The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-12407 advisory.

    - ui/clipboard: add asserts for update and request (Fiona Ebner) [Orabug: 36323175] {CVE-2023-6683}
    - ui/clipboard: mark type as not available when there is no data (Fiona Ebner) [Orabug: 36323175]     {CVE-2023-6683}
    - virtio-net: correctly copy vnet header when flushing TX (Jason Wang) [Orabug: 36154459] {CVE-2023-6693}
    - esp: restrict non-DMA transfer length to that of available data (Mark Cave-Ayland) [Orabug: 36322141]     {CVE-2024-24474}
    - net: Update MemReentrancyGuard for NIC (Akihiko Odaki) [Orabug: 35644197] {CVE-2023-3019}
    - net: Provide MemReentrancyGuard * to qemu_new_nic() (Akihiko Odaki) [Orabug: 35644197] {CVE-2023-3019}
    - lsi53c895a: disable reentrancy detection for MMIO region, too (Thomas Huth) [Orabug: 33774027]     {CVE-2021-3750}
    - memory: stricter checks prior to unsetting engaged_in_io (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - async: avoid use-after-free on re-entrancy guard (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - apic: disable reentrancy detection for apic-msi (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - raven: disable reentrancy detection for iomem (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - bcm2835_property: disable reentrancy detection for iomem (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - lsi53c895a: disable reentrancy detection for script RAM (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - hw: replace most qemu_bh_new calls with qemu_bh_new_guarded (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - checkpatch: add qemu_bh_new/aio_bh_new checks (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - async: Add an optional reentrancy guard to the BH API (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - memory: prevent dma-reentracy issues (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - hw/scsi/scsi-disk: Disallow block sizes smaller than 512 [CVE-2023-42467] (Thomas Huth) [Orabug:
    35808564] {CVE-2023-42467}
    - tests/qtest: ahci-test: add test exposing reset issue with pending callback (Fiona Ebner) [Orabug:
    35977245] {CVE-2023-5088}
    - hw/ide: reset: cancel async DMA operation before resetting state (Fiona Ebner) [Orabug: 35977245]     {CVE-2023-5088}

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 Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-12276 advisory.

  - A stack based buffer overflow was found in the virtio-net device of QEMU. This issue occurs when flushing     TX in the virtio_net_flush_tx function if guest features VIRTIO_NET_F_HASH_REPORT, VIRTIO_F_VERSION_1 and     VIRTIO_NET_F_MRG_RXBUF are enabled. This could allow a malicious user to overwrite local variables     allocated on the stack. Specifically, the `out_sg` variable could be used to read a part of process memory     and send it to the wire, causing an information leak. (CVE-2023-6693)

  - An off-by-one error flaw was found in the udevListInterfacesByStatus() function in libvirt when the number     of interfaces exceeds the size of the `names` array. This issue can be reproduced by sending specially     crafted data to the libvirt daemon, allowing an unprivileged client to perform a denial of service attack     by causing the libvirt daemon to crash. (CVE-2024-1441)

  - A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The     qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the     chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a     malicious authenticated VNC client to crash QEMU and trigger a denial of service. (CVE-2023-6683)

  - QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset in hw/scsi/scsi-disk.c because     scsi_disk_emulate_mode_select does not prevent s->qdev.blocksize from being 256. This stops QEMU and the     guest immediately. (CVE-2023-42467)

  - A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be     targeted to offset 0 instead (potentially overwriting the VM's boot code). This could be used, for     example, by L2 guests with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor     to read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot.
    (CVE-2023-5088)

  - A DMA reentrancy issue was found in the USB EHCI controller emulation of QEMU. EHCI does not verify if the     Buffer Pointer overlaps with its MMIO region when it transfers the USB packets. Crafted content may be     written to the controller's registers and trigger undesirable actions (such as reset) while the device is     still transferring packets. This can ultimately lead to a use-after-free issue. A malicious guest could     use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or     potentially execute arbitrary code within the context of the QEMU process on the host. This flaw affects     QEMU versions before 7.0.0. (CVE-2021-3750)

  - A DMA reentrancy issue leading to a use-after-free error was found in the e1000e NIC emulation code in     QEMU. This issue could allow a privileged guest user to crash the QEMU process on the host, resulting in a     denial of service. (CVE-2023-3019)

  - QEMU before 8.2.0 has an integer underflow, and resultant buffer overflow, via a TI command when an     expected non-DMA transfer length is less than the length of the available FIFO data. This occurs in     esp_do_nodma in hw/scsi/esp.c because of an underflow of async_len. (CVE-2024-24474)

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

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:1394-1 advisory.

