An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially crafted payload message, resulting in a denial of service.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-2757 advisory.

  - A crafted NTFS image can cause a heap-based buffer overflow in ntfs_names_full_collate in NTFS-3G through     2021.8.22. (CVE-2022-30786)

  - A crafted NTFS image can cause a heap-based buffer overflow in ntfs_check_log_client_array in NTFS-3G     through 2021.8.22. (CVE-2022-30789)

  - A crafted NTFS image can cause a heap-based buffer overflow in ntfs_mft_rec_alloc in NTFS-3G through     2021.8.22. (CVE-2022-30788)

  - An out-of-bounds read vulnerability exists in TPM2.0's Module Library allowing a 2-byte read past the end     of a TPM2.0 command in the CryptParameterDecryption routine. An attacker who can successfully exploit this     vulnerability can read or access sensitive data stored in the TPM. (CVE-2023-1018)

  - ntfsck in NTFS-3G through 2021.8.22 has a heap-based buffer overflow involving buffer+512*3-2. NOTE: the     upstream position is that ntfsck is deprecated; however, it is shipped by some Linux distributions.
    (CVE-2021-46790)

  - A crafted NTFS image can cause heap exhaustion in ntfs_get_attribute_value in NTFS-3G through 2021.8.22.
    (CVE-2022-30784)

  - An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the     extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially     crafted payload message, resulting in a denial of service. (CVE-2022-3165)

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 package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - 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-2020-14394)

  - A heap buffer overflow was found in the floppy disk emulator of QEMU up to 6.0.0 (including). It could     occur in fdctrl_transfer_handler() in hw/block/fdc.c while processing DMA read data transfers from the     floppy drive to the guest system. A privileged guest user could use this flaw to crash the QEMU process on     the host resulting in DoS scenario, or potential information leakage from the host memory. (CVE-2021-3507)

  - A stack overflow vulnerability was found in the Intel HD Audio device (intel-hda) of QEMU. A malicious     guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service     condition. The highest threat from this vulnerability is to system availability. This flaw affects QEMU     versions prior to 7.0.0. (CVE-2021-3611)

  - 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 NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within     the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service     condition. (CVE-2021-4158)

  - A flaw was found in the QXL display device emulation in QEMU. An integer overflow in the cursor_alloc()     function can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer     overflow. This flaw allows a malicious privileged guest user to crash the QEMU process on the host or     potentially execute arbitrary code within the context of the QEMU process. (CVE-2021-4206)

  - A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values     `cursor->header.width` and `cursor->header.height` can lead to the allocation of a small cursor object     followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw     to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU     process. (CVE-2021-4207)

  - 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-2022-0216)

  - A flaw was found in the QEMU virtio-fs shared file system daemon (virtiofsd) implementation. This flaw is     strictly related to CVE-2018-13405. A local guest user can create files in the directories shared by     virtio-fs with unintended group ownership in a scenario where a directory is SGID to a certain group and     is writable by a user who is not a member of the group. This could allow a malicious unprivileged user     inside the guest to gain access to resources accessible to the root group, potentially escalating their     privileges within the guest. A malicious local user in the host might also leverage this unexpected     executable file created by the guest to escalate their privileges on the host system. (CVE-2022-0358)

  - A flaw was found in the virtio-net device of QEMU. This flaw was inadvertently introduced with the fix for     CVE-2021-3748, which forgot to unmap the cached virtqueue elements on error, leading to memory leakage and     other unexpected results. Affected QEMU version: 6.2.0. (CVE-2022-26353)

  - A flaw was found in the vhost-vsock device of QEMU. In case of error, an invalid element was not detached     from the virtqueue before freeing its memory, leading to memory leakage and other unexpected results.
    Affected QEMU versions <= 6.2.0. (CVE-2022-26354)

  - An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the     extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially     crafted payload message, resulting in a denial of service. (CVE-2022-3165)

  - softmmu/physmem.c in QEMU through 7.0.0 can perform an uninitialized read on the translate_fail path,     leading to an io_readx or io_writex crash. NOTE: a third party states that the Non-virtualization Use Case     in the qemu.org reference applies here, i.e., 'Bugs affecting the non-virtualization use case are not     considered security bugs at this time. (CVE-2022-35414)

  - An off-by-one read/write issue was found in the SDHCI device of QEMU. It occurs when reading/writing the     Buffer Data Port Register in sdhci_read_dataport and sdhci_write_dataport, respectively, if data_count ==     block_size. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a     denial of service condition. (CVE-2022-3872)

  - An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt()     function does not check the size of the structure pointed to by the guest physical address, potentially     reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to     crash the QEMU process on the host causing a denial of service condition. (CVE-2022-4144)

  - 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)

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 AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2023:2757 advisory.

