Security update for grub2 SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2023:1701-1 Final 1 1 2023-03-30T11:13:54Z current 2023-03-30T11:13:54Z 2023-03-30T11:13:54Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for grub2 This security update of grub2 fixes the following issues: - CVE-2022-2601: Fixed buffer overflow in grub_font_construct_glyph (bsc#1205178). - CVE-2022-3775: Fixed integer underflow in blit_comb() (bsc#1205182). - Bump upstream SBAT generation to 3 - rebuild the package with the new secure boot key (bsc#1209188). Other: - Remove zfs modules (bsc#1205554) - Make grub.cfg invariant to efi and legacy platforms (bsc#1205200) The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). Image SLES15-SP3-Micro-5-1-BYOS-Azure-2023-1701,Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM-2023-1701,Image SLES15-SP3-Micro-5-1-BYOS-GCE-2023-1701,SUSE-2023-1701,SUSE-SUSE-MicroOS-5.1-2023-1701 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2023/suse-su-20231701-1/ Link for SUSE-SU-2023:1701-1 https://lists.suse.com/pipermail/sle-security-updates/2023-March/014265.html E-Mail link for SUSE-SU-2023:1701-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1205178 SUSE Bug 1205178 https://bugzilla.suse.com/1205182 SUSE Bug 1205182 https://bugzilla.suse.com/1205200 SUSE Bug 1205200 https://bugzilla.suse.com/1205554 SUSE Bug 1205554 https://bugzilla.suse.com/1209188 SUSE Bug 1209188 https://bugzilla.suse.com/1209829 SUSE Bug 1209829 https://www.suse.com/security/cve/CVE-2022-2601/ SUSE CVE CVE-2022-2601 page https://www.suse.com/security/cve/CVE-2022-3775/ SUSE CVE CVE-2022-3775 page Image SLES15-SP3-Micro-5-1-BYOS-Azure Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM Image SLES15-SP3-Micro-5-1-BYOS-GCE SUSE Linux Enterprise Micro 5.1 grub2-2.04-150300.3.8.1 grub2-i386-pc-2.04-150300.3.8.1 grub2-x86_64-efi-2.04-150300.3.8.1 grub2-x86_64-xen-2.04-150300.3.8.1 grub2-arm64-efi-2.04-150300.3.8.1 grub2-arm64-efi-debug-2.04-150300.3.8.1 grub2-arm64-efi-extras-2.04-150300.3.8.1 grub2-branding-upstream-2.04-150300.3.8.1 grub2-i386-pc-debug-2.04-150300.3.8.1 grub2-i386-pc-extras-2.04-150300.3.8.1 grub2-powerpc-ieee1275-2.04-150300.3.8.1 grub2-powerpc-ieee1275-debug-2.04-150300.3.8.1 grub2-powerpc-ieee1275-extras-2.04-150300.3.8.1 grub2-s390x-emu-2.04-150300.3.8.1 grub2-s390x-emu-debug-2.04-150300.3.8.1 grub2-s390x-emu-extras-2.04-150300.3.8.1 grub2-snapper-plugin-2.04-150300.3.8.1 grub2-systemd-sleep-plugin-2.04-150300.3.8.1 grub2-x86_64-efi-debug-2.04-150300.3.8.1 grub2-x86_64-efi-extras-2.04-150300.3.8.1 grub2-x86_64-xen-extras-2.04-150300.3.8.1 grub2-2.04-150300.3.8.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-Azure grub2-i386-pc-2.04-150300.3.8.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-Azure grub2-x86_64-efi-2.04-150300.3.8.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-Azure grub2-2.04-150300.3.8.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM grub2-i386-pc-2.04-150300.3.8.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM grub2-x86_64-efi-2.04-150300.3.8.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM grub2-x86_64-xen-2.04-150300.3.8.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM grub2-2.04-150300.3.8.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-GCE grub2-i386-pc-2.04-150300.3.8.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-GCE grub2-x86_64-efi-2.04-150300.3.8.1 as a component of Image SLES15-SP3-Micro-5-1-BYOS-GCE grub2-2.04-150300.3.8.1 as a component of SUSE Linux Enterprise Micro 5.1 grub2-arm64-efi-2.04-150300.3.8.1 as a component of SUSE Linux Enterprise Micro 5.1 grub2-i386-pc-2.04-150300.3.8.1 as a component of SUSE Linux Enterprise Micro 5.1 grub2-s390x-emu-2.04-150300.3.8.1 as a component of SUSE Linux Enterprise Micro 5.1 grub2-snapper-plugin-2.04-150300.3.8.1 as a component of SUSE Linux Enterprise Micro 5.1 grub2-x86_64-efi-2.04-150300.3.8.1 as a component of SUSE Linux Enterprise Micro 5.1 grub2-x86_64-xen-2.04-150300.3.8.1 as a component of SUSE Linux Enterprise Micro 5.1 A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism. CVE-2022-2601 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-i386-pc-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-x86_64-efi-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-i386-pc-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-efi-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-xen-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-i386-pc-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-x86_64-efi-2.04-150300.3.8.1 SUSE Linux Enterprise Micro 5.1:grub2-2.04-150300.3.8.1 SUSE Linux Enterprise Micro 5.1:grub2-arm64-efi-2.04-150300.3.8.1 SUSE Linux Enterprise Micro 5.1:grub2-i386-pc-2.04-150300.3.8.1 SUSE Linux Enterprise Micro 5.1:grub2-s390x-emu-2.04-150300.3.8.1 SUSE Linux Enterprise Micro 5.1:grub2-snapper-plugin-2.04-150300.3.8.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-efi-2.04-150300.3.8.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-xen-2.04-150300.3.8.1 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2023/suse-su-20231701-1/ https://www.suse.com/security/cve/CVE-2022-2601.html CVE-2022-2601 https://bugzilla.suse.com/1205178 SUSE Bug 1205178 When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and height is constrained within bitmap size. As consequence an attacker can craft an input which will lead to a out-of-bounds write into grub2's heap, leading to memory corruption and availability issues. Although complex, arbitrary code execution could not be discarded. CVE-2022-3775 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-i386-pc-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-Azure:grub2-x86_64-efi-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-i386-pc-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-efi-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM:grub2-x86_64-xen-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-i386-pc-2.04-150300.3.8.1 Image SLES15-SP3-Micro-5-1-BYOS-GCE:grub2-x86_64-efi-2.04-150300.3.8.1 SUSE Linux Enterprise Micro 5.1:grub2-2.04-150300.3.8.1 SUSE Linux Enterprise Micro 5.1:grub2-arm64-efi-2.04-150300.3.8.1 SUSE Linux Enterprise Micro 5.1:grub2-i386-pc-2.04-150300.3.8.1 SUSE Linux Enterprise Micro 5.1:grub2-s390x-emu-2.04-150300.3.8.1 SUSE Linux Enterprise Micro 5.1:grub2-snapper-plugin-2.04-150300.3.8.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-efi-2.04-150300.3.8.1 SUSE Linux Enterprise Micro 5.1:grub2-x86_64-xen-2.04-150300.3.8.1 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2023/suse-su-20231701-1/ https://www.suse.com/security/cve/CVE-2022-3775.html CVE-2022-3775 https://bugzilla.suse.com/1205182 SUSE Bug 1205182