A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3778 advisory.

  - A NULL pointer dereference was found in the libvirt API responsible introduced in upstream version 3.10.0,     and fixed in libvirt 6.0.0, for fetching a storage pool based on its target path. In more detail, this     flaw affects storage pools created without a target path such as network-based pools like gluster and RBD.
    Unprivileged users with a read-only connection could abuse this flaw to crash the libvirt daemon,     resulting in a potential denial of service. (CVE-2020-10703)

  - An issue was discovered in qemuDomainGetStatsIOThread in qemu/qemu_driver.c in libvirt 4.10.0 though 6.x     before 6.1.0. A memory leak was found in the virDomainListGetStats libvirt API that is responsible for     retrieving domain statistics when managing QEMU guests. This flaw allows unprivileged users with a read-     only connection to cause a memory leak in the domstats command, resulting in a potential denial of     service. (CVE-2020-12430)

  - A double free memory issue was found to occur in the libvirt API, in versions before 6.8.0, responsible     for requesting information about network interfaces of a running QEMU domain. This flaw affects the polkit     access control driver. Specifically, clients connecting to the read-write socket with limited ACL     permissions could use this flaw to crash the libvirt daemon, resulting in a denial of service, or     potentially escalate their privileges on the system. The highest threat from this vulnerability is to data     confidentiality and integrity as well as system availability. (CVE-2020-25637)

  - 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 improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in     the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly     released on ACL permission failure. Clients connecting to the read-write socket with limited ACL     permissions could use this flaw to acquire the lock and prevent other users from accessing storage     pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability     is to system availability. (CVE-2021-3667)

  - A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in     qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a     monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is     shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial     of service attack by causing the libvirt daemon to crash. (CVE-2021-3975)

  - A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause     libvirtd on the host to deadlock or crash, resulting in a denial of service condition. (CVE-2021-4147)

  - A flaw was found in the libvirt nwfilter driver. The virNWFilterObjListNumOfNWFilters method failed to     acquire the driver->nwfilters mutex before iterating over virNWFilterObj instances. There was no     protection to stop another thread from concurrently modifying the driver->nwfilters object. This flaw     allows a malicious, unprivileged user to exploit this issue via libvirt's API virConnectNumOfNWFilters to     crash the network filter management daemon (libvirtd/virtnwfilterd). (CVE-2022-0897)

  - 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 RPC library APIs of libvirt. The RPC server deserialization code allocates memory     for arrays before the non-negative length check is performed by the C API entry points. Passing a negative     length to the g_new0 function results in a crash due to the negative length being treated as a huge     positive number. This flaw allows a local, unprivileged user to perform a denial of service attack by     causing the libvirt daemon to crash. (CVE-2024-2494)

  - A NULL pointer dereference flaw was found in the udevConnectListAllInterfaces() function in libvirt. This     issue can occur when detaching a host interface while at the same time collecting the list of interfaces     via virConnectListAllInterfaces API. This flaw could be used to perform a denial of service attack by     causing the libvirt daemon to crash. (CVE-2024-2496)

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

The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2022:1759 advisory.

  - A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while     processing read/write ioport commands if the selected floppy drive is not initialized with a block device.
    This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of     service. The highest threat from this vulnerability is to system availability. (CVE-2021-20196)

  - In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS attribute is supplied to the function     ntfs_get_attribute_value, a heap buffer overflow can occur allowing for memory disclosure or denial of     service. The vulnerability is caused by an out-of-bound buffer access which can be triggered by mounting a     crafted ntfs partition. The root cause is a missing consistency check after reading an MFT record : the     bytes_in_use field should be less than the bytes_allocated field. When it is not, the parsing of the     records proceeds into the wild. (CVE-2021-33285)

  - In NTFS-3G versions < 2021.8.22, when a specially crafted unicode string is supplied in an NTFS image a     heap buffer overflow can occur and allow for code execution. (CVE-2021-33286)

  - In NTFS-3G versions < 2021.8.22, when specially crafted NTFS attributes are read in the function     ntfs_attr_pread_i, a heap buffer overflow can occur and allow for writing to arbitrary memory or denial of     service of the application. (CVE-2021-33287)

  - In NTFS-3G versions < 2021.8.22, when a specially crafted MFT section is supplied in an NTFS image a heap     buffer overflow can occur and allow for code execution. (CVE-2021-33289)

  - In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS inode pathname is supplied in an NTFS image     a heap buffer overflow can occur resulting in memory disclosure, denial of service and even code     execution. (CVE-2021-35266)

