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CVSS: 4.9EPSS: 0%CPEs: 5EXPL: 0

The vmsvga_fifo_run function in hw/display/vmware_vga.c in QEMU allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a VGA command. La función vmsvga_fifo_run en hw/display/vmware_vga.c en QEMU permite a administradores locales del SO invitado provocar una denegación de servicio (bucle infinito y caída de proceso QEMU) a través de un comando VGA. • http://www.openwall.com/lists/oss-security/2016/05/30/2 http://www.securityfocus.com/bid/90928 http://www.ubuntu.com/usn/USN-3047-1 http://www.ubuntu.com/usn/USN-3047-2 https://bugzilla.redhat.com/show_bug.cgi?id=1336650 https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg05270.html https://security.gentoo.org/glsa/201609-01 • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •

CVSS: 6.0EPSS: 0%CPEs: 5EXPL: 0

The vmsvga_fifo_read_raw function in hw/display/vmware_vga.c in QEMU allows local guest OS administrators to obtain sensitive host memory information or cause a denial of service (QEMU process crash) by changing FIFO registers and issuing a VGA command, which triggers an out-of-bounds read. La función vmsvga_fifo_read_raw en hw/display/vmware_vga.c en QEMU permite a administradores locales del SO invitado obtener información sensible de la memoria del anfitrión o provocar una denegación de servicio (caída del proceso QEMU) cambiando registros FIFO y emitiendo un comando VGA, lo que desencadena una lectura fuera de rango. • http://www.openwall.com/lists/oss-security/2016/05/30/3 http://www.securityfocus.com/bid/90927 http://www.ubuntu.com/usn/USN-3047-1 http://www.ubuntu.com/usn/USN-3047-2 https://bugzilla.redhat.com/show_bug.cgi?id=1336429 https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg05271.html https://security.gentoo.org/glsa/201609-01 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 7.8EPSS: 0%CPEs: 31EXPL: 0

Heap-based buffer overflow in the iscsi_aio_ioctl function in block/iscsi.c in QEMU allows local guest OS users to cause a denial of service (QEMU process crash) or possibly execute arbitrary code via a crafted iSCSI asynchronous I/O ioctl call. Desbordamiento de buffer basado en memoria dinámica en la función iscsi_aio_ioctl en block/iscsi.c en QEMU permite a usuarios locales del SO invitado provocar una denegación de servicio (caída del proceso QEMU) o posiblemente ejecutar código arbitrario a través de una llamada iSCSI ioctl I/O asíncrona manipulada. Quick Emulator(QEMU) built with the Block driver for iSCSI images support (virtio-blk) is vulnerable to a heap-based buffer overflow issue. The flaw could occur while processing iSCSI asynchronous I/O ioctl(2) calls. A user inside a guest could exploit this flaw to crash the QEMU process resulting in denial of service, or potentially leverage it to execute arbitrary code with QEMU-process privileges on the host. • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=a6b3167fa0e825aebb5a7cd8b437b6d41584a196 http://rhn.redhat.com/errata/RHSA-2016-1606.html http://rhn.redhat.com/errata/RHSA-2016-1607.html http://rhn.redhat.com/errata/RHSA-2016-1653.html http://rhn.redhat.com/errata/RHSA-2016-1654.html http://rhn.redhat.com/errata/RHSA-2016-1655.html http://rhn.redhat.com/errata/RHSA-2016-1756.html http://rhn.redhat.com/errata/RHSA-2016-1763.html http://www.openwall.com/lists/oss-secu • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •

CVSS: 6.7EPSS: 0%CPEs: 5EXPL: 0

The esp_reg_write function in hw/scsi/esp.c in the 53C9X Fast SCSI Controller (FSC) support in QEMU does not properly check command buffer length, which allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or potentially execute arbitrary code on the QEMU host via unspecified vectors. La función esp_reg_write en hw/scsi/esp.c en el soporte 53C9X Fast SCSI Controller (FSC) en QEMU no comprueba correctamente el comando de longitud del buffer, lo que permite a los administradores de SO invitados locales provocar una denegación del servicio (escritura fuera de rango y caída del proceso QEMU) o potencialmente ejecutar código arbitrario en el anfitrión QEMU a través de vectores no especificados. • http://www.openwall.com/lists/oss-security/2016/05/19/3 http://www.securityfocus.com/bid/90760 http://www.ubuntu.com/usn/USN-3047-1 http://www.ubuntu.com/usn/USN-3047-2 https://bugzilla.redhat.com/show_bug.cgi?id=1337502 https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg03273.html https://security.gentoo.org/glsa/201609-01 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 6.0EPSS: 0%CPEs: 5EXPL: 0

The get_cmd function in hw/scsi/esp.c in the 53C9X Fast SCSI Controller (FSC) support in QEMU does not properly check DMA length, which allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) via unspecified vectors, involving an SCSI command. La función get_cmd en hw/scsi/esp.c en el soporte 53C9X Fast SCSI Controller (FSC) en QEMU no comprueba correctamente la extensión DMA, lo que permite a administradores locales invitados del sistema operativo provocar una denegación del servicio (escritura fuera de rango y caída del proceso QEMU) a través de vectores no especificados, involucrando un comando SCSI. • http://www.openwall.com/lists/oss-security/2016/05/19/4 http://www.securityfocus.com/bid/90762 http://www.ubuntu.com/usn/USN-3047-1 http://www.ubuntu.com/usn/USN-3047-2 https://bugzilla.redhat.com/show_bug.cgi?id=1337505 https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg03274.html https://security.gentoo.org/glsa/201609-01 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •