SUSE update for ovmf

1) Out-of-bounds write

EUVDB-ID: #VU75395

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-38578

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

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in MdeModulePkg/Core/PiSmmCore/PiSmmCore.c. A local user trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package ovmf to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Micro for Rancher: 5.3 - 5.4

Server Applications Module: 15-SP4

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap Micro: 5.3

SUSE Manager Retail Branch Server: 4.3

SUSE Manager Server: 4.3

SUSE Manager Proxy: 4.3

openSUSE Leap: 15.4

qemu-ovmf-x86_64-debug: before 202202-150400.5.10.1

qemu-ovmf-ia32: before 202202-150400.5.10.1

qemu-uefi-aarch32: before 202202-150400.5.10.1

ovmf-tools: before 202202-150400.5.10.1

ovmf: before 202202-150400.5.10.1

qemu-uefi-aarch64: before 202202-150400.5.10.1

qemu-ovmf-x86_64: before 202202-150400.5.10.1

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_micro_for_rancher:5.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_micro_for_rancher:5.4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:server_applications_module:15-SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_micro:5.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_micro:5.4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_15:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_15:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_real_time_15:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_15:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:opensuse_leap_micro:5.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_retail_branch_server:4.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_server:4.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_proxy:4.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:opensuse_leap:15.4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:qemu-ovmf-x86_64-debug:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:qemu-ovmf-ia32:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:qemu-uefi-aarch32:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:ovmf-tools:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:ovmf:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:qemu-uefi-aarch64:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:qemu-ovmf-x86_64:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20232234-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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