  - NTFS-3G versions < 2021.8.22, a stack buffer overflow can occur when correcting differences in the MFT and     MFTMirror allowing for code execution or escalation of privileges when setuid-root. (CVE-2021-35267)

  - In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS inode is loaded in the function     ntfs_inode_real_open, a heap buffer overflow can occur allowing for code execution and escalation of     privileges. (CVE-2021-35268)

  - NTFS-3G versions < 2021.8.22, when a specially crafted NTFS attribute from the MFT is setup in the     function ntfs_attr_setup_flag, a heap buffer overflow can occur allowing for code execution and escalation     of privileges. (CVE-2021-35269)

  - A flaw was found in the hivex library. This flaw allows an attacker to input a specially crafted Windows     Registry (hive) file, which would cause hivex to recursively call the _get_children() function, leading to     a stack overflow. The highest threat from this vulnerability is to system availability. (CVE-2021-3622)

  - A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption     boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before     proxying everything else a client sends to the server, potentially leading the client to terminate the NBD     session. The highest threat from this vulnerability is to system availability. (CVE-2021-3716)

  - A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the     descriptor's address belongs to the non direct access region, due to num_buffers being set after the     virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a     denial of service condition, or potentially execute code on the host with the privileges of the QEMU     process. (CVE-2021-3748)

  - A crafted NTFS image can cause a NULL pointer dereference in ntfs_extent_inode_open in NTFS-3G <     2021.8.22. (CVE-2021-39251)

  - A crafted NTFS image can cause an out-of-bounds read in ntfs_ie_lookup in NTFS-3G < 2021.8.22.
    (CVE-2021-39252)

  - A crafted NTFS image can cause an out-of-bounds read in ntfs_runlists_merge_i in NTFS-3G < 2021.8.22.
    (CVE-2021-39253)

  - A crafted NTFS image can cause an integer overflow in memmove, leading to a heap-based buffer overflow in     the function ntfs_attr_record_resize, in NTFS-3G < 2021.8.22. (CVE-2021-39254)

  - A crafted NTFS image can trigger an out-of-bounds read, caused by an invalid attribute in     ntfs_attr_find_in_attrdef, in NTFS-3G < 2021.8.22. (CVE-2021-39255)

  - A crafted NTFS image can cause a heap-based buffer overflow in ntfs_inode_lookup_by_name in NTFS-3G <     2021.8.22. (CVE-2021-39256)

  - A crafted NTFS image with an unallocated bitmap can lead to a endless recursive function call chain     (starting from ntfs_attr_pwrite), causing stack consumption in NTFS-3G < 2021.8.22. (CVE-2021-39257)

  - A crafted NTFS image can cause out-of-bounds reads in ntfs_attr_find and ntfs_external_attr_find in     NTFS-3G < 2021.8.22. (CVE-2021-39258)

  - A crafted NTFS image can trigger an out-of-bounds access, caused by an unsanitized attribute length in     ntfs_inode_lookup_by_name, in NTFS-3G < 2021.8.22. (CVE-2021-39259)

  - A crafted NTFS image can cause an out-of-bounds access in ntfs_inode_sync_standard_information in NTFS-3G     < 2021.8.22. (CVE-2021-39260)

  - A crafted NTFS image can cause a heap-based buffer overflow in ntfs_compressed_pwrite in NTFS-3G <     2021.8.22. (CVE-2021-39261)

  - A crafted NTFS image can cause an out-of-bounds access in ntfs_decompress in NTFS-3G < 2021.8.22.
    (CVE-2021-39262)

  - A crafted NTFS image can trigger a heap-based buffer overflow, caused by an unsanitized attribute in     ntfs_get_attribute_value, in NTFS-3G < 2021.8.22. (CVE-2021-39263)

  - A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in     qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a     monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is     shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial     of service attack by causing the libvirt daemon to crash. (CVE-2021-3975)

  - A NULL pointer dereference issue was found in the block mirror layer of QEMU in versions prior to 6.2.0.
    The `self` pointer is dereferenced in mirror_wait_on_conflicts() without ensuring that it's not NULL. A     malicious unprivileged user within the guest could use this flaw to crash the QEMU process on the host     when writing data reaches the threshold of mirroring node. (CVE-2021-4145)

  - 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 copying tool `nbdcopy` of libnbd. When performing multi-threaded copies using     asynchronous nbd calls, nbdcopy was blindly treating the completion of an asynchronous command as     successful, rather than checking the *error parameter. This could result in the silent creation of a     corrupted destination image. (CVE-2022-0485)

