SUSE SLED15 / SLES15 Security Update : grub2 (SUSE-SU-2020:2074-1)

High Nessus Plugin ID 139174

Synopsis

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

Description

This update for grub2 fixes the following issues :

Fix for CVE-2020-10713 (bsc#1168994)

Fix for CVE-2020-14308 CVE-2020-14309, CVE-2020-14310, CVE-2020-14311 (bsc#1173812)

Fix for CVE-2020-15706 (bsc#1174463)

Fix for CVE-2020-15707 (bsc#1174570)

Use overflow checking primitives where the arithmetic expression for buffer

Use grub_calloc for overflow check and return NULL when it would occur

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Module for Server Applications 15-SP2 :

zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP2-2020-2074=1

SUSE Linux Enterprise Module for Basesystem 15-SP2 :

zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP2-2020-2074=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1168994

https://bugzilla.suse.com/show_bug.cgi?id=1173812

https://bugzilla.suse.com/show_bug.cgi?id=1174463

https://bugzilla.suse.com/show_bug.cgi?id=1174570

https://www.suse.com/security/cve/CVE-2020-10713/

https://www.suse.com/security/cve/CVE-2020-14308/

https://www.suse.com/security/cve/CVE-2020-14309/

https://www.suse.com/security/cve/CVE-2020-14310/

https://www.suse.com/security/cve/CVE-2020-14311/

https://www.suse.com/security/cve/CVE-2020-15706/

https://www.suse.com/security/cve/CVE-2020-15707/

http://www.nessus.org/u?a6a603b7

Plugin Details

Severity: High

ID: 139174

File Name: suse_SU-2020-2074-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 2020/07/30

Updated: 2020/08/06

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.5

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/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, p-cpe:/a:novell:suse_linux:grub2-debuginfo, p-cpe:/a:novell:suse_linux:grub2-debugsource, p-cpe:/a:novell:suse_linux:grub2-s390x-emu, 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: 2020/07/29

Vulnerability Publication Date: 2020/07/29

Reference Information

CVE: CVE-2020-10713, CVE-2020-14308, CVE-2020-14309, CVE-2020-14310, CVE-2020-14311, CVE-2020-15706, CVE-2020-15707

IAVA: 2020-A-0349