SUSE SLED15 / SLES15 Security Update : grub2 (SUSE-SU-2023:4140-1)

high Nessus Plugin ID 183663

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Synopsis

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

Description

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:4140-1 advisory.

- An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code execution and secure boot protection bypass may be achieved. (CVE-2023-4692) (CVE-2023-4692, CVE-2023-4693)

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 packages.

Plugin Details

Severity: High

ID: 183663

File Name: suse_SU-2023-4140-1.nasl

Version: 1.2

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 10/21/2023

Updated: 11/2/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2023-4692

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

Vulnerability Information

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

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/20/2023

Vulnerability Publication Date: 10/12/2023

Reference Information

CVE: CVE-2023-4692, CVE-2023-4693

SuSE: SUSE-SU-2023:4140-1

Detections

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