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CVSS: 8.8EPSS: 0%CPEs: 47EXPL: 0

09 May 2016 — The VGA module in QEMU improperly performs bounds checking on banked access to video memory, which allows local guest OS administrators to execute arbitrary code on the host by changing access modes after setting the bank register, aka the "Dark Portal" issue. El módulo VGA en QEMU lleva a cabo incorrectamente comprobaciones de límites sobre acceso almacenado a la memoria de vídeo, lo que permite a administradores locales de SO invitado ejecutar código arbitrario sobre el anfitrión cambiando los modos de ac... • http://rhn.redhat.com/errata/RHSA-2016-0724.html • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 9.8EPSS: 6%CPEs: 9EXPL: 0

26 Apr 2016 — Buffer overflow in the mipsnet_receive function in hw/net/mipsnet.c in QEMU, when the guest NIC is configured to accept large packets, allows remote attackers to cause a denial of service (memory corruption and QEMU crash) or possibly execute arbitrary code via a packet larger than 1514 bytes. Desbordamiento de buffer en la función mipsnet_receive en hw/net/mipsnet.c en QEMU, cuando el NIC invitado se configura para aceptar paquetes grandes, permite a atacantes remotos provocar una denegación de servicio (c... • http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183275.html • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •

CVSS: 8.4EPSS: 0%CPEs: 35EXPL: 0

08 Apr 2016 — The net_checksum_calculate function in net/checksum.c in QEMU allows local guest OS users to cause a denial of service (out-of-bounds heap read and crash) via the payload length in a crafted packet. La función net_checksum_calculate en net/checksum.c en QEMU permite a usuarios del SO invitado provocar una denegación de servicio (lectura de memoria dinámica fuera de rango y caída) a través de una longitud de la carga útil en un paquete manipulado. An out-of-bounds read-access flaw was found in the QEMU emula... • http://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=362786f14a753d8a5256ef97d7c10ed576d6572b • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-125: Out-of-bounds Read •

CVSS: 6.5EPSS: 0%CPEs: 6EXPL: 0

04 Apr 2016 — QEMU, when built with the Pseudo Random Number Generator (PRNG) back-end support, allows local guest OS users to cause a denial of service (process crash) via an entropy request, which triggers arbitrary stack based allocation and memory corruption. QEMU, cuando está construido con el soporte back-end Pseudo Random Number Generator (PRNG), permite a usuarios locales del SO invitado provocar una denegación de servicio (caída del proceso) a través una petición de entropía, lo que desencadena una asignación ar... • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=60253ed1e6ec6d8e5ef2efe7bf755f475dce9956 • CWE-331: Insufficient Entropy •

CVSS: 7.1EPSS: 0%CPEs: 1EXPL: 0

04 Apr 2016 — Multiple integer overflows in the USB Net device emulator (hw/usb/dev-network.c) in QEMU before 2.5.1 allow local guest OS administrators to cause a denial of service (QEMU process crash) or obtain sensitive host memory information via a remote NDIS control message packet that is mishandled in the (1) rndis_query_response, (2) rndis_set_response, or (3) usb_net_handle_dataout function. Múltiples vulnerabilidades de desbordamiento de entero en el dispositivo de emulación USB Net (hw/usb/dev-network.c) en QEM... • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=fe3c546c5ff2a6210f9a4d8561cc64051ca8603e • CWE-189: Numeric Errors •

CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0

04 Feb 2016 — QEMU (aka Quick Emulator) built with the Rocker switch emulation support is vulnerable to an off-by-one error. It happens while processing transmit (tx) descriptors in 'tx_consume' routine, if a descriptor was to have more than allowed (ROCKER_TX_FRAGS_MAX=16) fragments. A privileged user inside guest could use this flaw to cause memory leakage on the host or crash the QEMU process instance resulting in DoS issue. QEMU (también conocido como Quick Emulator) construido con el soporte de emulación switch Rock... • http://www.openwall.com/lists/oss-security/2015/12/28/6 • CWE-193: Off-by-one Error •

CVSS: 6.0EPSS: 0%CPEs: 1EXPL: 0

03 Feb 2016 — The MSI-X MMIO support in hw/pci/msix.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by leveraging failure to define the .write method. La compatibilidad MSI-X MMIO en hw/pci/msix.c en QEMU (también conocido como Quick Emulator) permite que usuarios privilegiados invitados locales del sistema operativo provoquen una denegación de servicio (desreferencia de puntero NULL y cierre inesperado del proceso QEMU) ... • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=43b11a91dd861a946b231b89b754285 • CWE-476: NULL Pointer Dereference •

CVSS: 6.5EPSS: 4%CPEs: 6EXPL: 0

03 Feb 2016 — Qemu, when built with VNC display driver support, allows remote attackers to cause a denial of service (arithmetic exception and application crash) via crafted SetPixelFormat messages from a client. Qemu, cuando se construye con soporte de controlador de pantalla VNC, permite a atacantes remotos provocar una denegación de servicio (excepción aritmética y caída de aplicación) a través de mensajes SetPixelFormat manipulados desde un cliente. Qinghao Tang discovered that QEMU incorrectly handled PCI MSI-X supp... • http://git.qemu-project.org/?p=qemu.git%3Ba=commitdiff%3Bh=4c65fed8bdf96780735dbdb92a8 • CWE-369: Divide By Zero •

CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0

03 Feb 2016 — QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while doing I/O port write operations via hmp interface. In that, 'current_cpu' remains null, which leads to the null pointer dereference. A user or process could use this flaw to crash the QEMU instance, resulting in DoS issue. QEMU (también conocido como Quick Emulator) construido con el soporte de invitados TPR optimization for 32-bit Windows es vulnerabl... • http://www.debian.org/security/2016/dsa-3469 • CWE-476: NULL Pointer Dereference •

CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0

03 Feb 2016 — QEMU (aka Quick Emulator) built with the e1000 NIC emulation support is vulnerable to an infinite loop issue. It could occur while processing data via transmit or receive descriptors, provided the initial receive/transmit descriptor head (TDH/RDH) is set outside the allocated descriptor buffer. A privileged user inside guest could use this flaw to crash the QEMU instance resulting in DoS. QEMU (también conocido como Quick Emulator) construido con el soporte de emulación e1000 NIC es vulnerable a un problema... • http://rhn.redhat.com/errata/RHSA-2016-2585.html • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •