SUSE update for grub2



Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2022-2601
CVE-2022-3775
CWE-ID CWE-787
Exploitation vector Local
Public exploit N/A
Vulnerable software
openSUSE Leap Micro
Operating systems & Components / Operating system

SUSE Enterprise Storage
Operating systems & Components / Operating system

SUSE Linux Enterprise Module for SUSE Manager Proxy
Operating systems & Components / Operating system

SUSE Manager Retail Branch Server
Operating systems & Components / Operating system

SUSE Linux Enterprise Micro
Operating systems & Components / Operating system

SUSE Linux Enterprise Desktop
Operating systems & Components / Operating system

openSUSE Leap
Operating systems & Components / Operating system

SUSE Manager Server
Operating systems & Components / Operating system

SUSE Manager Proxy
Operating systems & Components / Operating system

SUSE Linux Enterprise Server for SAP Applications
Operating systems & Components / Operating system

SUSE Linux Enterprise Server
Operating systems & Components / Operating system

SUSE Linux Enterprise High Performance Computing
Operating systems & Components / Operating system

SUSE Linux Enterprise Module for Basesystem
Operating systems & Components / Operating system

SUSE Linux Enterprise Module for Server Applications
Operating systems & Components / Operating system

grub2-s390x-emu-debug
Operating systems & Components / Operating system package or component

grub2-s390x-emu
Operating systems & Components / Operating system package or component

grub2-x86_64-efi-debug
Operating systems & Components / Operating system package or component

grub2-systemd-sleep-plugin
Operating systems & Components / Operating system package or component

grub2-powerpc-ieee1275-debug
Operating systems & Components / Operating system package or component

grub2-powerpc-ieee1275
Operating systems & Components / Operating system package or component

grub2-i386-pc-debug
Operating systems & Components / Operating system package or component

grub2-arm64-efi-debug
Operating systems & Components / Operating system package or component

grub2-branding-upstream
Operating systems & Components / Operating system package or component

grub2-x86_64-xen
Operating systems & Components / Operating system package or component

grub2-x86_64-efi
Operating systems & Components / Operating system package or component

grub2-snapper-plugin
Operating systems & Components / Operating system package or component

grub2-i386-pc
Operating systems & Components / Operating system package or component

grub2-arm64-efi
Operating systems & Components / Operating system package or component

grub2-debugsource
Operating systems & Components / Operating system package or component

grub2-debuginfo
Operating systems & Components / Operating system package or component

grub2
Operating systems & Components / Operating system package or component

Vendor SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU69394

Risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-2601

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows an attacker to bypass implemented security restrictions.

The vulnerability exists due to a boundary error within the grub_font_construct_glyph() function when handling pf2 font. An attacker with physical access to the affected system can trigger an out-of-bounds write and bypass secure boot restrictions.

Mitigation

Update the affected package grub2 to the latest version.

Vulnerable software versions

openSUSE Leap Micro: 5.2

SUSE Enterprise Storage: 7.1

SUSE Linux Enterprise Module for SUSE Manager Proxy: 4.2

SUSE Manager Retail Branch Server: 4.2

SUSE Linux Enterprise Micro: 5.2

SUSE Linux Enterprise Desktop: 15-SP3

openSUSE Leap: 15.3

SUSE Manager Server: 4.2

SUSE Manager Proxy: 4.2

SUSE Linux Enterprise Server for SAP Applications: 15-SP3

SUSE Linux Enterprise Server: 15-SP3

SUSE Linux Enterprise High Performance Computing: 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP3

SUSE Linux Enterprise Module for Server Applications: 15-SP3

grub2-s390x-emu-debug: before 2.04-150300.22.25.1

grub2-s390x-emu: before 2.04-150300.22.25.1

grub2-x86_64-efi-debug: before 2.04-150300.22.25.1

grub2-systemd-sleep-plugin: before 2.04-150300.22.25.1

grub2-powerpc-ieee1275-debug: before 2.04-150300.22.25.1

grub2-powerpc-ieee1275: before 2.04-150300.22.25.1

grub2-i386-pc-debug: before 2.04-150300.22.25.1

grub2-arm64-efi-debug: before 2.04-150300.22.25.1

grub2-branding-upstream: before 2.04-150300.22.25.1

grub2-x86_64-xen: before 2.04-150300.22.25.1

grub2-x86_64-efi: before 2.04-150300.22.25.1

grub2-snapper-plugin: before 2.04-150300.22.25.1

grub2-i386-pc: before 2.04-150300.22.25.1

grub2-arm64-efi: before 2.04-150300.22.25.1

grub2-debugsource: before 2.04-150300.22.25.1

grub2-debuginfo: before 2.04-150300.22.25.1

grub2: before 2.04-150300.22.25.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2022/suse-su-20224219-1/


Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds write

EUVDB-ID: #VU69395

Risk: Low

CVSSv4.0: 0.6 [CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-3775

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows an attacker to crash the system.

The vulnerability exists due to a boundary error when rendering certain unicode sequences in grub2 font code. An attacker with physical access to device can trigger an out-of-bounds write and perform a denial of service (DoS) attack.

Mitigation

Update the affected package grub2 to the latest version.

Vulnerable software versions

openSUSE Leap Micro: 5.2

SUSE Enterprise Storage: 7.1

SUSE Linux Enterprise Module for SUSE Manager Proxy: 4.2

SUSE Manager Retail Branch Server: 4.2

SUSE Linux Enterprise Micro: 5.2

SUSE Linux Enterprise Desktop: 15-SP3

openSUSE Leap: 15.3

SUSE Manager Server: 4.2

SUSE Manager Proxy: 4.2

SUSE Linux Enterprise Server for SAP Applications: 15-SP3

SUSE Linux Enterprise Server: 15-SP3

SUSE Linux Enterprise High Performance Computing: 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP3

SUSE Linux Enterprise Module for Server Applications: 15-SP3

grub2-s390x-emu-debug: before 2.04-150300.22.25.1

grub2-s390x-emu: before 2.04-150300.22.25.1

grub2-x86_64-efi-debug: before 2.04-150300.22.25.1

grub2-systemd-sleep-plugin: before 2.04-150300.22.25.1

grub2-powerpc-ieee1275-debug: before 2.04-150300.22.25.1

grub2-powerpc-ieee1275: before 2.04-150300.22.25.1

grub2-i386-pc-debug: before 2.04-150300.22.25.1

grub2-arm64-efi-debug: before 2.04-150300.22.25.1

grub2-branding-upstream: before 2.04-150300.22.25.1

grub2-x86_64-xen: before 2.04-150300.22.25.1

grub2-x86_64-efi: before 2.04-150300.22.25.1

grub2-snapper-plugin: before 2.04-150300.22.25.1

grub2-i386-pc: before 2.04-150300.22.25.1

grub2-arm64-efi: before 2.04-150300.22.25.1

grub2-debugsource: before 2.04-150300.22.25.1

grub2-debuginfo: before 2.04-150300.22.25.1

grub2: before 2.04-150300.22.25.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2022/suse-su-20224219-1/


Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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