CVSS: 7.8EPSS: 0%CPEs: 31EXPL: 0CVE-2016-5126 – Qemu: block: iscsi: buffer overflow in iscsi_aio_ioctl
https://notcve.org/view.php?id=CVE-2016-5126
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: 4.9EPSS: 0%CPEs: 5EXPL: 0CVE-2016-4453
https://notcve.org/view.php?id=CVE-2016-4453
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: 6.7EPSS: 0%CPEs: 5EXPL: 0CVE-2016-4439
https://notcve.org/view.php?id=CVE-2016-4439
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: 0CVE-2016-4441
https://notcve.org/view.php?id=CVE-2016-4441
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 •
CVSS: 6.5EPSS: 0%CPEs: 26EXPL: 0CVE-2016-4020 – Qemu: i386: leakage of stack memory to guest in kvmvapic.c
https://notcve.org/view.php?id=CVE-2016-4020
The patch_instruction function in hw/i386/kvmvapic.c in QEMU does not initialize the imm32 variable, which allows local guest OS administrators to obtain sensitive information from host stack memory by accessing the Task Priority Register (TPR). La función patch_instruction en hw/i386/kvmvapic.c en QEMU no inicializa la variable imm32, lo que permite a administradores locales del SO invitado obtener información sensible de la memoria de pila del anfitrión accediendo al Task Priority Register (TPR). An information-exposure flaw was found in Quick Emulator (QEMU) in Task Priority Register (TPR) optimizations for 32-bit Windows guests. The flaw could occur while accessing TPR. A privileged user inside a guest could use this issue to read portions of the host memory. • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=691a02e2ce0c413236a78dee6f2651c937b09fb0 http://www.securityfocus.com/bid/86067 http://www.ubuntu.com/usn/USN-2974-1 https://access.redhat.com/errata/RHSA-2017:1856 https://access.redhat.com/errata/RHSA-2017:2392 https://access.redhat.com/errata/RHSA-2017:2408 https://bugzilla.redhat.com/show_bug.cgi?id=1313686 https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html https://lists.gnu.org/archive/html/qemu-devel/2016& • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •