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CVSS: 9.8EPSS: 0%CPEs: 33EXPL: 0

05 Sep 2012 — Qemu, as used in Xen 4.0, 4.1 and possibly other products, when emulating certain devices with a virtual console backend, allows local OS guest users to gain privileges via a crafted escape VT100 sequence that triggers the overwrite of a "device model's address space." Qemu, tal como se utiliza en Xen v4.0, v4.1 y posiblemente otros productos, al emular ciertos dispositivos con una consola virtual, permite a los usuarios locales del SO invitado obtener privilegios a través de una secuencia VT100 de escape m... • http://git.qemu.org/?p=qemu-stable-0.15.git%3Ba=log • CWE-20: Improper Input Validation CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 9.8EPSS: 0%CPEs: 10EXPL: 0

07 Dec 2011 — Buffer overflow in the ccid_card_vscard_handle_message function in hw/ccid-card-passthru.c in QEMU before 0.15.2 and 1.x before 1.0-rc4 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted VSC_ATR message. Desbordamiento de buffer en la función ccid_card_vscard_handle_message en hw/ccid-card-passthru.c en QEMU anterior a 0.15.2 y 1.x anterior a 1.0-rc4 permite a atacantes remotos causar una denegación de servicio (caída) y posiblemente ejecutar códig... • http://git.qemu.org/?p=qemu-stable-0.15.git%3Ba=log • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 2

25 Oct 2011 — Buffer overflow in hw/scsi-disk.c in the SCSI subsystem in QEMU before 0.15.2, as used by Xen, might allow local guest users with permission to access the CD-ROM to cause a denial of service (guest crash) via a crafted SAI READ CAPACITY SCSI command. NOTE: this is only a vulnerability when root has manually modified certain permissions or ACLs. Desbordamiento de buffer en hw/scsi-disk.c en el subsistema SCSI en QEMU anterior a 0.15.2, utilizado por Xen, podría permitir a usuarios locales invitados con permi... • http://git.qemu.org/?p=qemu-stable-0.15.git%3Ba=log • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 6.4EPSS: 0%CPEs: 57EXPL: 0

25 Jul 2011 — The change_process_uid function in os-posix.c in Qemu 0.14.0 and earlier does not properly drop group privileges when the -runas option is used, which allows local guest users to access restricted files on the host. La función change_process_uid en os-posix.c en Qemu v0.14.0 y anteriores no "suelta" correctamente los privilegios de grupo cuando se usa la opción -runas, lo que permite acceder a archivos restringidos en el host a usuarios locales invitados. KVM is a full virtualization solution for Linux on A... • http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081972.html • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 9.8EPSS: 0%CPEs: 60EXPL: 0

05 Jul 2011 — Buffer overflow in the virtio subsystem in qemu-kvm 0.14.0 and earlier allows privileged guest users to cause a denial of service (guest crash) or gain privileges via a crafted indirect descriptor related to "virtqueue in and out requests." Desbordamiento de búfer en el subsistema de virtio en qemu-kvm v0.14.0 y anteriores permite causar una denegación de servicio u obtener privilegios a los usuarios privilegiados invitados a través de un descriptor indirecto debidamente modificado relacionado con "virtqueu... • http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00007.html • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 7.4EPSS: 0%CPEs: 74EXPL: 0

24 May 2011 — The pciej_write function in hw/acpi_piix4.c in the PIIX4 Power Management emulation in qemu-kvm does not check if a device is hotpluggable before unplugging the PCI-ISA bridge, which allows privileged guest users to cause a denial of service (guest crash) and possibly execute arbitrary code by sending a crafted value to the 0xae08 (PCI_EJ_BASE) I/O port, which leads to a use-after-free related to "active qemu timers." La función pciej_write en hw/acpi_piix4.c en la emulación de PIIX4 Power Management en qem... • http://blog.nelhage.com/2011/08/breaking-out-of-kvm • CWE-20: Improper Input Validation CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 9.8EPSS: 0%CPEs: 17EXPL: 0

15 Feb 2011 — qemu-kvm before 0.11.0 disables VNC authentication when the password is cleared, which allows remote attackers to bypass authentication and establish VNC sessions. qemu-kvm antes de v0.11.0 deshabilita la autenticación VNC cuando la contraseña es eliminada, lo que permite a atacantes remotos eludir la autenticación y establecer sesiones VNC. Neil Wilson discovered that if VNC passwords were blank in QEMU configurations, access to VNC sessions was allowed without a password instead of being disabled. A remot... • http://rhn.redhat.com/errata/RHSA-2011-0345.html • CWE-287: Improper Authentication •

CVSS: 7.8EPSS: 0%CPEs: 41EXPL: 0

12 Feb 2010 — Buffer overflow in the usb_host_handle_control function in the USB passthrough handling implementation in usb-linux.c in QEMU before 0.11.1 allows guest OS users to cause a denial of service (guest OS crash or hang) or possibly execute arbitrary code on the host OS via a crafted USB packet. Desbordamiento de búfer en la función usb_host_handle_control en la implementación del manejo a través de usb-linux.c en QEMU anterior a 0.11.1, permite a invitados del SO provocar una denegación de servicio (caída o cue... • http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=babd03fde68093482528010a5435c14ce9128e3f • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 9.9EPSS: 0%CPEs: 3EXPL: 3

23 Oct 2009 — Multiple use-after-free vulnerabilities in vnc.c in the VNC server in QEMU 0.10.6 and earlier might allow guest OS users to execute arbitrary code on the host OS by establishing a connection from a VNC client and then (1) disconnecting during data transfer, (2) sending a message using incorrect integer data types, or (3) using the Fuzzy Screen Mode protocol, related to double free vulnerabilities. Múltiples vulnerabilidades de uso anterior a la liberación en vnc.c del servidor VNC en QEMU v0.10.6 y anterior... • http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=198a0039c5 • CWE-416: Use After Free •

CVSS: 7.8EPSS: 0%CPEs: 8EXPL: 0

29 Dec 2008 — Heap-based buffer overflow in the Cirrus VGA implementation in (1) KVM before kvm-82 and (2) QEMU on Debian GNU/Linux and Ubuntu might allow local users to gain privileges by using the VNC console for a connection, aka the LGD-54XX "bitblt" heap overflow. NOTE: this issue exists because of an incorrect fix for CVE-2007-1320. Desbordamiento de búfer basado en montículo en la implementación Cirrus VGA en (1) KVM anterior a kvm-82 y (2) QEMU sobre Debian GNU/Linux y Ubuntu, podría permitir a usuarios locales o... • http://git.kernel.dk/?p=qemu.git%3Ba=commitdiff%3Bh=65d35a09979e63541afc5bfc595b9f1b1b4ae069 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •