SUSE-SU-2025:20136-1: important: Security update for pcr-oracle, shim

Wed Jun 4 08:53:15 UTC 2025

# Security update for pcr-oracle, shim

Announcement ID: SUSE-SU-2025:20136-1  
Release Date: 2025-03-07T15:31:39Z  
Rating: important  
References:

  * bsc#1215098
  * bsc#1215099
  * bsc#1215100
  * bsc#1215101
  * bsc#1215102
  * bsc#1215103
  * bsc#1230316

Cross-References:

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

CVSS scores:

  * 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-2023-40546 ( NVD ):  6.2 CVSS:3.1/AV:L/AC:L/PR:N/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-2023-40547 ( 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-2023-40548 ( 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-2023-40549 ( NVD ):  6.2 CVSS:3.1/AV:L/AC:L/PR:N/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-2023-40550 ( 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
  * 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 Micro 6.0

An update that solves six vulnerabilities and has one fix can now be installed.

## Description:

This update for pcr-oracle, shim fixes the following issues:

pcr-oracle:

  * predict SbatLevelRT for the next boot (bsc#1230316)

shim was updated to version 15.8:

  * Update shim-install to use the 'removable' way for encrypted SL-Micro images
    (bsc#1230316)
  * Always use the removable way for SL-Micro
  * Limit the removable option to encrypted SL-Micro

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)

## 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 Micro 6.0  
    zypper in -t patch SUSE-SLE-Micro-6.0-225=1

## Package List:

  * SUSE Linux Micro 6.0 (aarch64 x86_64)
    * shim-15.8-1.1
    * pcr-oracle-debugsource-0.4.6-2.1
    * pcr-oracle-0.4.6-2.1
    * pcr-oracle-debuginfo-0.4.6-2.1
    * shim-debugsource-15.8-1.1
    * shim-debuginfo-15.8-1.1

## References:

  * 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=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=1230316

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