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

  - A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in     qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a     monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is     shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial     of service attack by causing the libvirt daemon to crash. (CVE-2021-3975)

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

  - A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in     qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a     monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is     shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial     of service attack by causing the libvirt daemon to crash. (CVE-2021-3975)

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

  - A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in     qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a     monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is     shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial     of service attack by causing the libvirt daemon to crash. (CVE-2021-3975)

  - A flaw was found in the libvirt nwfilter driver. The virNWFilterObjListNumOfNWFilters method failed to     acquire the driver->nwfilters mutex before iterating over virNWFilterObj instances. There was no     protection to stop another thread from concurrently modifying the driver->nwfilters object. This flaw     allows a malicious, unprivileged user to exploit this issue via libvirt's API virConnectNumOfNWFilters to     crash the network filter management daemon (libvirtd/virtnwfilterd). (CVE-2022-0897)

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 Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-9700 advisory.

  - 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 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)

  - libvirt: segmentation fault during VM shutdown can lead to vdsm hang (CVE-2021-3975)

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 a vulnerability as referenced in the ELSA-2022-9668 advisory.

  - libvirt: segmentation fault during VM shutdown can lead to vdsm hang (CVE-2021-3975)

Note that Nessus has not tested for this issue 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-2022-1759 advisory.

  - A flaw was found in the hivex library. This flaw allows an attacker to input a specially crafted Windows     Registry (hive) file, which would cause hivex to recursively call the _get_children() function, leading to     a stack overflow. The highest threat from this vulnerability is to system availability. (CVE-2021-3622)

  - QEMU: NULL pointer dereference in pci_write() in hw/acpi/pcihp.c (CVE-2021-4158)

  - libnbd: nbdcopy: missing error handling may create corrupted destination image (CVE-2022-0485)

  - A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while     processing read/write ioport commands if the selected floppy drive is not initialized with a block device.
    This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of     service. The highest threat from this vulnerability is to system availability. (CVE-2021-20196)

  - A NULL pointer dereference issue was found in the block mirror layer of QEMU in versions prior to 6.2.0.
    The `self` pointer is dereferenced in mirror_wait_on_conflicts() without ensuring that it's not NULL. A     malicious unprivileged user within the guest could use this flaw to crash the QEMU process on the host     when writing data reaches the threshold of mirroring node. (CVE-2021-4145)

  - A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption     boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before     proxying everything else a client sends to the server, potentially leading the client to terminate the NBD     session. The highest threat from this vulnerability is to system availability. (CVE-2021-3716)

  - A crafted NTFS image can cause a heap-based buffer overflow in ntfs_inode_lookup_by_name in NTFS-3G <     2021.8.22. (CVE-2021-39256)

  - A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the     descriptor's address belongs to the non direct access region, due to num_buffers being set after the     virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a     denial of service condition, or potentially execute code on the host with the privileges of the QEMU     process. (CVE-2021-3748)

  - A crafted NTFS image can cause a NULL pointer dereference in ntfs_extent_inode_open in NTFS-3G <     2021.8.22. (CVE-2021-39251)

  - In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS attribute is supplied to the function     ntfs_get_attribute_value, a heap buffer overflow can occur allowing for memory disclosure or denial of     service. The vulnerability is caused by an out-of-bound buffer access which can be triggered by mounting a     crafted ntfs partition. The root cause is a missing consistency check after reading an MFT record : the     bytes_in_use field should be less than the bytes_allocated field. When it is not, the parsing of the     records proceeds into the wild. (CVE-2021-33285)

  - In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS inode pathname is supplied in an NTFS image     a heap buffer overflow can occur resulting in memory disclosure, denial of service and even code     execution. (CVE-2021-35266)

  - NTFS-3G versions < 2021.8.22, a stack buffer overflow can occur when correcting differences in the MFT and     MFTMirror allowing for code execution or escalation of privileges when setuid-root. (CVE-2021-35267)

  - In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS inode is loaded in the function     ntfs_inode_real_open, a heap buffer overflow can occur allowing for code execution and escalation of     privileges. (CVE-2021-35268)

  - NTFS-3G versions < 2021.8.22, when a specially crafted NTFS attribute from the MFT is setup in the     function ntfs_attr_setup_flag, a heap buffer overflow can occur allowing for code execution and escalation     of privileges. (CVE-2021-35269)

  - A crafted NTFS image can cause an out-of-bounds read in ntfs_runlists_merge_i in NTFS-3G < 2021.8.22.
    (CVE-2021-39253)

