A heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code with privileges of the QEMU process on the host.

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8412-1 advisory.

    Felipe Franciosi, Raphael Norwitz, and Peter Turschmid discovered that the iSCSI block driver in QEMU     incorrectly handled certain responses from an iSCSI server. A remote attacker could possibly use this     issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This     issue only affected Ubuntu 14.04 LTS. (CVE-2020-1711)

    It was discovered that the iSCSI block driver in QEMU incorrectly handled certain memory operations,     leading to a heap-based buffer over-read. An attacker could possibly use this issue to expose sensitive     information from the host. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-11947)

    Ziming Zhang discovered that the SM501 display driver in QEMU contained an integer overflow. A local     attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This     issue only affected Ubuntu 14.04 LTS. (CVE-2020-12829)

    Gaoning Pan and Xingwei Li discovered that the USB xHCI controller implementation in QEMU contained an     infinite loop. An attacker inside the guest could possibly use this issue to cause QEMU to hang, resulting     in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS.
    (CVE-2020-14394)

    Lei Sun discovered that QEMU incorrectly handled certain MemoryRegionOps objects, leading to a NULL     pointer dereference. An attacker inside the guest could possibly use this issue to cause QEMU to crash,     resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
    (CVE-2020-15469)

    Alexander Bulekov discovered that the e1000e network device implementation in QEMU contained a use-after-     free. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a     denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-15859)

    Ziming Zhang discovered that the XGMAC Ethernet controller in QEMU contained a buffer overflow. An     attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of     service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-15863)

    Alexander Bulekov discovered that the SDHCI device emulation in QEMU contained a heap-based buffer     overflow. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in     a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS.
    (CVE-2020-17380)

    Sergej Schumilo, Cornelius Aschermann, and Simon Wrner discovered that the USB xHCI controller     implementation in QEMU did not check a return value, leading to a use-after-free. An attacker inside the     guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue     only affected Ubuntu 14.04 LTS. (CVE-2020-25084)

    Gaoning Pan, Yongkang Jia, and Yi Ren discovered that the USB OHCI controller implementation in QEMU     contained a stack-based buffer over-read. An attacker inside the guest could possibly use this issue to     cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS.
    (CVE-2020-25624)

    It was discovered that the USB OHCI controller implementation in QEMU contained an infinite loop. An     attacker inside the guest could possibly use this issue to cause QEMU to consume resources, resulting in a     denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-25625)

    Cheolwoo Myung discovered that the USB EHCI emulation in QEMU did not handle DMA memory map failures,     leading to a reachable assertion. An attacker inside the guest could possibly use this issue to cause QEMU     to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-25723)

    Gaoning Pan discovered that the network device emulation in QEMU could be made to trigger an assertion     failure when processing packets that lacked a valid layer 3 protocol. An attacker inside the guest could     possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected     Ubuntu 14.04 LTS. (CVE-2020-27617)

    Wenxiang Qian discovered that the ATAPI emulation in QEMU did not properly validate a buffer index,     leading to an out-of-bounds read. An attacker inside the guest could possibly use this issue to expose     sensitive information or cause QEMU to crash, resulting in a denial of service. This issue only affected     Ubuntu 14.04 LTS. (CVE-2020-29443)

    Cheolwoo Myung discovered that the ESP SCSI emulation in QEMU contained a NULL pointer dereference. An     attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of     service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2020-35504)

    Cheolwoo Myung discovered that the am53c974 SCSI host bus adapter emulation in QEMU contained a NULL     pointer dereference. An attacker inside the guest could possibly use this issue to cause QEMU to crash,     resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
    (CVE-2020-35505)

    It was discovered that the SDHCI controller emulation in QEMU contained out-of-bounds read and write     issues. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a     denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and     Ubuntu 16.04 LTS. (CVE-2021-3409)

    It was discovered that several network device emulations in QEMU contained an infinite loop when operating     in loopback mode. An attacker inside the guest could possibly use this issue to cause QEMU to crash,     resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
    (CVE-2021-3416)

    Alexander Bulekov discovered that the floppy disk emulation in QEMU contained a heap-based buffer     overflow. An attacker inside the guest could possibly use this issue to expose sensitive information or     cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and     Ubuntu 16.04 LTS. (CVE-2021-3507)