  - ntfsck in NTFS-3G through 2021.8.22 has a heap-based buffer overflow involving buffer+512*3-2. NOTE: the     upstream position is that ntfsck is deprecated; however, it is shipped by some Linux distributions.
    (CVE-2021-46790)

  - A crafted NTFS image can cause heap exhaustion in ntfs_get_attribute_value in NTFS-3G through 2021.8.22.
    (CVE-2022-30784)

  - A crafted NTFS image can cause a heap-based buffer overflow in ntfs_names_full_collate in NTFS-3G through     2021.8.22. (CVE-2022-30786)

  - A crafted NTFS image can cause a heap-based buffer overflow in ntfs_mft_rec_alloc in NTFS-3G through     2021.8.22. (CVE-2022-30788)

  - A crafted NTFS image can cause a heap-based buffer overflow in ntfs_check_log_client_array in NTFS-3G     through 2021.8.22. (CVE-2022-30789)

  - An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the     extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially     crafted payload message, resulting in a denial of service. (CVE-2022-3165)

  - An out-of-bounds read vulnerability exists in TPM2.0's Module Library allowing a 2-byte read past the end     of a TPM2.0 command in the CryptParameterDecryption routine. An attacker who can successfully exploit this     vulnerability can read or access sensitive data stored in the TPM. (CVE-2023-1018)

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

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2023:2757 advisory.

  - ntfsck in NTFS-3G through 2021.8.22 has a heap-based buffer overflow involving buffer+512*3-2. NOTE: the     upstream position is that ntfsck is deprecated; however, it is shipped by some Linux distributions.
    (CVE-2021-46790)

  - A crafted NTFS image can cause heap exhaustion in ntfs_get_attribute_value in NTFS-3G through 2021.8.22.
    (CVE-2022-30784)

  - A crafted NTFS image can cause a heap-based buffer overflow in ntfs_names_full_collate in NTFS-3G through     2021.8.22. (CVE-2022-30786)

  - A crafted NTFS image can cause a heap-based buffer overflow in ntfs_mft_rec_alloc in NTFS-3G through     2021.8.22. (CVE-2022-30788)

  - A crafted NTFS image can cause a heap-based buffer overflow in ntfs_check_log_client_array in NTFS-3G     through 2021.8.22. (CVE-2022-30789)

  - An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the     extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially     crafted payload message, resulting in a denial of service. (CVE-2022-3165)

  - An out-of-bounds read vulnerability exists in TPM2.0's Module Library allowing a 2-byte read past the end     of a TPM2.0 command in the CryptParameterDecryption routine. An attacker who can successfully exploit this     vulnerability can read or access sensitive data stored in the TPM. (CVE-2023-1018)

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-2023:2757 advisory.

  - ntfs-3g: heap-based buffer overflow in ntfsck (CVE-2021-46790)

  - QEMU: VNC: integer underflow in vnc_client_cut_text_ext leads to CPU exhaustion (CVE-2022-3165)

  - ntfs-3g: crafted NTFS image can cause heap exhaustion in ntfs_get_attribute_value (CVE-2022-30784)

  - ntfs-3g: crafted NTFS image can cause a heap-based buffer overflow in ntfs_names_full_collate     (CVE-2022-30786)

  - ntfs-3g: crafted NTFS image can cause a heap-based buffer overflow in ntfs_mft_rec_alloc (CVE-2022-30788)

  - ntfs-3g: crafted NTFS image can cause a heap-based buffer overflow in ntfs_check_log_client_array     (CVE-2022-30789)

  - tpm2: TCG TPM2.0 implementations vulnerable to memory corruption (CVE-2023-1018)

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 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-2162 advisory.

  - An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the     extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially     crafted payload message, resulting in a denial of service. (CVE-2022-3165)

  - An integer overflow and buffer overflow issues were found in the ACPI Error Record Serialization Table     (ERST) device of QEMU in the read_erst_record() and write_erst_record() functions. Both issues may allow     the guest to overrun the host buffer allocated for the ERST memory device. A malicious guest could use     these flaws to crash the QEMU process on the host. (CVE-2022-4172)

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-2023:2162 advisory.

  - An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the     extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially     crafted payload message, resulting in a denial of service. (CVE-2022-3165)

  - An integer overflow and buffer overflow issues were found in the ACPI Error Record Serialization Table     (ERST) device of QEMU in the read_erst_record() and write_erst_record() functions. Both issues may allow     the guest to overrun the host buffer allocated for the ERST memory device. A malicious guest could use     these flaws to crash the QEMU process on the host. (CVE-2022-4172)

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-2023:2162 advisory.

  - QEMU: VNC: integer underflow in vnc_client_cut_text_ext leads to CPU exhaustion (CVE-2022-3165)

  - QEMU: ACPI ERST: memory corruption issues in read_erst_record and write_erst_record (CVE-2022-4172)

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-2023-12195 advisory.

  - 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. (CVE-2022-1050)

  - An integer overflow and buffer overflow issues were found in the ACPI Error Record Serialization Table     (ERST) device of QEMU in the read_erst_record() and write_erst_record() functions. Both issues may allow     the guest to overrun the host buffer allocated for the ERST memory device. A malicious guest could use     these flaws to crash the QEMU process on the host. (CVE-2022-4172)

  - An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt()     function does not check the size of the structure pointed to by the guest physical address, potentially     reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to     crash the QEMU process on the host causing a denial of service condition. (CVE-2022-4144)

  - An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the     extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially     crafted payload message, resulting in a denial of service. (CVE-2022-3165)

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-2023:0671-1 advisory.