  - A crafted NTFS image with an unallocated bitmap can lead to a endless recursive function call chain     (starting from ntfs_attr_pwrite), causing stack consumption in NTFS-3G < 2021.8.22. (CVE-2021-39257)

  - A crafted NTFS image can cause out-of-bounds reads in ntfs_attr_find and ntfs_external_attr_find in     NTFS-3G < 2021.8.22. (CVE-2021-39258)

  - A crafted NTFS image can trigger an out-of-bounds access, caused by an unsanitized attribute length in     ntfs_inode_lookup_by_name, in NTFS-3G < 2021.8.22. (CVE-2021-39259)

  - A crafted NTFS image can trigger a heap-based buffer overflow, caused by an unsanitized attribute in     ntfs_get_attribute_value, in NTFS-3G < 2021.8.22. (CVE-2021-39263)

  - libvirt: segmentation fault during VM shutdown can lead to vdsm hang (CVE-2021-3975)

  - In NTFS-3G versions < 2021.8.22, when a specially crafted MFT section is supplied in an NTFS image a heap     buffer overflow can occur and allow for code execution. (CVE-2021-33289)

  - A crafted NTFS image can cause an out-of-bounds access in ntfs_inode_sync_standard_information in NTFS-3G     < 2021.8.22. (CVE-2021-39260)

  - A crafted NTFS image can cause an out-of-bounds access in ntfs_decompress in NTFS-3G < 2021.8.22.
    (CVE-2021-39262)

  - In NTFS-3G versions < 2021.8.22, when a specially crafted unicode string is supplied in an NTFS image a     heap buffer overflow can occur and allow for code execution. (CVE-2021-33286)

  - In NTFS-3G versions < 2021.8.22, when specially crafted NTFS attributes are read in the function     ntfs_attr_pread_i, a heap buffer overflow can occur and allow for writing to arbitrary memory or denial of     service of the application. (CVE-2021-33287)

  - A crafted NTFS image can cause an out-of-bounds read in ntfs_ie_lookup in NTFS-3G < 2021.8.22.
    (CVE-2021-39252)

  - A crafted NTFS image can cause an integer overflow in memmove, leading to a heap-based buffer overflow in     the function ntfs_attr_record_resize, in NTFS-3G < 2021.8.22. (CVE-2021-39254)

  - A crafted NTFS image can trigger an out-of-bounds read, caused by an invalid attribute in     ntfs_attr_find_in_attrdef, in NTFS-3G < 2021.8.22. (CVE-2021-39255)

  - A crafted NTFS image can cause a heap-based buffer overflow in ntfs_compressed_pwrite in NTFS-3G <     2021.8.22. (CVE-2021-39261)

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-2022:1759 advisory.

  - A flaw was found in the hivex library. This flaw allows an attacker to input a specially crafted Windows     Registry (hive) file, which would cause hivex to recursively call the _get_children() function, leading to     a stack overflow. The highest threat from this vulnerability is to system availability. (CVE-2021-3622)

  - A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption     boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before     proxying everything else a client sends to the server, potentially leading the client to terminate the NBD     session. The highest threat from this vulnerability is to system availability. (CVE-2021-3716)

  - A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the     descriptor's address belongs to the non direct access region, due to num_buffers being set after the     virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a     denial of service condition, or potentially execute code on the host with the privileges of the QEMU     process. (CVE-2021-3748)

  - A NULL pointer dereference issue was found in the block mirror layer of QEMU in versions prior to 6.2.0.
    The `self` pointer is dereferenced in mirror_wait_on_conflicts() without ensuring that it's not NULL. A     malicious unprivileged user within the guest could use this flaw to crash the QEMU process on the host     when writing data reaches the threshold of mirroring node. (CVE-2021-4145)

  - A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while     processing read/write ioport commands if the selected floppy drive is not initialized with a block device.
    This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of     service. The highest threat from this vulnerability is to system availability. (CVE-2021-20196)

  - In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS attribute is supplied to the function     ntfs_get_attribute_value, a heap buffer overflow can occur allowing for memory disclosure or denial of     service. The vulnerability is caused by an out-of-bound buffer access which can be triggered by mounting a     crafted ntfs partition. The root cause is a missing consistency check after reading an MFT record : the     bytes_in_use field should be less than the bytes_allocated field. When it is not, the parsing of the     records proceeds into the wild. (CVE-2021-33285)

  - In NTFS-3G versions < 2021.8.22, when a specially crafted unicode string is supplied in an NTFS image a     heap buffer overflow can occur and allow for code execution. (CVE-2021-33286)

