SUSE SLED15 / SLES15 : Recommended update for grub2 (SUSE-SU-2025:02813-1)

medium Nessus Plugin ID 250303

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Synopsis

The remote SUSE host is missing a security update.

Description

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2025:02813-1 advisory.

- CVE-2024-56738: Fixed side-channel attack due to not constant-time algorithm in grub_crypto_memcmp (bsc#1234959)

Other fixes:
- Fix test -f and -s do not work properly over the network files served via tftp and http (bsc#1246157, bsc#1246237)
- Skip mount point in grub_find_device function (bsc#1246231)

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

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

Solution

Update the affected packages.

Plugin Details

Severity: Medium

ID: 250303

File Name: suse_SU-2025-02813-1.nasl

Version: 1.1

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 8/16/2025

Updated: 8/16/2025

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Low

Base Score: 3.8

Temporal Score: 2.8

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

CVSS Score Source: CVE-2024-56738

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:grub2-arm64-efi, p-cpe:/a:novell:suse_linux:grub2-x86_64-xen, p-cpe:/a:novell:suse_linux:grub2-s390x-emu, p-cpe:/a:novell:suse_linux:grub2-snapper-plugin, p-cpe:/a:novell:suse_linux:grub2, p-cpe:/a:novell:suse_linux:grub2-systemd-sleep-plugin, p-cpe:/a:novell:suse_linux:grub2-x86_64-efi, p-cpe:/a:novell:suse_linux:grub2-i386-pc, cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:grub2-powerpc-ieee1275

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: 8/15/2025

Vulnerability Publication Date: 12/29/2024

Reference Information

CVE: CVE-2024-56738

SuSE: SUSE-SU-2025:02813-1

Detections

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