-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: grub2 security update Advisory ID: RHSA-2021:0700-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0700 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 7.7 Extended 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 ComputeNode EUS (v. 7.7) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) - noarch, x86_64 Red Hat Enterprise Linux Server EUS (v. 7.7) - noarch, ppc64, ppc64le, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 7.7) - 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 ComputeNode EUS (v. 7.7): Source: grub2-2.02-0.86.el7_7.3.src.rpm noarch: grub2-common-2.02-0.86.el7_7.3.noarch.rpm grub2-efi-ia32-modules-2.02-0.86.el7_7.3.noarch.rpm grub2-efi-x64-modules-2.02-0.86.el7_7.3.noarch.rpm grub2-pc-modules-2.02-0.86.el7_7.3.noarch.rpm x86_64: grub2-2.02-0.86.el7_7.3.x86_64.rpm grub2-debuginfo-2.02-0.86.el7_7.3.x86_64.rpm grub2-efi-ia32-2.02-0.86.el7_7.3.x86_64.rpm grub2-efi-x64-2.02-0.86.el7_7.3.x86_64.rpm grub2-pc-2.02-0.86.el7_7.3.x86_64.rpm grub2-tools-2.02-0.86.el7_7.3.x86_64.rpm grub2-tools-extra-2.02-0.86.el7_7.3.x86_64.rpm grub2-tools-minimal-2.02-0.86.el7_7.3.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7): noarch: grub2-efi-aa64-modules-2.02-0.86.el7_7.3.noarch.rpm grub2-ppc-modules-2.02-0.86.el7_7.3.noarch.rpm grub2-ppc64-modules-2.02-0.86.el7_7.3.noarch.rpm grub2-ppc64le-modules-2.02-0.86.el7_7.3.noarch.rpm x86_64: grub2-debuginfo-2.02-0.86.el7_7.3.x86_64.rpm grub2-efi-ia32-cdboot-2.02-0.86.el7_7.3.x86_64.rpm grub2-efi-x64-cdboot-2.02-0.86.el7_7.3.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.7): Source: grub2-2.02-0.86.el7_7.3.src.rpm noarch: grub2-common-2.02-0.86.el7_7.3.noarch.rpm grub2-efi-ia32-modules-2.02-0.86.el7_7.3.noarch.rpm grub2-efi-x64-modules-2.02-0.86.el7_7.3.noarch.rpm grub2-pc-modules-2.02-0.86.el7_7.3.noarch.rpm grub2-ppc64-modules-2.02-0.86.el7_7.3.noarch.rpm grub2-ppc64le-modules-2.02-0.86.el7_7.3.noarch.rpm ppc64: grub2-2.02-0.86.el7_7.3.ppc64.rpm grub2-debuginfo-2.02-0.86.el7_7.3.ppc64.rpm grub2-ppc64-2.02-0.86.el7_7.3.ppc64.rpm grub2-tools-2.02-0.86.el7_7.3.ppc64.rpm grub2-tools-extra-2.02-0.86.el7_7.3.ppc64.rpm grub2-tools-minimal-2.02-0.86.el7_7.3.ppc64.rpm ppc64le: grub2-2.02-0.86.el7_7.3.ppc64le.rpm grub2-debuginfo-2.02-0.86.el7_7.3.ppc64le.rpm grub2-ppc64le-2.02-0.86.el7_7.3.ppc64le.rpm grub2-tools-2.02-0.86.el7_7.3.ppc64le.rpm grub2-tools-extra-2.02-0.86.el7_7.3.ppc64le.rpm grub2-tools-minimal-2.02-0.86.el7_7.3.ppc64le.rpm x86_64: grub2-2.02-0.86.el7_7.3.x86_64.rpm grub2-debuginfo-2.02-0.86.el7_7.3.x86_64.rpm grub2-efi-ia32-2.02-0.86.el7_7.3.x86_64.rpm grub2-efi-x64-2.02-0.86.el7_7.3.x86_64.rpm grub2-pc-2.02-0.86.el7_7.3.x86_64.rpm grub2-tools-2.02-0.86.el7_7.3.x86_64.rpm grub2-tools-extra-2.02-0.86.el7_7.3.x86_64.rpm grub2-tools-minimal-2.02-0.86.el7_7.3.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 7.7): noarch: grub2-efi-aa64-modules-2.02-0.86.el7_7.3.noarch.rpm grub2-efi-ia32-modules-2.02-0.86.el7_7.3.noarch.rpm grub2-efi-x64-modules-2.02-0.86.el7_7.3.noarch.rpm grub2-pc-modules-2.02-0.86.el7_7.3.noarch.rpm grub2-ppc-modules-2.02-0.86.el7_7.3.noarch.rpm grub2-ppc64-modules-2.02-0.86.el7_7.3.noarch.rpm grub2-ppc64le-modules-2.02-0.86.el7_7.3.noarch.rpm x86_64: grub2-debuginfo-2.02-0.86.el7_7.3.x86_64.rpm grub2-efi-ia32-cdboot-2.02-0.86.el7_7.3.x86_64.rpm grub2-efi-x64-cdboot-2.02-0.86.el7_7.3.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. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYD6lgtzjgjWX9erEAQhmpQ//b1t82xo1CgJbk/Q7n0S3OQGCDEdkoapK ZWq+CGlawzzNdnIOAde+RZYBv5mZ9tjBPCgfAtc9UvQaw1rnGPR/Jf/t1QDuWYXt Qb3aNsFr4GeJKIBcs3PEzzfTLSsrTr/snSgpF20I0z4r1JpueP0b0iYc6vyYXet7 LYlRbZ98ZuY52cVZ1WyCjYG8uiGZ67klwz3AOC3Dr2eG3RxLodODSMqHzZ0H3yCx 7nWTJrNQJndFVTk0EwPQvECUytZVdTdwBQYIL5SUhRXKj4Odd10Co7HckIJ3eA70 Syyq/kKLKxA5GJkw/ZgriPV6GQby6KowownnJipxl3WHE9imGn5N004eq1vr3Z5z XkdYN8XI07XU6uUnrSFPnM1XFlMw08/94V3nasUt6CQm8uDcl3tqWOssMP0vPt3a I1Pa5QQonFWZrC2LoSeyETrh0egnBf727AtzrMFfYWASGSBCCzHlVA6iUcxObVLz IO5b21lVoRHMB8J7TjmCUJK3hf3rt6ktUyAP56iV+2IdFUIBpoeLuXmRqnmz5+Xg FWHQrG2jUjQWyuESDNd1haLb12NKrnIOCFf4gSu/gIaIMtX9/f79lAi3n5N69Slc WTFIUHAAWwbXo1W6g7cSfw6nn0G0aGM+In7a88DABSMbhVWheqUBmB68Lc7LQPYn myzSAgM35V4= =0hIn -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce