Detections
Analytics

SUSE SLES11 Security Update : grub2 (SUSE-SU-2020:14461-1)

medium Nessus Plugin ID 150591

Language:

Synopsis

The remote SUSE host is missing a security update.

Description

The remote SUSE Linux SLES11 host has packages installed that are affected by a vulnerability as referenced in the SUSE- SU-2020:14461-1 advisory.

 - GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim. This issue affects GRUB2 version 2.04 and prior versions. (CVE-2020-15705)

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 grub2-x86_64-efi and / or grub2-x86_64-xen packages.

See Also

https://bugzilla.suse.com/1174421

http://www.nessus.org/u?9d5daf50

https://www.suse.com/security/cve/CVE-2020-15705

Plugin Details

Severity: Medium

ID: 150591

File Name: suse_SU-2020-14461-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 6/10/2021

Updated: 12/6/2022

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 3.3

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

CVSS Score Source: CVE-2020-15705

CVSS v3

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5.6

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:grub2-x86_64-xen, p-cpe:/a:novell:suse_linux:grub2-x86_64-efi, cpe:/o:novell:suse_linux:11

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: 8/25/2020

Vulnerability Publication Date: 7/29/2020

Reference Information

CVE: CVE-2020-15705

IAVA: 2020-A-0349

SuSE: SUSE-SU-2020:14461-1