    Remy Noel discovered that the USB redirector device emulation in QEMU performed an unbounded stack     allocation when combining USB packets. An attacker inside the guest could possibly use this issue to cause     QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu     16.04 LTS. (CVE-2021-3527)

    It was discovered that the QXL display device emulation in QEMU contained an integer overflow, leading to     a heap-based buffer overflow. An attacker inside the guest could possibly use this issue to cause QEMU to     crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected     Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-4206)

    It was discovered that the QXL display device emulation in QEMU performed a double fetch of guest-     controlled values, leading to a heap-based buffer overflow. An attacker inside the guest could possibly     use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary     code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-4207)

    It was discovered that the 9pfs server implementation in QEMU contained a race condition, leading to a     use-after-free. A malicious 9p client could possibly use this issue to escalate privileges. This issue     only affected Ubuntu 14.04 LTS. (CVE-2021-20181)

    Gaoning Pan discovered that the floppy disk emulation in QEMU contained a NULL pointer dereference. An     attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of     service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-20196)

    Gaoning Pan discovered that the vmxnet3 network device emulation in QEMU contained an integer overflow. An     attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of     service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-20203)

    It was discovered that the ARM Generic Interrupt Controller emulation in QEMU contained an out-of-bounds     heap access. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting     in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-20221)

    Alexander Bulekov, Cheolwoo Myung, Sergej Schumilo, Cornelius Aschermann, and Simon Wrner discovered     that the e1000 network device emulation in QEMU contained an infinite loop. An attacker inside the guest     could possibly use this issue to cause QEMU to consume resources, resulting in a denial of service. This     issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-20257)

    It was discovered that the 9p passthrough file system implementation in QEMU did not prevent opening     special files on the host. A malicious guest could possibly use this issue to escape the exported 9p tree.
    This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS. (CVE-2023-2861)

    It was discovered that the virtio crypto device emulation in QEMU did not properly validate certain buffer     lengths, leading to a heap buffer overflow. An attacker inside the guest could possibly use this issue to     cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only     affected Ubuntu 18.04 LTS. (CVE-2023-3180)

    It was discovered that the built-in VNC server in QEMU contained a NULL pointer dereference when cleaning     up a connection that failed during the handshake. A remote attacker could possibly use this issue to cause     QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS.
    (CVE-2023-3354)

    It was discovered that QEMU could incorrectly direct a guest I/O operation to disk offset 0 instead of the     intended offset. An attacker inside the guest could possibly use this issue to read or overwrite sensitive     data, potentially gaining control of the host. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04     LTS, and Ubuntu 18.04 LTS. (CVE-2023-5088)

    It was discovered that several virtio device emulations in QEMU did not properly guard against DMA     reentrancy, leading to a double free. An attacker inside the guest could possibly use this issue to cause     QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2024-3446)

    It was discovered that the SDHCI device emulation in QEMU contained a heap- based buffer overflow. An     attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of     service. (CVE-2024-3447)

    It was discovered that the QEMU disk image utility (qemu-img) did not properly handle certain crafted     image files. An attacker could possibly use this issue to cause qemu-img to consume excessive resources or     access an unintended external file, resulting in a denial of service. This issue only affected Ubuntu     20.04 LTS. (CVE-2024-4467)

    Cyrille Chatras discovered that the LSI53C895A SCSI Host Bus Adapter emulation in QEMU contained a use-     after-free. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting     in a denial of service, or possibly execute arbitrary code. (CVE-2024-6519)

    It was discovered that the NBD server in QEMU contained an improper synchronization issue during socket     closure. A remote attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of     service. (CVE-2024-7409)

    It was discovered that the USB emulation in QEMU contained a reachable assertion. An attacker inside the     guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service.
    (CVE-2024-8354)

    It was discovered that QEMU incorrectly handled resources during the VNC WebSocket handshake, leading to a     use-after-free. A remote attacker could possibly use this issue to cause QEMU to crash, resulting in a     denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2025-11234)

    It was discovered that QEMU could be made to read out of bounds when reading VMDK images. An attacker     could possibly use this issue to expose sensitive information or cause QEMU to crash, resulting in a     denial of service. (CVE-2026-2243)

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.

