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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: 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: 6.2EPSS: 0%CPEs: 7EXPL: 0

The read_boot function in boot.c in dosfstools before 4.0 allows attackers to cause a denial of service (crash) via a crafted filesystem, which triggers a heap-based buffer overflow in the (1) read_fat function or an out-of-bounds heap read in (2) get_fat function. La función read_boot en boot.c en dosfstools en versiones anteriores a 4.0 permite a atacantes provocar una denegación de servicio (caída) a través de un archivo de sistema manipulado, lo que desencadena un desbordamiento de buffer basado en memoria dinámica en la función (1) read_fat o una lectura de memoria fuera de los límites en la función (2) get_fat. • http://lists.opensuse.org/opensuse-updates/2016-06/msg00001.html http://lists.opensuse.org/opensuse-updates/2016-09/msg00014.html http://www.securityfocus.com/bid/90311 http://www.ubuntu.com/usn/USN-2986-1 https://blog.fuzzing-project.org/44-dosfstools-fsck.vfat-Several-invalid-memory-accesses.html https://github.com/dosfstools/dosfstools/commit/e8eff147e9da1185f9afd5b25948153a3b97cf52 https://github.com/dosfstools/dosfstools/issues/25 https://github.com/dosfstools/dosfstools/issues/26 https://lists • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 6.2EPSS: 0%CPEs: 7EXPL: 0

The set_fat function in fat.c in dosfstools before 4.0 might allow attackers to corrupt a FAT12 filesystem or cause a denial of service (invalid memory read and crash) by writing an odd number of clusters to the third to last entry on a FAT12 filesystem, which triggers an "off-by-two error." La función set_fat en fat.c en dosfstools en versiones anteriores a 4.0 podría permitir a atacantes corromper un sistema de archivos FAT12 o provocar una denegación de servicio (lectura de memoria no válida y caída) escribiendo un número impar de clusters desde la tercera a la última entrada en un sistema de archivos FAT12, lo que desencadena un "off-by-two error". • http://lists.opensuse.org/opensuse-updates/2016-06/msg00001.html http://lists.opensuse.org/opensuse-updates/2016-09/msg00014.html http://www.securityfocus.com/bid/90311 http://www.ubuntu.com/usn/USN-2986-1 https://blog.fuzzing-project.org/44-dosfstools-fsck.vfat-Several-invalid-memory-accesses.html https://github.com/dosfstools/dosfstools/commit/07908124838afcc99c577d1d3e84cef2dbd39cb7 https://github.com/dosfstools/dosfstools/issues/12 https://github.com/dosfstools/dosfstools/releases/tag/v4.0 https:&#x • CWE-189: Numeric Errors •

CVSS: 10.0EPSS: 74%CPEs: 24EXPL: 0

The OpenBlob function in blob.c in GraphicsMagick before 1.3.24 and ImageMagick allows remote attackers to execute arbitrary code via a | (pipe) character at the start of a filename. La función OpenBlob en blob.c en GraphicsMagick en versiones anteriores a 1.3.24 y ImageMagick permite a atacantes remotos ejecutar código arbitrario a través del caractér | (tubería) en el inicio del nombre de archivo. It was discovered that ImageMagick did not properly sanitize certain input before using it to invoke processes. A remote attacker could create a specially crafted image that, when processed by an application using ImageMagick or an unsuspecting user using the ImageMagick utilities, would lead to arbitrary execution of shell commands with the privileges of the user running the application. • http://git.imagemagick.org/repos/ImageMagick/commit/40639d173aa8c76b850d625c630b711fee4dcfb8 http://hg.code.sf.net/p/graphicsmagick/code/file/41876934e762/ChangeLog http://hg.code.sf.net/p/graphicsmagick/code/rev/ae3928faa858 http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00008.html http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00009.html http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00011.html http://lists.opensuse.org/opensuse-security-announce/2016-06/msg0002 • CWE-20: Improper Input Validation •