SUSE Security Update: Security update for grub2
______________________________________________________________________________

Announcement ID:    SUSE-SU-2022:2035-1
Rating:             important
References:         #1191184 #1191185 #1191186 #1193282 #1197948 
                    #1198460 #1198493 #1198495 #1198496 #1198581 
                    
Cross-References:   CVE-2021-3695 CVE-2021-3696 CVE-2021-3697
                    CVE-2022-28733 CVE-2022-28734 CVE-2022-28735
                    CVE-2022-28736
CVSS scores:
                    CVE-2021-3695 (SUSE): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
                    CVE-2021-3696 (SUSE): 5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
                    CVE-2021-3697 (SUSE): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
                    CVE-2022-28733 (SUSE): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
                    CVE-2022-28735 (SUSE): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-28736 (SUSE): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products:
                    SUSE Linux Enterprise Desktop 15-SP4
                    SUSE Linux Enterprise High Performance Computing 15-SP4
                    SUSE Linux Enterprise Module for Basesystem 15-SP4
                    SUSE Linux Enterprise Module for SUSE Manager Proxy 4.3
                    SUSE Linux Enterprise Module for Server Applications 15-SP4
                    SUSE Linux Enterprise Server 15-SP4
                    SUSE Linux Enterprise Server for SAP Applications 15-SP4
                    SUSE Manager Proxy 4.3
                    openSUSE Leap 15.4
______________________________________________________________________________

   An update that solves 7 vulnerabilities and has three fixes
   is now available.

Description:

   This update for grub2 fixes the following issues:

   This update provides security fixes and hardenings for Boothole 3 /
   Boothole 2022 (bsc#1198581)

   - CVE-2021-3695: Fixed that a crafted PNG grayscale image could lead to
     out-of-bounds write in heap (bsc#1191184)
   - CVE-2021-3696: Fixed that a crafted PNG image could lead to out-of-bound
     write during huffman table handling (bsc#1191185)
   - CVE-2021-3697: Fixed that a crafted JPEG image could lead to buffer
     underflow write in the heap (bsc#1191186)
   - CVE-2022-28733: Fixed fragmentation math in net/ip (bsc#1198460)
   - CVE-2022-28734: Fixed an out-of-bound write for split http headers
     (bsc#1198493)
   - CVE-2022-28735: Fixed some verifier framework changes (bsc#1198495)
   - CVE-2022-28736: Fixed a use-after-free in chainloader command
     (bsc#1198496)
   - Update SBAT security contact (bsc#1193282)
   - Bump grub's SBAT generation to 2

   - Use boot disks in OpenFirmware, fixing regression caused when the root
     LV is completely in the boot LUN (bsc#1197948)


Patch Instructions:

   To install this SUSE 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 15.4:

      zypper in -t patch openSUSE-SLE-15.4-2022-2035=1

   - SUSE Linux Enterprise Module for Server Applications 15-SP4:

      zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP4-2022-2035=1

   - SUSE Linux Enterprise Module for SUSE Manager Proxy 4.3:

      zypper in -t patch SUSE-SLE-Module-SUSE-Manager-Proxy-4.3-2022-2035=1

   - SUSE Linux Enterprise Module for Basesystem 15-SP4:

      zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP4-2022-2035=1



Package List:

   - openSUSE Leap 15.4 (aarch64 ppc64le s390x x86_64):

      grub2-2.06-150400.11.5.2
      grub2-branding-upstream-2.06-150400.11.5.2
      grub2-debuginfo-2.06-150400.11.5.2

   - openSUSE Leap 15.4 (aarch64 s390x x86_64):

      grub2-debugsource-2.06-150400.11.5.2

   - openSUSE Leap 15.4 (noarch):

      grub2-arm64-efi-2.06-150400.11.5.2
      grub2-arm64-efi-debug-2.06-150400.11.5.2
      grub2-i386-pc-2.06-150400.11.5.2
      grub2-i386-pc-debug-2.06-150400.11.5.2
      grub2-powerpc-ieee1275-2.06-150400.11.5.2
      grub2-powerpc-ieee1275-debug-2.06-150400.11.5.2
      grub2-snapper-plugin-2.06-150400.11.5.2
      grub2-systemd-sleep-plugin-2.06-150400.11.5.2
      grub2-x86_64-efi-2.06-150400.11.5.2
      grub2-x86_64-efi-debug-2.06-150400.11.5.2
      grub2-x86_64-xen-2.06-150400.11.5.2

   - openSUSE Leap 15.4 (s390x):

      grub2-s390x-emu-2.06-150400.11.5.2
      grub2-s390x-emu-debug-2.06-150400.11.5.2

   - SUSE Linux Enterprise Module for Server Applications 15-SP4 (noarch):

      grub2-x86_64-xen-2.06-150400.11.5.2

   - SUSE Linux Enterprise Module for SUSE Manager Proxy 4.3 (noarch):

      grub2-arm64-efi-2.06-150400.11.5.2

   - SUSE Linux Enterprise Module for Basesystem 15-SP4 (aarch64 ppc64le s390x x86_64):

      grub2-2.06-150400.11.5.2
      grub2-debuginfo-2.06-150400.11.5.2

   - SUSE Linux Enterprise Module for Basesystem 15-SP4 (aarch64 s390x x86_64):

      grub2-debugsource-2.06-150400.11.5.2

   - SUSE Linux Enterprise Module for Basesystem 15-SP4 (noarch):

      grub2-arm64-efi-2.06-150400.11.5.2
      grub2-i386-pc-2.06-150400.11.5.2
      grub2-powerpc-ieee1275-2.06-150400.11.5.2
      grub2-snapper-plugin-2.06-150400.11.5.2
      grub2-systemd-sleep-plugin-2.06-150400.11.5.2
      grub2-x86_64-efi-2.06-150400.11.5.2

   - SUSE Linux Enterprise Module for Basesystem 15-SP4 (s390x):

      grub2-s390x-emu-2.06-150400.11.5.2


References:

   https://www.suse.com/security/cve/CVE-2021-3695.html
   https://www.suse.com/security/cve/CVE-2021-3696.html
   https://www.suse.com/security/cve/CVE-2021-3697.html
   https://www.suse.com/security/cve/CVE-2022-28733.html
   https://www.suse.com/security/cve/CVE-2022-28734.html
   https://www.suse.com/security/cve/CVE-2022-28735.html
   https://www.suse.com/security/cve/CVE-2022-28736.html
   https://bugzilla.suse.com/1191184
   https://bugzilla.suse.com/1191185
   https://bugzilla.suse.com/1191186
   https://bugzilla.suse.com/1193282
   https://bugzilla.suse.com/1197948
   https://bugzilla.suse.com/1198460
   https://bugzilla.suse.com/1198493
   https://bugzilla.suse.com/1198495
   https://bugzilla.suse.com/1198496
   https://bugzilla.suse.com/1198581