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - A heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It
    could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in
    hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host,
    resulting in a denial of service condition, or potentially execute arbitrary code with privileges of the
    QEMU process on the host. (CVE-2020-17380)

  - In QEMU 5.0.0 and earlier, es1370_transfer_audio in hw/audio/es1370.c does not properly validate the frame
    count, which allows guest OS users to trigger an out-of-bounds access during an es1370_write() operation.
    (CVE-2020-13361)

  - In QEMU 5.0.0 and earlier, megasas_lookup_frame in hw/scsi/megasas.c has an out-of-bounds read via a
    crafted reply_queue_head field from a guest OS user. (CVE-2020-13362)

  - An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before
    5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its
    'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the
    QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the
    privileges of the QEMU process on the host. (CVE-2020-14364)

  - hw/net/xgmac.c in the XGMAC Ethernet controller in QEMU before 07-20-2020 has a buffer overflow. This
    occurs during packet transmission and affects the highbank and midway emulated machines. A guest user or
    process could use this flaw to crash the QEMU process on the host, resulting in a denial of service or
    potential privileged code execution. This was fixed in commit 5519724a13664b43e225ca05351c60b4468e4555.
    (CVE-2020-15863)

The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:0761-1 advisory.

    - bsc#1172033 (CVE-2020-13253)

    - bsc#1180207 (CVE-2020-14394)

    - bsc#1172382 (CVE-2020-13754)

    - bsc#1198038 (CVE-2022-0216)

    - bsc#1193880 (CVE-2021-3929)

    - bsc#1197653 (CVE-2022-1050)

    - bsc#1205808 (CVE-2022-4144), bsc#1198712 (CVE-2022-26354)

    - bsc#1175144 (CVE-2020-17380, CVE-2020-25085, CVE-2021-3409),       bsc#1185000 (CVE-2021-3507), bsc#1201367, CVE-2022-35414
    - About bsc#1175144, see also bsc#1182282 (CVE-2021-3409)

    - bsc#1198035, CVE-2021-4206

Tenable has extracted the preceding description block directly from the SUSE 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-3362 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3362-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                      Sylvain Beucler     March 14, 2023                                https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : qemu     Version        : 1:3.1+dfsg-8+deb10u10     CVE ID         : CVE-2020-14394 CVE-2020-29130 CVE-2021-3592 CVE-2021-3593                      CVE-2021-3594 CVE-2021-3595 CVE-2022-0216 CVE-2022-1050     Debian Bug     : 970937 979677 986795 989993 989994 989995 989996 1014589 1014590

    Multiple security issues were discovered in QEMU, a fast processor     emulator, which could result in denial of service, information leak,     or potentially the execution of arbitrary code.

    CVE-2020-14394

        An infinite loop flaw was found in the USB xHCI controller         emulation of QEMU while computing the length of the Transfer         Request Block (TRB) Ring. This flaw allows a privileged guest user         to hang the QEMU process on the host, resulting in a denial of         service.

    CVE-2020-17380/CVE-2021-3409

        A heap-based buffer overflow was found in QEMU in the SDHCI device         emulation support. It could occur while doing a multi block SDMA         transfer via the sdhci_sdma_transfer_multi_blocks() routine in         hw/sd/sdhci.c. A guest user or process could use this flaw to         crash the QEMU process on the host, resulting in a denial of         service condition, or potentially execute arbitrary code with         privileges of the QEMU process on the host.

    CVE-2020-29130

        slirp.c has a buffer over-read because it tries to read a certain         amount of header data even if that exceeds the total packet         length.

    CVE-2021-3592

        An invalid pointer initialization issue was found in the SLiRP         networking implementation of QEMU. The flaw exists in the         bootp_input() function and could occur while processing a udp         packet that is smaller than the size of the 'bootp_t' structure. A         malicious guest could use this flaw to leak 10 bytes of         uninitialized heap memory from the host.

    CVE-2021-3593

        An invalid pointer initialization issue was found in the SLiRP         networking implementation of QEMU. The flaw exists in the         udp6_input() function and could occur while processing a udp         packet that is smaller than the size of the 'udphdr'         structure. This issue may lead to out-of-bounds read access or         indirect host memory disclosure to the guest.

