el7_2.2.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 securitycontact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYD6YJtzjgjWX9erEAQg8zg/+K9Nxj62aJ3zL9sLKG+Bm8m9ixLFeC3vQ cjVvqwzhQ4S7lP38Gl8f4TODqYvQ3/Pn1tCSCk+dY+oTEUUR7WlEPbgLHEQYPAVs Tp5Ik1hLuyaSI8dgvW9U7reqCQa4vyGpX37Sg8bjOreE6rjY8nAqRbk07BB8rEAl ohNy2xLph5d/uRxnl6AsUrvDsWGj0z9AcN7olXu6yBfyZKwPeqlQpkyXKuBLipAD ZZcY9heJ4xmH5i2Zfr0O9RFxIFamXsMOwmZ4dHOQ7CAOnGcDYOvqwewz3u3h1n+r HOP2pFR8FxZ0GfUBVlT84nucuM4ZV7FJf9jC2pLVDV4SbFq1zlN45gfUcb/DvLcI 9TuhycawRaL+I6rWUlmiC7yFSpd7iBV7nyH7cu6jJ1+h3ewFVO5xaLgPbBkcEK0o vjt/AGOZT3i2A++lmxhQWwkSgC2UG93DhkJDP6M4eNYIADOHqRS9e+54JuOdUEoC Aw6FoLe4Yabe0EarNrSG1Jo9TicqpNe36JzYycuqCrULGbVBZeuVuOAmkx9wb1Xf ghvRRFG3iEm6sOMW+kF4CyuvQKvwkY/6uxnQSXfjS5CGi+vCemnlEHWq11KIQWG9 dA/bPLuABmvypMOhxl7zYz9tB3WJ2BuEK/mK4gk59ZNwjuw9n12J8Xd9CYoX/XPJ mTAkS236GUo=zwNV -----END PGP SIGNATURE----- -- RHSA-announce mailing list This email address is being protected from spambots. You need JavaScript enabled to view it. https://listman.redhat.com/mailman/listinfo/rhsa-announce . The Blue Shield notice describes the crucial patch for grub2, addressing vulnerabilities and remedies for the end users.. Grub2 Update, Red Hat Security, Linux Boot Loader, Update Advisory. . LinuxSecurity.com Team

Mar 02, 2021 Red Hat