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CVSS: 6.9EPSS: 0%CPEs: 51EXPL: 1

The pit_ioport_read in i8254.c in the Linux kernel before 2.6.33 and QEMU before 2.3.1 does not distinguish between read lengths and write lengths, which might allow guest OS users to execute arbitrary code on the host OS by triggering use of an invalid index. Vulnerabilidad en pit_ioport_read en i8254.c en el kernel de Linux en versiones anteriores a 2.6.33 y en QEMU en versiones anteriores a 2.3.1, no distingue entre longitudes de lectura y longitudes de escritura, lo que podría permitir a los usuarios invitados del SO ejecutar código arbitrario en el host del SO desencadenando el uso de un índice no válido. An out-of-bounds memory access flaw, leading to memory corruption or possibly an information leak, was found in QEMU's pit_ioport_read() function. A privileged guest user in a QEMU guest, which had QEMU PIT emulation enabled, could potentially, in rare cases, use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process. • https://www.exploit-db.com/exploits/37990 http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ee73f656a604d5aa9df86a97102e4e462dd79924 http://mirror.linux.org.au/linux/kernel/v2.6/ChangeLog-2.6.33 http://rhn.redhat.com/errata/RHSA-2015-1507.html http://rhn.redhat.com/errata/RHSA-2015-1508.html http://rhn.redhat.com/errata/RHSA-2015-1512.html http://www.debian.org/security/2015/dsa-3348 http://www.openwall.com/lists/oss-security/2015/06/25/7 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 7.5EPSS: 7%CPEs: 36EXPL: 0

Heap-based buffer overflow in the PCNET controller in QEMU allows remote attackers to execute arbitrary code by sending a packet with TXSTATUS_STARTPACKET set and then a crafted packet with TXSTATUS_DEVICEOWNS set. Desbordamiento de buffer basado en memoria dinámica en el controlador PCNET en QEMU permite a atacantes remotos ejecutar código arbitrario mediante el envío de un paquete con el juego TXSTATUS_STARTPACKET y posteriormente un paquete manipulado con el juego TXSTATUS_DEVICEOWNS. A flaw was found in the way QEMU's AMD PCnet Ethernet emulation handled multi-TMD packets with a length above 4096 bytes. A privileged guest user in a guest with an AMD PCNet ethernet card enabled could potentially use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process. • http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10698 http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160669.html http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160677.html http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160685.html http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html http://lists.opensuse.org/opensuse-security-announce/2015-06&# • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •

CVSS: 7.7EPSS: 0%CPEs: 10EXPL: 1

The Floppy Disk Controller (FDC) in QEMU, as used in Xen 4.5.x and earlier and KVM, allows local guest users to cause a denial of service (out-of-bounds write and guest crash) or possibly execute arbitrary code via the (1) FD_CMD_READ_ID, (2) FD_CMD_DRIVE_SPECIFICATION_COMMAND, or other unspecified commands, aka VENOM. Floppy Disk Controller (FDC) en QEMU, utilizado en Xen 4.5.x y anteriores y KVM, permite a usuarios locales invitados causar una denegación de servicio (escritura fuera de rango y caída del invitado) o posiblemente ejecutar código arbitrario a través de (1) FD_CMD_READ_ID, (2) FD_CMD_DRIVE_SPECIFICATION_COMMAND, u otros comandos sin especificar, también conocido como VENOM. An out-of-bounds memory access flaw was found in the way QEMU's virtual Floppy Disk Controller (FDC) handled FIFO buffer access while processing certain FDC commands. A privileged guest user could use this flaw to crash the guest or, potentially, execute arbitrary code on the host with the privileges of the host's QEMU process corresponding to the guest. • https://www.exploit-db.com/exploits/37053 http://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=e907746266721f305d67bc0718795fedee2e824c http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10693 http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158072.html http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00009.html http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00013.html http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00014.html http:/&#x • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 3.5EPSS: 0%CPEs: 1EXPL: 0

Red Hat Enterprise Virtualization (RHEV) Manager before 3.5.1 uses weak permissions on the directories shared by the ovirt-engine-dwhd service and a plugin during service startup, which allows local users to obtain sensitive information by reading files in the directory. Red Hat Enterprise Virtualization (RHEV) Manager anterior a 3.5.1 utiliza permisos débiles en los directorios compartidos por el servicio ovirt-engine-dwhd y un plugin durante el inicio del servicio, lo que permite a usuarios locales obtener información sensible mediante la lectura de ficheros en el directorio. It was discovered that a directory shared between the ovirt-engine-dwhd service and a plug-in used during the service's startup had incorrect permissions. A local user could use this flaw to access files in this directory, which could potentially contain sensitive information. • http://rhn.redhat.com/errata/RHSA-2015-0888.html http://www.securitytracker.com/id/1032231 https://access.redhat.com/security/cve/CVE-2015-0257 https://bugzilla.redhat.com/show_bug.cgi?id=1189085 • CWE-264: Permissions, Privileges, and Access Controls CWE-732: Incorrect Permission Assignment for Critical Resource •

CVSS: 6.8EPSS: 0%CPEs: 1EXPL: 0

Red Hat Enterprise Virtualization (RHEV) Manager before 3.5.1 ignores the permission to deny snapshot creation during live storage migration between domains, which allows remote authenticated users to cause a denial of service (prevent host start) by creating a long snapshot chain. Red Hat Enterprise Virtualization (RHEV) Manager anterior a 3.5.1 ignora el permiso para denegar la creación de instantáneas durante la migración del almacenaje en vivo entre dominios, lo que permite a usuarios remotos autenticados causar una denegación de servicio (impedir el inicio del anfitrión) mediante la creación de una cadena larga de instantáneas. It was discovered that the permissions to allow or deny snapshot creation were ignored during live storage migration of a VM's disk between storage domains. An attacker able to live migrate a disk between storage domains could use this flaw to cause a denial of service. • http://rhn.redhat.com/errata/RHSA-2015-0888.html http://www.securitytracker.com/id/1032231 https://access.redhat.com/security/cve/CVE-2015-0237 https://bugzilla.redhat.com/show_bug.cgi?id=1184716 • CWE-264: Permissions, Privileges, and Access Controls CWE-732: Incorrect Permission Assignment for Critical Resource •