    CVE-2021-3594

        An invalid pointer initialization issue was found         in the SLiRP networking implementation of QEMU. The flaw exists in         the udp_input() function and could occur while processing a udp         packet that is smaller than the size of the 'udphdr'         structure. This issue may lead to out-of-bounds read access or         indirect host memory disclosure to the guest.

    CVE-2021-3595

        An invalid pointer initialization issue was found in the SLiRP         networking implementation of QEMU. The flaw exists in the         tftp_input() function and could occur while processing a udp         packet that is smaller than the size of the 'tftp_t'         structure. This issue may lead to out-of-bounds read access or         indirect host memory disclosure to the guest.

    CVE-2022-0216

        A use-after-free vulnerability was found in the LSI53C895A SCSI         Host Bus Adapter emulation of QEMU. The flaw occurs while         processing repeated messages to cancel the current SCSI request         via the lsi_do_msgout function. This flaw allows a malicious         privileged user within the guest to crash the QEMU process on the         host, resulting in a denial of service.

    CVE-2022-1050

        A flaw was found in the QEMU implementation of VMWare's         paravirtual RDMA device. This flaw allows a crafted guest driver         to execute HW commands when shared buffers are not yet allocated,         potentially leading to a use-after-free condition.
        Note: PVRDMA is disabled in buster, but this was fixed         preventively in case this changes in the future.

    For Debian 10 buster, these problems have been fixed in version     1:3.1+dfsg-8+deb10u10.

    We recommend that you upgrade your qemu packages.

    For the detailed security status of qemu please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/qemu

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian 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 SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:3768-1 advisory.

    - CVE-2021-3409: Fixed an incomplete fix for CVE-2020-17380 and CVE-2020-25085 in sdhi controller.
    (bsc#1182282)
    - CVE-2021-4206: Fixed an integer overflow in cursor_alloc which can lead to heap buffer overflow.
    (bsc#1198035)
    - CVE-2021-4207: Fixed a double fetch in qxl_cursor ehich can lead to heap buffer overflow. (bsc#1198037)
    - CVE-2022-0216: Fixed a use after free issue found in hw/scsi/lsi53c895a.c. (bsc#1198038)
    - CVE-2022-35414: Fixed an uninitialized read during address translation that leads to a crash.
    (bsc#1201367)
    - CVE-2021-3507: Fixed a heap buffer overflow in DMA read data transfers. (bsc#1185000)
    - CVE-2020-17380: Fixed a heap buffer overflow in sdhci_sdma_transfer_multi_blocks. (bsc#1175144)

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

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

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

  - sd_wp_addr in hw/sd/sd.c in QEMU 4.2.0 uses an unvalidated address, which leads to an out-of-bounds read     during sdhci_write() operations. A guest OS user can crash the QEMU process. (CVE-2020-13253)

  - In QEMU 5.0.0 and earlier, es1370_transfer_audio in hw/audio/es1370.c does not properly validate the frame     count, which allows guest OS users to trigger an out-of-bounds access during an es1370_write() operation.
    (CVE-2020-13361)

  - In QEMU 5.0.0 and earlier, megasas_lookup_frame in hw/scsi/megasas.c has an out-of-bounds read via a     crafted reply_queue_head field from a guest OS user. (CVE-2020-13362)

  - address_space_map in exec.c in QEMU 4.2.0 can trigger a NULL pointer dereference related to BounceBuffer.
    (CVE-2020-13659)

  - hw/pci/msix.c in QEMU 4.2.0 allows guest OS users to trigger an out-of-bounds access via a crafted address     in an msi-x mmio operation. (CVE-2020-13754)

  - hw/pci/pci.c in QEMU 4.2.0 allows guest OS users to trigger an out-of-bounds access by providing an     address near the end of the PCI configuration space. (CVE-2020-13791)

  - In QEMU through 5.0.0, an assertion failure can occur in the network packet processing. This issue affects     the e1000e and vmxnet3 network devices. A malicious guest user/process could use this flaw to abort the     QEMU process on the host, resulting in a denial of service condition in net_tx_pkt_add_raw_fragment in     hw/net/net_tx_pkt.c. (CVE-2020-16092)

  - A heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It     could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in     hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host,     resulting in a denial of service condition, or potentially execute arbitrary code with privileges of the     QEMU process on the host. (CVE-2020-17380)

