CVE-2016-8669 – Qemu: char: divide by zero error in serial_update_parameters
https://notcve.org/view.php?id=CVE-2016-8669
The serial_update_parameters function in hw/char/serial.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base. La función serial_update_parameters en hw/char/serial.c en QEMU (también conocido como Quick Emulator) permite a administradores locales del SO invitado provocar una denegación de servicio (error de división por cero y caída del proceso QEMU) a través de vectores que involucran un valor de divisor mayor que la base baud. • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=3592fe0c919cf27a81d8e9f9b4f269553418bb01 http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html http://www.openwall.com/lists/oss-security/2016/10/14/9 http://www.openwall.com/lists/oss-security/2016/10/15/5 http://www.securityfocus.com/bid/93563 https://access.redhat.com/errata/RHSA-2017:2392 https://access.redhat.com/errata/RHSA-2017:2408 https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html https:/ • CWE-369: Divide By Zero •
CVE-2016-6888 – Qemu: net: vmxnet: integer overflow in packet initialisation
https://notcve.org/view.php?id=CVE-2016-6888
Integer overflow in the net_tx_pkt_init function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (QEMU process crash) via the maximum fragmentation count, which triggers an unchecked multiplication and NULL pointer dereference. Desbordamiento de entero en la función net_tx_pkt_enit en hw/net/net_tx_pkt.c en QEMU (también conocido como Quick Emulator) permite a administradores locales del SO invitado provocar una denegación de servicio (caída del proceso QEMU) a través del conteo máximo de fragmentación, lo que desencadena una multiplicación no comprobada y referencia a un puntero NULL. • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=47882fa4975bf0b58dd74474329fdd7154e8f04c http://www.openwall.com/lists/oss-security/2016/08/19/10 http://www.openwall.com/lists/oss-security/2016/08/19/6 http://www.securityfocus.com/bid/92556 https://access.redhat.com/errata/RHSA-2017:2392 https://access.redhat.com/errata/RHSA-2017:2408 https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg03176.html https • CWE-190: Integer Overflow or Wraparound CWE-476: NULL Pointer Dereference •
CVE-2016-3822
https://notcve.org/view.php?id=CVE-2016-3822
exif.c in Matthias Wandel jhead 2.87, as used in libjhead in Android 4.x before 4.4.4, 5.0.x before 5.0.2, 5.1.x before 5.1.1, and 6.x before 2016-08-01, allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds access) via crafted EXIF data, aka internal bug 28868315. " exif.c en Matthias Wandel jhead 2.87, como se usa en libjhead en Android 4.x en versiones anteriores a 4.4.4, 5.0.x en versiones anteriores a 5.0.2, 5.1.x en versiones anteriores a 5.1.1 y 6.x en versiones anteriores a 2016-08-01, permite a atacantes remotos ejecutar código arbitrario o provocar una denegación de servicio (acceso fuera de rango) a través de datos EXIF manipulados, también conocido como error interno 28868315." • http://source.android.com/security/bulletin/2016-08-01.html http://www.debian.org/security/2017/dsa-3825 http://www.securityfocus.com/bid/92226 https://android.googlesource.com/platform/external/jhead/+/bae671597d47b9e5955c4cb742e468cebfd7ca6b • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVE-2016-3062
https://notcve.org/view.php?id=CVE-2016-3062
The mov_read_dref function in libavformat/mov.c in Libav before 11.7 and FFmpeg before 0.11 allows remote attackers to cause a denial of service (memory corruption) or execute arbitrary code via the entries value in a dref box in an MP4 file. La función mov_read_dref en libavformat/mov.c en Libav en versiones anteriores a 11.7 y FFmpeg en versiones anteriores a 0.11 permite a atacantes remotos provocar una denegación de srevicio (corrupción de memoria) o ejecutar código arbitrario a través de valores de entrada en una caja dref en un archivo MP4. • http://lists.opensuse.org/opensuse-updates/2016-06/msg00105.html http://www.debian.org/security/2016/dsa-3603 https://bugzilla.libav.org/show_bug.cgi?id=929 https://ffmpeg.org/security.html https://git.libav.org/?p=libav.git%3Ba=commit%3Bh=7e01d48cfd168c3dfc663f03a3b6a98e0ecba328 https://github.com/FFmpeg/FFmpeg/commit/689e59b7ffed34eba6159dcc78e87133862e3746 https://libav.org/releases/libav-11.7.changelog https://security.gentoo.org/glsa/201705-08 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVE-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 •