SUSE: 2024:2376-1 important: kernel-firmware Security Advisory Updates
Summary
## This update for kernel-firmware fixes the following issues: Update AMD ucode to 20231030 (bsc#1215831): * CVE-2022-23820: Failure to validate the AMD SMM communication buffer may allow an attacker to corrupt the SMRAM potentially leading to arbitrary code execution. * CVE-2021-46774: Insufficient input validation in ABL may enable a privileged attacker to perform arbitrary DRAM writes, potentially resulting in code execution and privilege escalation. * CVE-2023-20533: Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker using DMA to read/write from/to invalid DRAM address potentially resulting in denial-of-service. 0 CVE-2023-20519: A Use-After-Free vulnerability in the management of an SNP guest context page may allow a malicious hypervisor to masquerade as the guest's migration agent resulting in a potential loss of guest integrity. * CVE-2023-20566: Improper address validation in ASP with SNP enabled may potentially allow an attacker to compromise guest memory integrity. * CVE-2023-20521: TOCTOU in the ASP Bootloader may allow an attacker with physical access to tamper with SPI ROM records after memory content verification, potentially leading to loss of confidentiality or a denial of service. * CVE-2021-46766: Improper clearing of sensitive data in the ASP Bootloader may expose secret keys to a privileged attacker accessing ASP SRAM, potentially leading to a loss of confidentiality. * CVE-2022-23830: SMM configuration may not be immutable, as intended, when SNP is enabled resulting in a potential limited loss of guest memory integrity. * CVE-2023-20526: Insufficient input validation in the ASP Bootloader may enable a privileged attacker with physical access to expose the contents of ASP memory potentially leading to a loss of confidentiality. * CVE-2021-26345: Failure to validate the value in APCB may allow an attacker with physical access to tamper with the APCB token to force an out-of-bounds memory read potentially resulting in a denial of service. * CVE-2023-20592: Issue with INVD instruction aka CacheWarpAttack (bsc#1215823).
References
* bsc#1215823
* bsc#1215831
Cross-
* CVE-2021-26345
* CVE-2021-46766
* CVE-2021-46774
* CVE-2022-23820
* CVE-2022-23830
* CVE-2023-20519
* CVE-2023-20521
* CVE-2023-20526
* CVE-2023-20533
* CVE-2023-20566
* CVE-2023-20592
CVSS scores:
* CVE-2021-26345 ( SUSE ): 1.6 CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
* CVE-2021-26345 ( NVD ): 4.9 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
* CVE-2021-46766 ( SUSE ): 2.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N
* CVE-2021-46766 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
* CVE-2021-46774 ( SUSE ): 6.7 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:L
* CVE-2021-46774 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2022-23820 ( SUSE ): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
* CVE-2022-23820 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
* CVE-2022-23830 ( SUSE ): 1.9 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N
* CVE-2022-23830 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
* CVE-2023-20519 ( SUSE ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
* CVE-2023-20519 ( NVD ): 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
* CVE-2023-20521 ( SUSE ): 3.3 CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L
* CVE-2023-20521 ( NVD ): 5.7 CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
* CVE-2023-20526 ( SUSE ): 1.9 CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N
* CVE-2023-20526 ( NVD ): 4.6 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2023-20533 ( SUSE ): 6.1 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:H
* CVE-2023-20533 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2023-20566 ( SUSE ): 5.3 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N
* CVE-2023-20566 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
* CVE-2023-20592 ( SUSE ): 5.3 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N
* CVE-2023-20592 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Affected Products:
* SUSE Linux Enterprise Micro 5.5
An update that solves 11 vulnerabilities can now be installed.
##
* https://www.suse.com/security/cve/CVE-2021-26345.html
* https://www.suse.com/security/cve/CVE-2021-46766.html
* https://www.suse.com/security/cve/CVE-2021-46774.html
* https://www.suse.com/security/cve/CVE-2022-23820.html
* https://www.suse.com/security/cve/CVE-2022-23830.html
* https://www.suse.com/security/cve/CVE-2023-20519.html
* https://www.suse.com/security/cve/CVE-2023-20521.html
* https://www.suse.com/security/cve/CVE-2023-20526.html
* https://www.suse.com/security/cve/CVE-2023-20533.html
* https://www.suse.com/security/cve/CVE-2023-20566.html
* https://www.suse.com/security/cve/CVE-2023-20592.html
* https://bugzilla.suse.com/show_bug.cgi?id=1215823
* https://bugzilla.suse.com/show_bug.cgi?id=1215831
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