  - QEMU 5.0.0 has a heap-based Buffer Overflow in flatview_read_continue in exec.c because hw/sd/sdhci.c     mishandles a write operation in the SDHC_BLKSIZE case. (CVE-2020-25085)

  - hw/usb/hcd-ohci.c in QEMU 5.0.0 has a stack-based buffer over-read via values obtained from the host     controller driver. (CVE-2020-25624)

  - hw/usb/hcd-ohci.c in QEMU 5.0.0 has an infinite loop when a TD list has a loop. (CVE-2020-25625)

  - eth_get_gso_type in net/eth.c in QEMU 4.2.1 allows guest OS users to trigger an assertion failure. A guest     can crash the QEMU process via packet data that lacks a valid Layer 3 protocol. (CVE-2020-27617)

  - hw/net/e1000e_core.c in QEMU 5.0.0 has an infinite loop via an RX descriptor with a NULL buffer address.
    (CVE-2020-28916)

  - The patch for CVE-2020-17380/CVE-2020-25085 was found to be ineffective, thus making QEMU vulnerable to     the out-of-bounds read/write access issues previously found in the SDHCI controller emulation code. This     flaw allows a malicious privileged guest to crash the QEMU process on the host, resulting in a denial of     service or potential code execution. QEMU up to (including) 5.2.0 is affected by this. (CVE-2021-3409)

  - A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions     up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get     bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the     host resulting in DoS scenario. (CVE-2021-3416)

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 openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:1942-1 advisory.

    - Switch method of splitting off hw-s390x-virtio-gpu-ccw.so as a module to what was accepted upstream     (bsc#1181103)
    - Fix OOB access in sdhci interface (CVE-2020-17380, bsc#1175144, CVE-2020-25085, bsc#1176681,     CVE-2021-3409, bsc#1182282)
    - Fix potential privilege escalation in virtiofsd tool (CVE-2021-20263, bsc#1183373)
    - Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)
    - Fix heap overflow in MSIx emulation (CVE-2020-27821, bsc#1179686)
    - Fix package scripts to not use hard coded paths for temporary working directories and log files     (bsc#1182425)
    - QEMU BIOS fails to read stage2 loader on s390x (bsc#1186290)
    - For the record, these issues are fixed in this package already.
      Most are alternate references to previously mentioned issues:
      (CVE-2019-15890, bsc#1149813, CVE-2020-8608, bsc#1163019,       CVE-2020-14364, bsc#1175534, CVE-2020-25707, bsc#1178683,       CVE-2020-25723, bsc#1178935, CVE-2020-29130, bsc#1179477,       CVE-2020-29129, bsc#1179484, CVE-2021-3419, bsc#1182975)

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

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

According to the versions of the qemu-kvm packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in QEMU. A heap-based buffer overflow     vulnerability was found in the SDHCI device emulation     support allowing a guest user or process to crash the     QEMU process on the host resulting in a denial of     service condition, or potentially execute arbitrary     code with privileges of the QEMU process on the host.
    The highest threat from this vulnerability is to data     confidentiality and integrity as well as system     availability.(CVE-2020-17380)

  - A flaw was found in QEMU. An out-of-bounds read/write     access issue was found in the SDHCI Controller emulator     of QEMU. It may occur while doing multi block SDMA, if     transfer block size exceeds the     's->fifo_buffer[s->buf_maxsz]' size which would leave     the current element pointer 's->data_count' pointing     out of bounds. This would lead the subsequent DMA r/w     operation to an OOB access issue where a guest     user/process may use this flaw to crash the QEMU     process resulting in DoS scenario. The highest threat     from this vulnerability is to data confidentiality and     integrity as well as system     availability.(CVE-2020-25085)

  - The patch for CVE-2020-17380 and CVE-2020-25085, both     involving a heap buffer overflow in the SDHCI     controller emulation code of QEMU, was found to be     incomplete. A malicious privileged guest could     reproduce the same issues with specially crafted input,     inducing a bogus transfer and subsequent out-of-bounds     read/write access in sdhci_do_adma() or     sdhci_sdma_transfer_multi_blocks(). CVE-2021-3409 was     assigned to facilitate the tracking and backporting of     the new patch.(CVE-2021-3409)

