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RHEL 9 : grub2 (RHSA-2022:8978)
high Nessus Plugin ID 168710
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Synopsis
The remote Red Hat host is missing one or more security updates for grub2.Description
The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:8978 advisory.The grub2 packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices.
Security Fix(es):
* grub2: Buffer overflow in grub_font_construct_glyph() can lead to out-of-bound write and possible secure boot bypass (CVE-2022-2601)
* grub2: Heap based out-of-bounds write when redering certain unicode sequences (CVE-2022-3775)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Bug Fix(es):
* Kernel Panic on Milan when enable SEV/SEV-ES with CPU: 1 PID: 1 Comm: swapper/0 Not tainted (BZ#2130104)
* [RHEL9.0][SecureBoot][Denali/P10] boot process stops at grub prompt after copying the signed grub to prep partition (BZ#2134358)
* RHEL9.0 [MAXconfig]: Denali LPAR crashs while booting MAX config 240c / 64TB - 192 decimal is the biggest partition min value Linux can handle? (BZ#2134434)
* ISST-LTE:[P10]:RPT:After FW update,while activating the lpar dexlp87 went to ERROR state with LED B2008105 - 7E sub return code (BZ#2135288)
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 RHEL grub2 package based on the guidance in RHSA-2022:8978.See Also
http://www.nessus.org/u?1d2d4cab
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/errata/RHSA-2022:8978
Plugin Details
Severity: High
ID: 168710
File Name: redhat-RHSA-2022-8978.nasl
Version: 1.8
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 12/13/2022
Updated: 11/7/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.3
Vendor
Vendor Severity: Moderate
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2022-2601
CVSS v3
Risk Factor: High
Base Score: 8.6
Temporal Score: 7.7
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:grub2-efi-aa64, p-cpe:/a:redhat:enterprise_linux:grub2-efi-x64-modules, p-cpe:/a:redhat:enterprise_linux:grub2-pc, p-cpe:/a:redhat:enterprise_linux:grub2-pc-modules, p-cpe:/a:redhat:enterprise_linux:grub2-tools-extra, p-cpe:/a:redhat:enterprise_linux:grub2-efi-aa64-cdboot, p-cpe:/a:redhat:enterprise_linux:grub2-ppc64le, p-cpe:/a:redhat:enterprise_linux:grub2-efi-aa64-modules, p-cpe:/a:redhat:enterprise_linux:grub2-tools-efi, p-cpe:/a:redhat:enterprise_linux:grub2-tools, p-cpe:/a:redhat:enterprise_linux:grub2-tools-minimal, p-cpe:/a:redhat:enterprise_linux:grub2-efi-x64-cdboot, p-cpe:/a:redhat:enterprise_linux:grub2-efi-x64, p-cpe:/a:redhat:enterprise_linux:grub2, cpe:/o:redhat:rhel_eus:9.0, p-cpe:/a:redhat:enterprise_linux:grub2-ppc64le-modules, p-cpe:/a:redhat:enterprise_linux:grub2-common
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 12/13/2022
Vulnerability Publication Date: 11/15/2022
Reference Information
CVE: CVE-2022-2601, CVE-2022-3775