# Security update for shim

Announcement ID: SUSE-SU-2024:1462-1  
Rating: important  
References:

  * bsc#1198101
  * bsc#1205588
  * bsc#1205855
  * bsc#1210382
  * bsc#1213945
  * bsc#1215098
  * bsc#1215099
  * bsc#1215100
  * bsc#1215101
  * bsc#1215102
  * bsc#1215103
  * bsc#1219460
  * jsc#PED-922

  
Cross-References:

  * CVE-2022-28737
  * CVE-2023-40546
  * CVE-2023-40547
  * CVE-2023-40548
  * CVE-2023-40549
  * CVE-2023-40550
  * CVE-2023-40551

  
CVSS scores:

  * CVE-2022-28737 ( SUSE ):  8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2022-28737 ( NVD ):  6.5 CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
  * CVE-2023-40546 ( SUSE ):  4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
  * CVE-2023-40546 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2023-40547 ( SUSE ):  7.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
  * CVE-2023-40547 ( NVD ):  8.3 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
  * CVE-2023-40548 ( SUSE ):  6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-40548 ( NVD ):  7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-40549 ( SUSE ):  4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
  * CVE-2023-40549 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2023-40550 ( SUSE ):  4.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H
  * CVE-2023-40550 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
  * CVE-2023-40551 ( SUSE ):  4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
  * CVE-2023-40551 ( NVD ):  5.1 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H

  
Affected Products:

  * SUSE Linux Enterprise High Performance Computing 12 SP5
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
An update that solves seven vulnerabilities, contains one feature and has five
security fixes can now be installed.

## Description:

This update for shim fixes the following issues:

  * Update shim-install to set the TPM2 SRK algorithm (bsc#1213945)
  * Limit the requirement of fde-tpm-helper-macros to the distro with
    suse_version 1600 and above (bsc#1219460)

Update to version 15.8:

Security issues fixed:

  * mok: fix LogError() invocation (bsc#1215099,CVE-2023-40546)
  * avoid incorrectly trusting HTTP headers (bsc#1215098,CVE-2023-40547)
  * Fix integer overflow on SBAT section size on 32-bit system
    (bsc#1215100,CVE-2023-40548)
  * Authenticode: verify that the signature header is in bounds
    (bsc#1215101,CVE-2023-40549)
  * pe: Fix an out-of-bound read in verify_buffer_sbat()
    (bsc#1215102,CVE-2023-40550)
  * pe-relocate: Fix bounds check for MZ binaries (bsc#1215103,CVE-2023-40551)

The NX flag is disable which is same as the default value of shim-15.8, hence,
not need to enable it by this patch now.

  * Generate dbx during build so we don't include binary files in sources
  * Don't require grub so shim can still be used with systemd-boot
  * Update shim-install to fix boot failure of ext4 root file system on RAID10
    (bsc#1205855)
  * Adopt the macros from fde-tpm-helper-macros to update the signature in the
    sealed key after a bootloader upgrade

  * Update shim-install to amend full disk encryption support

  * Adopt TPM 2.0 Key File for grub2 TPM 2.0 protector
  * Use the long name to specify the grub2 key protector
  * cryptodisk: support TPM authorized policies
  * Do not use tpm_record_pcrs unless the command is in command.lst

  * Removed POST_PROCESS_PE_FLAGS=-N from the build command in shim.spec to
    enable the NX compatibility flag when using post-process-pe after discussed
    with grub2 experts in mail. It's useful for further development and testing.
    (bsc#1205588)

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Linux Enterprise Server for SAP Applications 12 SP5  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-2024-1462=1

  * SUSE Linux Enterprise High Performance Computing 12 SP5  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-2024-1462=1

  * SUSE Linux Enterprise Server 12 SP5  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-2024-1462=1

## Package List:

  * SUSE Linux Enterprise Server for SAP Applications 12 SP5 (x86_64)
    * shim-15.8-25.30.1
  * SUSE Linux Enterprise High Performance Computing 12 SP5 (x86_64)
    * shim-15.8-25.30.1
  * SUSE Linux Enterprise Server 12 SP5 (x86_64)
    * shim-15.8-25.30.1

## References:

  * https://www.suse.com/security/cve/CVE-2022-28737.html
  * https://www.suse.com/security/cve/CVE-2023-40546.html
  * https://www.suse.com/security/cve/CVE-2023-40547.html
  * https://www.suse.com/security/cve/CVE-2023-40548.html
  * https://www.suse.com/security/cve/CVE-2023-40549.html
  * https://www.suse.com/security/cve/CVE-2023-40550.html
  * https://www.suse.com/security/cve/CVE-2023-40551.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1198101
  * https://bugzilla.suse.com/show_bug.cgi?id=1205588
  * https://bugzilla.suse.com/show_bug.cgi?id=1205855
  * https://bugzilla.suse.com/show_bug.cgi?id=1210382
  * https://bugzilla.suse.com/show_bug.cgi?id=1213945
  * https://bugzilla.suse.com/show_bug.cgi?id=1215098
  * https://bugzilla.suse.com/show_bug.cgi?id=1215099
  * https://bugzilla.suse.com/show_bug.cgi?id=1215100
  * https://bugzilla.suse.com/show_bug.cgi?id=1215101
  * https://bugzilla.suse.com/show_bug.cgi?id=1215102
  * https://bugzilla.suse.com/show_bug.cgi?id=1215103
  * https://bugzilla.suse.com/show_bug.cgi?id=1219460
  * https://jira.suse.com/browse/PED-922