  - A potential stack overflow via infinite loop issue was     found in various NIC emulators of QEMU. The issue     occurs in loopback mode of a NIC wherein reentrant DMA     checks get bypassed. A guest user/process may use this     flaw to consume CPU cycles or crash the QEMU process on     the host resulting in DoS scenario.(CVE-2021-3416)

  - An infinite loop flaw was found in the USB OHCI     controller emulator of QEMU. This flaw occurs while     servicing OHCI isochronous transfer descriptors (TD) in     the ohci_service_iso_td routine, as it retires a TD if     it has passed its time frame. It does not check if the     TD was already processed and holds an error code in     TD_CC. This issue may happen if the TD list has a loop.
    This flaw allows a guest user or process to consume CPU     cycles on the host, resulting in a denial of     service.(CVE-2020-25625)

  - An infinite loop flaw was found in the e1000e device     emulator in QEMU. This issue could occur while     receiving packets via the     e1000e_write_packet_to_guest() routine, if the     receive(RX) descriptor has a NULL buffer address. This     flaw allows a privileged guest user to cause a denial     of service. The highest threat from this vulnerability     is to system availability.(CVE-2020-28916)

  - An assert(3) failure flaw was found in the networking     helper functions of QEMU. This vulnerability can occur     in the eth_get_gso_type() routine if a packet does not     have a valid networking L3 protocol (ex. IPv4, IPv6)     value. This flaw allows a guest user to crash the QEMU     process on the host, resulting in a denial of     service.(CVE-2020-27617)

  - A use-after-free flaw was found in the USB(xHCI/eHCI)     controller emulators of QEMU. This flaw occurs while     setting up the USB packet as a usb_packet_map() routine     and returns an error that was not checked. This flaw     allows a guest user or process to crash the QEMU     process, resulting in a denial of     service.(CVE-2020-25084)

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.

According to the versions of the qemu-kvm packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - A potential stack overflow via infinite loop issue was     found in various NIC emulators of QEMU in versions up     to and including 5.2.0. The issue occurs in loopback     mode of a NIC wherein reentrant DMA checks get     bypassed. A guest user/process may use this flaw to     consume CPU cycles or crash the QEMU process on the     host resulting in DoS scenario.(CVE-2021-34161)

  - hw/pci/pci.c in QEMU 4.2.0 allows guest OS users to     trigger an out-of-bounds access by providing an address     near the end of the PCI configuration     space.(CVE-2020-13791)

  - hw/pci/msix.c in QEMU 4.2.0 allows guest OS users to     trigger an out-of-bounds access via a crafted address     in an msi-x mmio operation.(CVE-2020-13754)

  - A heap-based buffer overflow was found in QEMU through     5.0.0 in the SDHCI device emulation support. It could     occur while doing a multi block SDMA transfer via the     sdhci_sdma_transfer_multi_blocks() routine in     hw/sd/sdhci.c. A guest user or process could use this     flaw to crash the QEMU process on the host, resulting     in a denial of service condition, or potentially     execute arbitrary code with privileges of the QEMU     process on the host. (CVE-2020-17380)

  - QEMU 5.0.0 has a heap-based Buffer Overflow in     flatview_read_continue in exec.c because hw/sd/sdhci.c     mishandles a write operation in the SDHC_BLKSIZE case.
    (CVE-2020-25085)

  - The patch for CVE-2020-17380/CVE-2020-25085 was found     to be ineffective, thus making QEMU vulnerable to the     out-of-bounds read/write access issues previously found     in the SDHCI controller emulation code. This flaw     allows a malicious privileged guest to crash the QEMU     process on the host, resulting in a denial of service     or potential code execution. QEMU up to (including)     5.2.0 is affected by this. (CVE-2021-3409)

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 SUSE Linux SLED15 / SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:1942-1 advisory.