  - In NTFS-3G versions < 2021.8.22, when specially crafted NTFS attributes are read in the function     ntfs_attr_pread_i, a heap buffer overflow can occur and allow for writing to arbitrary memory or denial of     service of the application. (CVE-2021-33287)

  - In NTFS-3G versions < 2021.8.22, when a specially crafted MFT section is supplied in an NTFS image a heap     buffer overflow can occur and allow for code execution. (CVE-2021-33289)

  - In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS inode pathname is supplied in an NTFS image     a heap buffer overflow can occur resulting in memory disclosure, denial of service and even code     execution. (CVE-2021-35266)

  - NTFS-3G versions < 2021.8.22, a stack buffer overflow can occur when correcting differences in the MFT and     MFTMirror allowing for code execution or escalation of privileges when setuid-root. (CVE-2021-35267)

  - In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS inode is loaded in the function     ntfs_inode_real_open, a heap buffer overflow can occur allowing for code execution and escalation of     privileges. (CVE-2021-35268)

  - NTFS-3G versions < 2021.8.22, when a specially crafted NTFS attribute from the MFT is setup in the     function ntfs_attr_setup_flag, a heap buffer overflow can occur allowing for code execution and escalation     of privileges. (CVE-2021-35269)

  - A crafted NTFS image can cause a NULL pointer dereference in ntfs_extent_inode_open in NTFS-3G <     2021.8.22. (CVE-2021-39251)

  - A crafted NTFS image can cause an out-of-bounds read in ntfs_ie_lookup in NTFS-3G < 2021.8.22.
    (CVE-2021-39252)

  - A crafted NTFS image can cause an out-of-bounds read in ntfs_runlists_merge_i in NTFS-3G < 2021.8.22.
    (CVE-2021-39253)

  - A crafted NTFS image can cause an integer overflow in memmove, leading to a heap-based buffer overflow in     the function ntfs_attr_record_resize, in NTFS-3G < 2021.8.22. (CVE-2021-39254)

  - A crafted NTFS image can trigger an out-of-bounds read, caused by an invalid attribute in     ntfs_attr_find_in_attrdef, in NTFS-3G < 2021.8.22. (CVE-2021-39255)

  - A crafted NTFS image can cause a heap-based buffer overflow in ntfs_inode_lookup_by_name in NTFS-3G <     2021.8.22. (CVE-2021-39256)

  - A crafted NTFS image with an unallocated bitmap can lead to a endless recursive function call chain     (starting from ntfs_attr_pwrite), causing stack consumption in NTFS-3G < 2021.8.22. (CVE-2021-39257)

  - A crafted NTFS image can cause out-of-bounds reads in ntfs_attr_find and ntfs_external_attr_find in     NTFS-3G < 2021.8.22. (CVE-2021-39258)

  - A crafted NTFS image can trigger an out-of-bounds access, caused by an unsanitized attribute length in     ntfs_inode_lookup_by_name, in NTFS-3G < 2021.8.22. (CVE-2021-39259)

  - A crafted NTFS image can cause an out-of-bounds access in ntfs_inode_sync_standard_information in NTFS-3G     < 2021.8.22. (CVE-2021-39260)

  - A crafted NTFS image can cause a heap-based buffer overflow in ntfs_compressed_pwrite in NTFS-3G <     2021.8.22. (CVE-2021-39261)

  - A crafted NTFS image can cause an out-of-bounds access in ntfs_decompress in NTFS-3G < 2021.8.22.
    (CVE-2021-39262)

  - A crafted NTFS image can trigger a heap-based buffer overflow, caused by an unsanitized attribute in     ntfs_get_attribute_value, in NTFS-3G < 2021.8.22. (CVE-2021-39263)

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-2022:1759 advisory.

  - hivex: stack overflow due to recursive call of _get_children() (CVE-2021-3622)

  - nbdkit: NBD_OPT_STRUCTURED_REPLY injection on STARTTLS (CVE-2021-3716)

  - QEMU: virtio-net: heap use-after-free in virtio_net_receive_rcu (CVE-2021-3748)

  - libvirt: segmentation fault during VM shutdown can lead to vdsm hang (CVE-2021-3975)

  - QEMU: NULL pointer dereference in mirror_wait_on_conflicts() in block/mirror.c (CVE-2021-4145)

  - QEMU: NULL pointer dereference in pci_write() in hw/acpi/pcihp.c (CVE-2021-4158)

  - QEMU: block: fdc: null pointer dereference may lead to guest crash (CVE-2021-20196)

  - ntfs-3g: Out-of-bounds heap buffer access in ntfs_get_attribute_value() due to incorrect check of     bytes_in_use value in MFT records (CVE-2021-33285)

