openSUSE Security Update: Security update for grub2 ______________________________________________________________________________ Announcement ID: openSUSE-SU-2021:0462-1 Rating: important References: #1175970 #1176711 #1177883 #1179264 #1179265 #1182057 #1182262 #1182263 #1183073 Cross-References: CVE-2020-14372 CVE-2020-25632 CVE-2020-25647 CVE-2020-27749 CVE-2020-27779 CVE-2021-20225 CVE-2021-20233 CVSS scores: CVE-2020-14372 (NVD) : 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2020-14372 (SUSE): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2020-25632 (NVD) : 8.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2020-25632 (SUSE): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2020-25647 (NVD) : 7.6 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H CVE-2020-25647 (SUSE): 7.6 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H CVE-2020-27749 (NVD) : 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-27749 (SUSE): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2020-27779 (NVD) : 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2020-27779 (SUSE): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2021-20225 (NVD) : 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2021-20225 (SUSE): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2021-20233 (NVD) : 8.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2021-20233 (SUSE): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H Affected Products: openSUSE Leap 15.2 ______________________________________________________________________________ An update that solves 7 vulnerabilities and has two fixes is now available. Description: This update for grub2 fixes the following issues: grub2 implements the new "SBAT" method for SHIM based secure boot revocation. (bsc#1182057) - CVE-2020-25632: Fixed a use-after-free in rmmod command (bsc#1176711) - CVE-2020-25647: Fixed an out-of-bound write in grub_usb_device_initialize() (bsc#1177883) - CVE-2020-27749: Fixed a stack buffer overflow in grub_parser_split_cmdline (bsc#1179264) - CVE-2020-27779, CVE-2020-14372: Disallow cutmem and acpi commands in secure boot mode (bsc#1179265 bsc#1175970) - CVE-2021-20225: Fixed a heap out-of-bounds write in short form option parser (bsc#1182262) - CVE-2021-20233: Fixed a heap out-of-bound write due to mis-calculation of space required for quoting (bsc#1182263) - Fixed chainloading windows on dual boot machine (bsc#1183073) This update was imported from the SUSE:SLE-15-SP2:Update update project. Patch Instructions: To install this openSUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - openSUSE Leap 15.2: zypper in -t patch openSUSE-2021-462=1 Package List: - openSUSE Leap 15.2 (i586 x86_64): grub2-2.04-lp152.7.22.7 grub2-branding-upstream-2.04-lp152.7.22.7 grub2-debuginfo-2.04-lp152.7.22.7 grub2-debugsource-2.04-lp152.7.22.7 - openSUSE Leap 15.2 (noarch): grub2-i386-efi-2.04-lp152.7.22.7 grub2-i386-efi-debug-2.04-lp152.7.22.7 grub2-i386-pc-2.04-lp152.7.22.7 grub2-i386-pc-debug-2.04-lp152.7.22.7 grub2-i386-xen-2.04-lp152.7.22.7 grub2-snapper-plugin-2.04-lp152.7.22.7 grub2-systemd-sleep-plugin-2.04-lp152.7.22.7 grub2-x86_64-efi-2.04-lp152.7.22.7 grub2-x86_64-efi-debug-2.04-lp152.7.22.7 grub2-x86_64-xen-2.04-lp152.7.22.7 References: https://www.suse.com/security/cve/CVE-2020-14372.html https://www.suse.com/security/cve/CVE-2020-25632.html https://www.suse.com/security/cve/CVE-2020-25647.html https://www.suse.com/security/cve/CVE-2020-27749.html https://www.suse.com/security/cve/CVE-2020-27779.html https://www.suse.com/security/cve/CVE-2021-20225.html https://www.suse.com/security/cve/CVE-2021-20233.html https://bugzilla.suse.com/1175970 https://bugzilla.suse.com/1176711 https://bugzilla.suse.com/1177883 https://bugzilla.suse.com/1179264 https://bugzilla.suse.com/1179265 https://bugzilla.suse.com/1182057 https://bugzilla.suse.com/1182262 https://bugzilla.suse.com/1182263 https://bugzilla.suse.com/1183073