    - Switch method of splitting off hw-s390x-virtio-gpu-ccw.so as a module to what was accepted upstream     (bsc#1181103)
    - Fix OOB access in sdhci interface (CVE-2020-17380, bsc#1175144, CVE-2020-25085, bsc#1176681,     CVE-2021-3409, bsc#1182282)
    - Fix potential privilege escalation in virtiofsd tool (CVE-2021-20263, bsc#1183373)
    - Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)
    - Fix heap overflow in MSIx emulation (CVE-2020-27821, bsc#1179686)
    - Fix package scripts to not use hard coded paths for temporary working directories and log files     (bsc#1182425)
    - QEMU BIOS fails to read stage2 loader on s390x (bsc#1186290)
    - For the record, these issues are fixed in this package already.
      Most are alternate references to previously mentioned issues:
      (CVE-2019-15890, bsc#1149813, CVE-2020-8608, bsc#1163019,       CVE-2020-14364, bsc#1175534, CVE-2020-25707, bsc#1178683,       CVE-2020-25723, bsc#1178935, CVE-2020-29130, bsc#1179477,       CVE-2020-29129, bsc#1179484, CVE-2021-3419, bsc#1182975)

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

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

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

  - ide_atapi_cmd_reply_end in hw/ide/atapi.c in QEMU 5.1.0     allows out-of-bounds read access because a buffer index     is not validated. (CVE-2020-29443)

  - An out-of-bounds read/write access flaw was found in     the USB emulator of the QEMU in versions before 5.2.0.
    This issue occurs while processing USB packets from a     guest when USBDevice 'setup_len' exceeds its     'data_buf[4096]' in the do_token_in, do_token_out     routines. This flaw allows a guest user to crash the     QEMU process, resulting in a denial of service, or the     potential execution of arbitrary code with the     privileges of the QEMU process on the host.
    (CVE-2020-14364)

  - hw/pci/msix.c in QEMU 4.2.0 allows guest OS users to     trigger an out-of-bounds access via a crafted address     in an msi-x mmio operation.(CVE-2020-13754)

  - In QEMU 4.2.0, a MemoryRegionOps object may lack     read/write callback methods, leading to a NULL pointer     dereference.(CVE-2020-15469)

  - A heap-based buffer overflow was found in QEMU through     5.0.0 in the SDHCI device emulation support. It could     occur while doing a multi block SDMA transfer via the     sdhci_sdma_transfer_multi_blocks() routine in     hw/sd/sdhci.c. A guest user or process could use this     flaw to crash the QEMU process on the host, resulting     in a denial of service condition, or potentially     execute arbitrary code with privileges of the QEMU     process on the host.(CVE-2020-17380)

  - QEMU 5.0.0 has a heap-based Buffer Overflow in     flatview_read_continue in exec.c because hw/sd/sdhci.c     mishandles a write operation in the SDHC_BLKSIZE     case.(CVE-2020-25085)

  - The patch for CVE-2020-17380/CVE-2020-25085 was found     to be ineffective, thus making QEMU vulnerable to the     out-of-bounds read/write access issues previously found     in the SDHCI controller emulation code. This flaw     allows a malicious privileged guest to crash the QEMU     process on the host, resulting in a denial of service     or potential code execution. QEMU up to (including)     5.2.0 is affected by this.(CVE-2021-3409)

  - A potential stack overflow via infinite loop issue was     found in various NIC emulators of QEMU in versions up     to and including 5.2.0. The issue occurs in loopback     mode of a NIC wherein reentrant DMA checks get     bypassed. A guest user/process may use this flaw to     consume CPU cycles or crash the QEMU process on the     host resulting in DoS scenario.(CVE-2021-3416)

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.

Several security vulnerabilities have been discovered in QEMU, a fast processor emulator.

CVE-2021-20257

net: e1000: infinite loop while processing transmit descriptors

CVE-2021-20255

A stack overflow via an infinite recursion vulnerability was found in the eepro100 i8255x device emulator of QEMU. This issue occurs while processing controller commands due to a DMA reentry issue. This flaw allows a guest user or process to consume CPU cycles or crash the QEMU process on the host, resulting in a denial of service.

CVE-2021-20203

An integer overflow issue was found in the vmxnet3 NIC emulator of the QEMU. It may occur if a guest was to supply invalid values for rx/tx queue size or other NIC parameters. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.

CVE-2021-3416

A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0.
The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario.

CVE-2021-3416

The patch for CVE-2020-17380/CVE-2020-25085 was found to be ineffective, thus making QEMU vulnerable to the out-of-bounds read/write access issues previously found in the SDHCI controller emulation code. This flaw allows a malicious privileged guest to crash the QEMU process on the host, resulting in a denial of service or potential code execution.