  - ntfs-3g: Heap buffer overflow triggered by a specially crafted Unicode string (CVE-2021-33286)

  - ntfs-3g: Heap buffer overflow in ntfs_attr_pread_i() triggered by specially crafted NTFS attributes     (CVE-2021-33287)

  - ntfs-3g: Heap buffer overflow triggered by a specially crafted MFT section (CVE-2021-33289)

  - ntfs-3g: Heap buffer overflow triggered by a specially crafted NTFS inode pathname (CVE-2021-35266)

  - ntfs-3g: Stack buffer overflow triggered when correcting differences between MFT and MFTMirror sections     (CVE-2021-35267)

  - ntfs-3g: Heap buffer overflow in ntfs_inode_real_open() triggered by a specially crafted NTFS inode     (CVE-2021-35268)

  - ntfs-3g: Heap buffer overflow in ntfs_attr_setup_flag() triggered by a specially crafted NTFS attribute     from MFT (CVE-2021-35269)

  - ntfs-3g: NULL pointer dereference in ntfs_extent_inode_open() (CVE-2021-39251)

  - ntfs-3g: Out-of-bounds read in ntfs_ie_lookup() (CVE-2021-39252)

  - ntfs-3g: Out-of-bounds read in ntfs_runlists_merge_i() (CVE-2021-39253)

  - ntfs-3g: Integer overflow in memmove() leading to heap buffer overflow in ntfs_attr_record_resize()     (CVE-2021-39254)

  - ntfs-3g: Out-of-bounds read ntfs_attr_find_in_attrdef() triggered by an invalid attribute (CVE-2021-39255)

  - ntfs-3g: Heap buffer overflow in ntfs_inode_lookup_by_name() (CVE-2021-39256)

  - ntfs-3g: Endless recursion from ntfs_attr_pwrite() triggered by an unallocated bitmap (CVE-2021-39257)

  - ntfs-3g: Out-of-bounds reads in ntfs_attr_find() and ntfs_external_attr_find() (CVE-2021-39258)

  - ntfs-3g: Out-of-bounds access in ntfs_inode_lookup_by_name() caused by an unsanitized attribute length     (CVE-2021-39259)

  - ntfs-3g: Out-of-bounds access in ntfs_inode_sync_standard_information() (CVE-2021-39260)

  - ntfs-3g: Heap buffer overflow in ntfs_compressed_pwrite() (CVE-2021-39261)

  - ntfs-3g: Out-of-bounds access in ntfs_decompress() (CVE-2021-39262)

  - ntfs-3g: Heap buffer overflow in ntfs_get_attribute_value() caused by an unsanitized attribute     (CVE-2021-39263)

  - libnbd: nbdcopy: missing error handling may create corrupted destination image (CVE-2022-0485)

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-2022:1759 advisory.

  - QEMU: block: fdc: null pointer dereference may lead to guest crash (CVE-2021-20196)

  - ntfs-3g: Out-of-bounds heap buffer access in ntfs_get_attribute_value() due to incorrect check of     bytes_in_use value in MFT records (CVE-2021-33285)

  - ntfs-3g: Heap buffer overflow triggered by a specially crafted Unicode string (CVE-2021-33286)

  - ntfs-3g: Heap buffer overflow in ntfs_attr_pread_i() triggered by specially crafted NTFS attributes     (CVE-2021-33287)

  - ntfs-3g: Heap buffer overflow triggered by a specially crafted MFT section (CVE-2021-33289)

  - ntfs-3g: Heap buffer overflow triggered by a specially crafted NTFS inode pathname (CVE-2021-35266)

  - ntfs-3g: Stack buffer overflow triggered when correcting differences between MFT and MFTMirror sections     (CVE-2021-35267)

  - ntfs-3g: Heap buffer overflow in ntfs_inode_real_open() triggered by a specially crafted NTFS inode     (CVE-2021-35268)

  - ntfs-3g: Heap buffer overflow in ntfs_attr_setup_flag() triggered by a specially crafted NTFS attribute     from MFT (CVE-2021-35269)

  - hivex: stack overflow due to recursive call of _get_children() (CVE-2021-3622)

  - nbdkit: NBD_OPT_STRUCTURED_REPLY injection on STARTTLS (CVE-2021-3716)

  - QEMU: virtio-net: heap use-after-free in virtio_net_receive_rcu (CVE-2021-3748)

  - ntfs-3g: NULL pointer dereference in ntfs_extent_inode_open() (CVE-2021-39251)