  - 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. (CVE-2022-1050)

  - An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the     extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially     crafted payload message, resulting in a denial of service. (CVE-2022-3165)

  - An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt()     function does not check the size of the structure pointed to by the guest physical address, potentially     reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to     crash the QEMU process on the host causing a denial of service condition. (CVE-2022-4144)

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-2023-12108 advisory.

  - 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. (CVE-2022-1050)

  - A flaw was found in libvirt while it generates SELinux MCS category pairs for VMs' dynamic labels. This     flaw allows one exploited guest to access files labeled for another guest, resulting in the breaking out     of sVirt confinement. The highest threat from this vulnerability is to confidentiality and integrity.
    (CVE-2021-3631)

  - An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in     the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for     the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the     host, resulting in a denial of service. (CVE-2021-3638)

  - An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the     extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially     crafted payload message, resulting in a denial of service. (CVE-2022-3165)

  - An integer overflow and buffer overflow issues were found in the ACPI Error Record Serialization Table     (ERST) device of QEMU in the read_erst_record() and write_erst_record() functions. Both issues may allow     the guest to overrun the host buffer allocated for the ERST memory device. A malicious guest could use     these flaws to crash the QEMU process on the host. (CVE-2022-4172)

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 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-12065 advisory.

  - An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the     extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially     crafted payload message, resulting in a denial of service. (CVE-2022-3165)

  - An integer overflow and buffer overflow issues were found in the ACPI Error Record Serialization Table     (ERST) device of QEMU in the read_erst_record() and write_erst_record() functions. Both issues may allow     the guest to overrun the host buffer allocated for the ERST memory device. A malicious guest could use     these flaws to crash the QEMU process on the host. (CVE-2022-4172)

  - An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in     the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for     the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the     host, resulting in a denial of service. (CVE-2021-3638)

  - 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. (CVE-2022-1050)

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

The remote Fedora 36 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2022-8dcdfe7297 advisory.

  - An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the     extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially     crafted payload message, resulting in a denial of service. (CVE-2022-3165)

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

The remote Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5772-1 advisory.

  - A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs     when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A     malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata,     resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the     host. (CVE-2021-3682)

  - 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)

  - An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE     SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious     guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition.
    (CVE-2021-3930)

  - 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-2022-0216)

  - A DMA reentrancy issue was found in the Tulip device emulation in QEMU. When Tulip reads or writes to the     rx/tx descriptor or copies the rx/tx frame, it doesn't check whether the destination address is its own     MMIO address. This can cause the device to trigger MMIO handlers multiple times, possibly leading to a     stack or heap overflow. A malicious guest could use this flaw to crash the QEMU process on the host,     resulting in a denial of service condition. (CVE-2022-2962)

  - An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the     extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially     crafted payload message, resulting in a denial of service. (CVE-2022-3165)

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
180965	Oracle Linux 8 : virt:ol / and / virt-devel:rhel (ELSA-2023-2757)	Nessus	Oracle Linux Local Security Checks	high
176865	EulerOS Virtualization 2.11.1 : qemu (EulerOS-SA-2023-2082)	Nessus	Huawei Local Security Checks	high
176798	EulerOS Virtualization 2.11.0 : qemu (EulerOS-SA-2023-2134)	Nessus	Huawei Local Security Checks	high
176122	AlmaLinux 8 : virt:rhel and virt-devel:rhel (ALSA-2023:2757)	Nessus	Alma Linux Local Security Checks	high
175891	CentOS 8 : virt:rhel and virt-devel:rhel (CESA-2023:2757)	Nessus	CentOS Local Security Checks	high
175828	RHEL 8 : virt:rhel and virt-devel:rhel (RHSA-2023:2757)	Nessus	Red Hat Local Security Checks	high
175701	Oracle Linux 9 : qemu-kvm (ELSA-2023-2162)	Nessus	Oracle Linux Local Security Checks	medium
175625	AlmaLinux 9 : qemu-kvm (ALSA-2023:2162)	Nessus	Alma Linux Local Security Checks	medium
175443	RHEL 9 : qemu-kvm (RHSA-2023:2162)	Nessus	Red Hat Local Security Checks	medium
172674	Oracle Linux 8 : virt:kvm_utils2 (ELSA-2023-12195)	Nessus	Oracle Linux Local Security Checks	high
172404	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : qemu (SUSE-SU-2023:0671-1)	Nessus	SuSE Local Security Checks	high
171222	Oracle Linux 8 : virt:kvm_utils (ELSA-2023-12108)	Nessus	Oracle Linux Local Security Checks	high
170462	Oracle Linux 7 : qemu (ELSA-2023-12065)	Nessus	Oracle Linux Local Security Checks	high
169028	Fedora 36 : 2:qemu (2022-8dcdfe7297)	Nessus	Fedora Local Security Checks	medium
168627	Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS / 22.04 LTS : QEMU vulnerabilities (USN-5772-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2022-3165

medium

Tenable Plugins

high

high

high

high

high

high

medium

medium

medium

high

high

high

high

medium

high