Incomplete system memory cleanup in SEV firmware could allow a privileged attacker to corrupt guest private memory, potentially resulting in a loss of data integrity.

The remote Ubuntu 24.04 LTS / 24.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7561-1 advisory.

    It was discovered that AMD Microcode incorrectly handled memory addresses. An attacker with local     administrator privilege could possibly use this issue to cause loss of integrity of a confidential guest     running under AMD SEV-SNP. (CVE-2023-20584, CVE-2023-31356)

    Josh Eads, Kristoffer Janke, Eduardo Nava, Tavis Ormandy and Matteo Rizzo discovered that AMD Microcode     incorrectly verified signatures. An attacker with local administrator privilege could possibly use this     issue to cause loss of confidentiality and integrity of a confidential guest running under AMD SEV-SNP.
    (CVE-2024-56161)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2024:0223 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2023-20584:
    IOMMU improperly handles certain special address     ranges with invalid device table entries (DTEs), which may allow an attacker     with privileges and a compromised Hypervisor to     induce DTE faults to bypass RMP checks in SEV-SNP, potentially leading to a     loss of guest integrity.

    CVE-2023-31315:
    Improper validation in a model specific register (MSR) could allow a malicious program with ring0 access     to modify SMM configuration while SMI lock is enabled, potentially leading to arbitrary code execution.

    CVE-2023-31356:
    Incomplete system memory cleanup in SEV firmware could     allow a privileged attacker to corrupt guest private memory, potentially     resulting in a loss of data integrity.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2024:7481 advisory.

    * kernel: hw:amd:IOMMU improperly handles certain special address leading to a loss of guest integrity     (CVE-2023-20584)

    * kernel: hw: amd:Incomplete system memory cleanup in SEV firmware corrupt guest private memory     (CVE-2023-31356)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 / 8 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-12797 advisory.

    [20241003-999.35.git95bfe086.el8]
    - Rebase to latest upstream [Orabug: 37132142]
    - Fix build error in ol7 due to linking in copy-firmware.sh [Orabug: 37132515]
    - Bring back drirectory structure qcom/sc8280xp [Orabug: 37132142]

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2024:7481 advisory.

    * kernel: hw:amd:IOMMU improperly handles certain special address leading to a loss of guest integrity     (CVE-2023-20584)
    * kernel: hw: amd:Incomplete system memory cleanup in SEV firmware corrupt guest private memory     (CVE-2023-31356)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2024:7484 advisory.

    * kernel: hw:amd:IOMMU improperly handles certain special address leading to a loss of guest integrity     (CVE-2023-20584)
    * kernel: hw: amd:Incomplete system memory cleanup in SEV firmware corrupt guest private memory     (CVE-2023-31356)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:7484 advisory.

    The linux-firmware packages contain all of the firmware files that are required by various devices to     operate.

    Security Fix(es):

    * kernel: hw:amd:IOMMU improperly handles certain special address leading to a loss of guest integrity     (CVE-2023-20584)

    * kernel: hw: amd:Incomplete system memory cleanup in SEV firmware corrupt guest private memory     (CVE-2023-31356)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2024:7482 advisory.

    The linux-firmware packages contain all of the firmware files that are required by various devices to     operate.

    Security Fix(es):

    * kernel: hw: amd:Incomplete system memory cleanup in SEV firmware corrupt guest private memory     (CVE-2023-31356)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:7483 advisory.

    The linux-firmware packages contain all of the firmware files that are required by various devices to     operate.

    Security Fix(es):

    * kernel: hw:amd:IOMMU improperly handles certain special address leading to a loss of guest integrity     (CVE-2023-20584)

    * kernel: hw: amd:Incomplete system memory cleanup in SEV firmware corrupt guest private memory     (CVE-2023-31356)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:7481 advisory.

    The linux-firmware packages contain all of the firmware files that are required by various devices to     operate.

    Security Fix(es):

    * kernel: hw:amd:IOMMU improperly handles certain special address leading to a loss of guest integrity     (CVE-2023-20584)

    * kernel: hw: amd:Incomplete system memory cleanup in SEV firmware corrupt guest private memory     (CVE-2023-31356)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:7418 advisory.

    The linux-firmware packages contain all of the firmware files that are required by various devices to     operate.

    Security Fix(es):

    * kernel: hw:amd:IOMMU improperly handles certain special address leading to a loss of guest integrity     (CVE-2023-20584)

    * kernel: hw: amd:Incomplete system memory cleanup in SEV firmware corrupt guest private memory     (CVE-2023-31356)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
238066	Ubuntu 24.04 LTS / 24.10 : AMD Microcode vulnerabilities (USN-7561-1)	Nessus	Ubuntu Local Security Checks	medium
235967	Alibaba Cloud Linux 3 : 0223: linux-firmware (ALINUX3-SA-2024:0223)	Nessus	Alibaba Cloud Linux Local Security Checks	medium
235531	RockyLinux 8 : linux-firmware (RLSA-2024:7481)	Nessus	Rocky Linux Local Security Checks	medium
209539	Oracle Linux 7 / 8 / 9 : linux-firmware (ELSA-2024-12797)	Nessus	Oracle Linux Local Security Checks	medium
208200	AlmaLinux 8 : linux-firmware (ALSA-2024:7481)	Nessus	Alma Linux Local Security Checks	medium
208198	AlmaLinux 9 : linux-firmware (ALSA-2024:7484)	Nessus	Alma Linux Local Security Checks	medium
208016	RHEL 9 : linux-firmware (RHSA-2024:7484)	Nessus	Red Hat Local Security Checks	medium
208014	RHEL 8 : linux-firmware (RHSA-2024:7482)	Nessus	Red Hat Local Security Checks	medium
208012	RHEL 9 : linux-firmware (RHSA-2024:7483)	Nessus	Red Hat Local Security Checks	medium
208011	RHEL 8 : linux-firmware (RHSA-2024:7481)	Nessus	Red Hat Local Security Checks	medium
207966	RHEL 8 : linux-firmware (RHSA-2024:7418)	Nessus	Red Hat Local Security Checks	medium

Detections

Analytics

CVE-2023-31356

medium

Tenable Plugins

medium

medium

medium

medium

medium

medium

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medium