  - ntfs-3g: Out-of-bounds read in ntfs_ie_lookup() (CVE-2021-39252)

  - ntfs-3g: Out-of-bounds read in ntfs_runlists_merge_i() (CVE-2021-39253)

  - ntfs-3g: Integer overflow in memmove() leading to heap buffer overflow in ntfs_attr_record_resize()     (CVE-2021-39254)

  - ntfs-3g: Out-of-bounds read ntfs_attr_find_in_attrdef() triggered by an invalid attribute (CVE-2021-39255)

  - ntfs-3g: Heap buffer overflow in ntfs_inode_lookup_by_name() (CVE-2021-39256)

  - ntfs-3g: Endless recursion from ntfs_attr_pwrite() triggered by an unallocated bitmap (CVE-2021-39257)

  - ntfs-3g: Out-of-bounds reads in ntfs_attr_find() and ntfs_external_attr_find() (CVE-2021-39258)

  - ntfs-3g: Out-of-bounds access in ntfs_inode_lookup_by_name() caused by an unsanitized attribute length     (CVE-2021-39259)

  - ntfs-3g: Out-of-bounds access in ntfs_inode_sync_standard_information() (CVE-2021-39260)

  - ntfs-3g: Heap buffer overflow in ntfs_compressed_pwrite() (CVE-2021-39261)

  - ntfs-3g: Out-of-bounds access in ntfs_decompress() (CVE-2021-39262)

  - ntfs-3g: Heap buffer overflow in ntfs_get_attribute_value() caused by an unsanitized attribute     (CVE-2021-39263)

  - libvirt: segmentation fault during VM shutdown can lead to vdsm hang (CVE-2021-3975)

  - QEMU: NULL pointer dereference in mirror_wait_on_conflicts() in block/mirror.c (CVE-2021-4145)

  - QEMU: NULL pointer dereference in pci_write() in hw/acpi/pcihp.c (CVE-2021-4158)

  - libnbd: nbdcopy: missing error handling may create corrupted destination image (CVE-2022-0485)

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

The remote Ubuntu 18.04 LTS / 20.04 LTS / 21.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5399-1 advisory.

  - A double free memory issue was found to occur in the libvirt API, in versions before 6.8.0, responsible     for requesting information about network interfaces of a running QEMU domain. This flaw affects the polkit     access control driver. Specifically, clients connecting to the read-write socket with limited ACL     permissions could use this flaw to crash the libvirt daemon, resulting in a denial of service, or     potentially escalate their privileges on the system. The highest threat from this vulnerability is to data     confidentiality and integrity as well as system availability. (CVE-2020-25637)

  - 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 improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in     the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly     released on ACL permission failure. Clients connecting to the read-write socket with limited ACL     permissions could use this flaw to acquire the lock and prevent other users from accessing storage     pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability     is to system availability. (CVE-2021-3667)

  - A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause     libvirtd on the host to deadlock or crash, resulting in a denial of service condition. (CVE-2021-4147)

  - A flaw was found in the libvirt nwfilter driver. The virNWFilterObjListNumOfNWFilters method failed to     acquire the `driver->nwfilters` mutex before iterating over virNWFilterObj instances. There was no     protection to stop another thread from concurrently modifying the `driver->nwfilters` object. This flaw     allows a malicious, unprivileged user to exploit this issue via libvirt's API virConnectNumOfNWFilters to     crash the network filter management daemon (libvirtd/virtnwfilterd). (CVE-2022-0897)

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 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:0045-2 advisory.

  - A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in     qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a     monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is     shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial     of service attack by causing the libvirt daemon to crash. (CVE-2021-3975)

  - A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause     libvirtd on the host to deadlock or crash, resulting in a denial of service condition. (CVE-2021-4147)

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-2022:0128-1 advisory.

  - A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in     qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a     monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is     shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial     of service attack by causing the libvirt daemon to crash. (CVE-2021-3975)

  - A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause     libvirtd on the host to deadlock or crash, resulting in a denial of service condition. (CVE-2021-4147)

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-2022:0045-1 advisory.

  - A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in     qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a     monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is     shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial     of service attack by causing the libvirt daemon to crash. (CVE-2021-3975)

  - A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause     libvirtd on the host to deadlock or crash, resulting in a denial of service condition. (CVE-2021-4147)

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 SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:0042-1 advisory.

  - A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in     qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a     monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is     shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial     of service attack by causing the libvirt daemon to crash. (CVE-2021-3975)

  - A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause     libvirtd on the host to deadlock or crash, resulting in a denial of service condition. (CVE-2021-4147)

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 SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:0041-1 advisory.