  - A DMA reentrancy issue leading to a use-after-free error was found in the e1000e NIC emulation code in     QEMU. This issue could allow a privileged guest user to crash the QEMU process on the host, resulting in a     denial of service. (CVE-2023-3019)

  - A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The     qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the     chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a     malicious authenticated VNC client to crash QEMU and trigger a denial of service. (CVE-2023-6683)

  - QEMU before 8.2.0 has an integer underflow, and resultant buffer overflow, via a TI command when an     expected non-DMA transfer length is less than the length of the available FIFO data. This occurs in     esp_do_nodma in hw/scsi/esp.c because of an underflow of async_len. (CVE-2024-24474)

  - A double free vulnerability was found in QEMU virtio devices (virtio-gpu, virtio-serial-bus, virtio-     crypto), where the mem_reentrancy_guard flag insufficiently protects against DMA reentrancy issues. This     issue could allow a malicious privileged guest user to crash the QEMU process on the host, resulting in a     denial of service or allow arbitrary code execution within the context of the QEMU process on the host.
    (CVE-2024-3446)

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

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:1103-1 advisory.

  - A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. This flaw allows a     crafted guest driver to allocate and initialize a huge number of page tables to be used as a ring of     descriptors for CQ and async events, potentially leading to an out-of-bounds read and crash of QEMU.
    (CVE-2023-1544)

  - A stack based buffer overflow was found in the virtio-net device of QEMU. This issue occurs when flushing     TX in the virtio_net_flush_tx function if guest features VIRTIO_NET_F_HASH_REPORT, VIRTIO_F_VERSION_1 and     VIRTIO_NET_F_MRG_RXBUF are enabled. This could allow a malicious user to overwrite local variables     allocated on the stack. Specifically, the `out_sg` variable could be used to read a part of process memory     and send it to the wire, causing an information leak. (CVE-2023-6693)

  - QEMU before 8.2.0 has an integer underflow, and resultant buffer overflow, via a TI command when an     expected non-DMA transfer length is less than the length of the available FIFO data. This occurs in     esp_do_nodma in hw/scsi/esp.c because of an underflow of async_len. (CVE-2024-24474)

  - An issue was discovered in QEMU 7.1.0 through 8.2.1. register_vfs in hw/pci/pcie_sriov.c mishandles the     situation where a guest writes NumVFs greater than TotalVFs, leading to a buffer overflow in VF     implementations. (CVE-2024-26327)

  - An issue was discovered in QEMU 7.1.0 through 8.2.1. register_vfs in hw/pci/pcie_sriov.c does not set     NumVFs to PCI_SRIOV_TOTAL_VF, and thus interaction with hw/nvme/ctrl.c is mishandled. (CVE-2024-26328)

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

The version of QEMU installed on the remote Windows host is prior to 9.0.0 and therefore vulnerable to the following:

  - A double free vulnerability was found in QEMU virtio devices (virtio-gpu, virtio-serial-bus, virtio-crypto), where     the mem_reentrancy_guard flag insufficiently protects against DMA reentrancy issues. This issue could allow a     malicious privileged guest user to crash the QEMU process on the host, resulting in a denial of service or allow     arbitrary code execution within the context of the QEMU process on the host. (CVE-2024-3446)

  - A stack based buffer overflow was found in the virtio-net device of QEMU. This issue occurs when flushing TX in     the virtio_net_flush_tx function if guest features VIRTIO_NET_F_HASH_REPORT, VIRTIO_F_VERSION_1 and     VIRTIO_NET_F_MRG_RXBUF are enabled. This could allow a malicious user to overwrite local variables allocated on the     stack. Specifically, the `out_sg` variable could be used to read a part of process memory and send it to the wire,     causing an information leak. (CVE-2023-6693)

  - A flaw was found in QEMU. An assertion failure was present in the update_sctp_checksum() function in     hw/net/net_tx_pkt.c when trying to calculate the checksum of a short-sized fragmented packet. This flaw allows a     malicious guest to crash QEMU and cause a denial of service condition. (CVE-2024-3567)

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	Published	Updated	Severity
200094	Oracle Linux 9 : qemu-kvm (ELSA-2024-12407)	Nessus	Oracle Linux Local Security Checks	6/4/2024	7/12/2024	high
193168	Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12276)	Nessus	Oracle Linux Local Security Checks	4/10/2024	4/10/2024	high
193796	SUSE SLES15 Security Update : qemu (SUSE-SU-2024:1394-1)	Nessus	SuSE Local Security Checks	4/24/2024	7/12/2024	medium
193075	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : qemu (SUSE-SU-2024:1103-1)	Nessus	SuSE Local Security Checks	4/9/2024	7/12/2024	medium
200136	QEMU < 9.0.0 Multiple Vulnerabilities	Nessus	Windows	6/6/2024	7/12/2024	medium

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