For Debian 9 stretch, these problems have been fixed in version 1:2.8+dfsg-6+deb9u14.

We recommend that you upgrade your qemu packages.

For the detailed security status of qemu please refer to its security tracker page at: https://security-tracker.debian.org/tracker/qemu

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

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4650-1 advisory.

    Alexander Bulekov discovered that QEMU incorrectly handled SDHCI device emulation. An attacker inside the     guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute     arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would     be isolated by the libvirt AppArmor profile.

    (CVE-2020-17380)

    Sergej Schumilo, Cornelius Aschermann, and Simon Wrner discovered that QEMU incorrectly handled USB device     emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial     of service. (CVE-2020-25084)

    Sergej Schumilo, Cornelius Aschermann, and Simon Wrner discovered that QEMU incorrectly handled SDHCI     device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a     denial of service. (CVE-2020-25085)

    Gaoning Pan, Yongkang Jia, and Yi Ren discovered that QEMU incorrectly handled USB device emulation. An     attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
    (CVE-2020-25624)

    It was discovered that QEMU incorrectly handled USB device emulation. An attacker inside the guest could     use this issue to cause QEMU to hang, resulting in a denial of service. (CVE-2020-25625)

    Cheolwoo Myung discovered that QEMU incorrectly handled USB device emulation. An attacker inside the guest     could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2020-25723)

    Gaoning Pan discovered that QEMU incorrectly handled ATI graphics device emulation. An attacker inside the     guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only     affected Ubuntu 20.04 LTS and Ubuntu 20.10. (CVE-2020-27616)

    Gaoning Pan discovered that QEMU incorrectly handled networking. An attacker inside the guest could use     this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2020-27617)

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.

ID	Name	Product	Family	Severity
320399	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS : QEMU vulnerabilities (USN-8412-1)	Nessus	Ubuntu Local Security Checks	high
406788	Alpine: multiple qemu packages: security update to 5.1.0-r1	Tenable Cloud Security	Alpine Linux Local Security Checks	medium
406788	Alpine: multiple qemu packages: security update to 5.1.0-r1	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	medium
172642	SUSE SLES12: qemu / qemu-arm / qemu-audio-alsa / qemu-audio-oss / qemu-audio-pa / etc (SUSE-SU-2023:0761-1)	Nessus	SuSE Local Security Checks	high
172554	Debian dla-3362 : qemu - security update	Nessus	Debian Local Security Checks	high
166597	SUSE SLES15: qemu / qemu-arm / qemu-audio-alsa / qemu-audio-oss / qemu-audio-pa / etc (SUSE-SU-2022:3768-1)	Nessus	SuSE Local Security Checks	high
156489	EulerOS Virtualization 3.0.2.6 : qemu-kvm (EulerOS-SA-2021-2855)	Nessus	Huawei Local Security Checks	medium
151714	openSUSE 15 Security Update : qemu (openSUSE-SU-2021:1942-1)	Nessus	SuSE Local Security Checks	medium
151333	EulerOS Virtualization for ARM 64 3.0.2.0 : qemu-kvm (EulerOS-SA-2021-2125)	Nessus	Huawei Local Security Checks	medium
151162	EulerOS Virtualization for ARM 64 3.0.6.0 : qemu-kvm (EulerOS-SA-2021-2011)	Nessus	Huawei Local Security Checks	medium
150736	SUSE SLED15: qemu / qemu-arm / qemu-audio-alsa / qemu-audio-pa / etc (SUSE-SU-2021:1942-1)	Nessus	SuSE Local Security Checks	medium
148632	EulerOS Virtualization 2.9.0 : qemu (EulerOS-SA-2021-1763)	Nessus	Huawei Local Security Checks	medium
148583	EulerOS Virtualization 2.9.1 : qemu (EulerOS-SA-2021-1735)	Nessus	Huawei Local Security Checks	medium
148442	Debian DLA-2623-1 : qemu security update	Nessus	Debian Local Security Checks	medium
143376	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : QEMU vulnerabilities (USN-4650-1)	Nessus	Ubuntu Local Security Checks	medium

Detections

Analytics

CVE-2020-17380

medium

Tenable Plugins

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