  - A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in     qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a     monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is     shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial     of service attack by causing the libvirt daemon to crash. (CVE-2021-3975)

  - A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause     libvirtd on the host to deadlock or crash, resulting in a denial of service condition. (CVE-2021-4147)

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 SLED12 / SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:0032-1 advisory.

  - A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in     qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a     monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is     shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial     of service attack by causing the libvirt daemon to crash. (CVE-2021-3975)

  - A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause     libvirtd on the host to deadlock or crash, resulting in a denial of service condition. (CVE-2021-4147)

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-2022:0031-1 advisory.

  - A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in     qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a     monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is     shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial     of service attack by causing the libvirt daemon to crash. (CVE-2021-3975)

  - A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause     libvirtd on the host to deadlock or crash, resulting in a denial of service condition. (CVE-2021-4147)

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
192736	Debian dla-3778 : libnss-libvirt - security update	Nessus	Debian Local Security Checks	medium
184718	Rocky Linux 8 : virt:rhel and virt-devel:rhel (RLSA-2022:1759)	Nessus	Rocky Linux Local Security Checks	high
178884	EulerOS Virtualization 3.0.6.6 : libvirt (EulerOS-SA-2023-2445)	Nessus	Huawei Local Security Checks	medium
177153	EulerOS Virtualization 3.0.6.0 : libvirt (EulerOS-SA-2023-2256)	Nessus	Huawei Local Security Checks	medium
176803	EulerOS Virtualization 2.11.1 : libvirt (EulerOS-SA-2023-2081)	Nessus	Huawei Local Security Checks	medium
176800	EulerOS Virtualization 2.11.0 : libvirt (EulerOS-SA-2023-2133)	Nessus	Huawei Local Security Checks	medium
175205	EulerOS Virtualization 3.0.2.0 : libvirt (EulerOS-SA-2023-1687)	Nessus	Huawei Local Security Checks	medium
169341	EulerOS Virtualization 2.10.0 : libvirt (EulerOS-SA-2022-2881)	Nessus	Huawei Local Security Checks	medium
169332	EulerOS Virtualization 2.10.1 : libvirt (EulerOS-SA-2022-2899)	Nessus	Huawei Local Security Checks	medium
163928	Oracle Linux 8 : virt:kvm_utils (ELSA-2022-9700)	Nessus	Oracle Linux Local Security Checks	high
163668	Oracle Linux 7 : libvirt / libvirt-python (ELSA-2022-9668)	Nessus	Oracle Linux Local Security Checks	medium
161302	Oracle Linux 8 : virt:ol / and / virt-devel:ol (ELSA-2022-1759)	Nessus	Oracle Linux Local Security Checks	high
161144	AlmaLinux 8 : virt:rhel and virt-devel:rhel (ALSA-2022:1759)	Nessus	Alma Linux Local Security Checks	high
161052	RHEL 8 : virt:rhel and virt-devel:rhel (RHSA-2022:1759)	Nessus	Red Hat Local Security Checks	high
160913	CentOS 8 : virt:rhel and virt-devel:rhel (CESA-2022:1759)	Nessus	CentOS Local Security Checks	high
160444	Ubuntu 18.04 LTS / 20.04 LTS : libvirt vulnerabilities (USN-5399-1)	Nessus	Ubuntu Local Security Checks	medium
158146	SUSE SLES15 Security Update : libvirt (SUSE-SU-2022:0045-2)	Nessus	SuSE Local Security Checks	medium
156881	SUSE SLES15 Security Update : libvirt (SUSE-SU-2022:0128-1)	Nessus	SuSE Local Security Checks	medium
156634	SUSE SLES15 Security Update : libvirt (SUSE-SU-2022:0045-1)	Nessus	SuSE Local Security Checks	medium
156615	SUSE SLES12 Security Update : libvirt (SUSE-SU-2022:0042-1)	Nessus	SuSE Local Security Checks	medium
156607	SUSE SLES12 Security Update : libvirt (SUSE-SU-2022:0041-1)	Nessus	SuSE Local Security Checks	medium
156479	SUSE SLED12 / SLES12 Security Update : libvirt (SUSE-SU-2022:0032-1)	Nessus	SuSE Local Security Checks	medium
156475	SUSE SLES15 Security Update : libvirt (SUSE-SU-2022:0031-1)	Nessus	SuSE Local Security Checks	medium

Detections

Analytics

CVE-2021-3975

medium

Tenable Plugins

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