SUSE SLES15 Security Update : shim (SUSE-SU-2024:1461-1)

high Nessus Plugin ID 194744

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES15 / SLES_SAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:1461-1 advisory.

- 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)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected shim package.

Plugin Details

Severity: High

ID: 194744

File Name: suse_SU-2024-1461-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 4/30/2024

Updated: 6/25/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.49

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2022-28737

CVSS v3

Risk Factor: High

Base Score: 8.3

Temporal Score: 7.2

Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2023-40547

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:shim, cpe:/o:novell:suse_linux:15

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 4/29/2024

Vulnerability Publication Date: 6/16/2022

Reference Information

CVE: CVE-2022-28737, CVE-2023-40546, CVE-2023-40547, CVE-2023-40548, CVE-2023-40549, CVE-2023-40550, CVE-2023-40551

SuSE: SUSE-SU-2024:1461-1

Detections

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