An issue was discovered in TCG Accelerator in QEMU 4.2.0, allows local attackers to execute arbitrary code, escalate privileges, and cause a denial of service (DoS). Note: This is disputed as a bug and not a valid security issue by multiple third parties.

According to the versions of the qemu package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - An issue was discovered in TCG Accelerator in QEMU 4.2.0, allows local attackers to execute arbitrary     code, escalate privileges, and cause a denial of service (DoS). (CVE-2020-24165)

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

The remote Ubuntu 20.04 LTS / 22.04 LTS / 23.04 / 23.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6567-1 advisory.

    Gaoning Pan and Xingwei Li discovered that QEMU incorrectly handled the USB xHCI controller device. A     privileged guest attacker could possibly use this issue to cause QEMU to crash, leading to a denial of     service. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2020-14394)

    It was discovered that QEMU incorrectly handled the TCG Accelerator. A local attacker could use this issue     to cause QEMU to crash, leading to a denial of service, or possibly execute arbitrary code and esclate     privileges. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-24165)

    It was discovered that QEMU incorrectly handled the Intel HD audio device. A malicious guest attacker     could use this issue to cause QEMU to crash, leading to a denial of service. This issue only affected     Ubuntu 22.04 LTS. (CVE-2021-3611)

    It was discovered that QEMU incorrectly handled the ATI VGA device. A malicious guest attacker could use     this issue to cause QEMU to crash, leading to a denial of service. This issue only affected Ubuntu 20.04     LTS. (CVE-2021-3638)

    It was discovered that QEMU incorrectly handled the VMWare paravirtual RDMA device. A malicious guest     attacker could use this issue to cause QEMU to crash, leading to a denial of service. (CVE-2023-1544)

    It was discovered that QEMU incorrectly handled the 9p passthrough filesystem. A malicious guest attacker     could possibly use this issue to open special files and escape the exported 9p tree. This issue only     affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 23.04. (CVE-2023-2861)

    It was discovered that QEMU incorrectly handled the virtual crypto device. A malicious guest attacker     could use this issue to cause QEMU to crash, leading to a denial of service, or possibly execute arbitrary     code. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 23.04. (CVE-2023-3180)

    It was discovered that QEMU incorrectly handled the built-in VNC server. A remote authenticated attacker     could possibly use this issue to cause QEMU to stop responding, resulting in a denial of service. This     issue only affected Ubuntu 22.04 LTS and Ubuntu 23.04. (CVE-2023-3255)

    It was discovered that QEMU incorrectly handled net device hot-unplugging. A malicious guest attacker     could use this issue to cause QEMU to crash, leading to a denial of service. This issue only affected     Ubuntu 22.04 LTS and Ubuntu 23.04. (CVE-2023-3301)

    It was discovered that QEMU incorrectly handled the built-in VNC server. A remote attacker could possibly     use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu     20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 23.04. (CVE-2023-3354)

    It was discovered that QEMU incorrectly handled NVME devices. A malicious guest attacker could use this     issue to cause QEMU to crash, leading to a denial of service. This issue only affected Ubuntu 23.10.
    (CVE-2023-40360)

    It was discovered that QEMU incorrectly handled NVME devices. A malicious guest attacker could use this     issue to cause QEMU to crash, leading to a denial of service, or possibly obtain sensitive information.
    This issue only affected Ubuntu 23.10. (CVE-2023-4135)

    It was discovered that QEMU incorrectly handled SCSI devices. A malicious guest attacker could use this     issue to cause QEMU to crash, leading to a denial of service. This issue only affected Ubuntu 23.04 and     Ubuntu 23.10. (CVE-2023-42467)

    It was discovered that QEMU incorrectly handled certain disk offsets. A malicious guest attacker could     possibly use this issue to gain control of the host in certain nested virtualization scenarios.
    (CVE-2023-5088)

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 Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3604 advisory.

  - An issue was discovered in TCG Accelerator in QEMU 4.2.0, allows local attackers to execute arbitrary     code, escalate privileges, and cause a denial of service (DoS). (CVE-2020-24165)

  - A vulnerability in the lsi53c895a device affects the latest version of qemu. A DMA-MMIO reentrancy problem     may lead to memory corruption bugs like stack overflow or use-after-free. (CVE-2023-0330)

  - A flaw was found in the QEMU virtual crypto device while handling data encryption/decryption requests in     virtio_crypto_handle_sym_req. There is no check for the value of `src_len` and `dst_len` in     virtio_crypto_sym_op_helper, potentially leading to a heap buffer overflow when the two values differ.
    (CVE-2023-3180)

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
188431	EulerOS Virtualization 2.10.1 : qemu (EulerOS-SA-2023-3515)	Nessus	Huawei Local Security Checks	high
188102	EulerOS Virtualization 2.10.0 : qemu (EulerOS-SA-2023-3487)	Nessus	Huawei Local Security Checks	high
187683	Ubuntu 20.04 LTS / 22.04 LTS / 23.04 / 23.10 : QEMU vulnerabilities (USN-6567-1)	Nessus	Ubuntu Local Security Checks	high
182648	Debian DLA-3604-1 : qemu - LTS security update	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2020-24165

high

Tenable Plugins

high

high

high

high