CVE-2014-7840 – qemu: insufficient parameter validation during ram load
https://notcve.org/view.php?id=CVE-2014-7840
The host_from_stream_offset function in arch_init.c in QEMU, when loading RAM during migration, allows remote attackers to execute arbitrary code via a crafted (1) offset or (2) length value in savevm data. La función host_from_stream_offset en arch_init.c en QEMU, cuando carga RAM durante la migración, permite a atacantes remotos ejecutar código arbitrario a través de un valor (1) offset o (2) length manipulado en datos savevm. It was found that certain values that were read when loading RAM during migration were not validated. A user able to alter the savevm data (either on the disk or over the wire during migration) could use either of these flaws to corrupt QEMU process memory on the (destination) host, which could potentially result in arbitrary code execution on the host with the privileges of the QEMU process. • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=0be839a2701369f669532ea5884c15bead1c6e08 http://rhn.redhat.com/errata/RHSA-2015-0349.html http://rhn.redhat.com/errata/RHSA-2015-0624.html http://thread.gmane.org/gmane.comp.emulators.qemu/306117 https://bugzilla.redhat.com/show_bug.cgi?id=1163075 https://exchange.xforce.ibmcloud.com/vulnerabilities/99194 https://access.redhat.com/security/cve/CVE-2014-7840 • CWE-20: Improper Input Validation CWE-122: Heap-based Buffer Overflow •
CVE-2014-5388
https://notcve.org/view.php?id=CVE-2014-5388
Off-by-one error in the pci_read function in the ACPI PCI hotplug interface (hw/acpi/pcihp.c) in QEMU allows local guest users to obtain sensitive information and have other unspecified impact related to a crafted PCI device that triggers memory corruption. Error de superación de límite (off-by-one) en la función pci_read en ACPI PCI interfaz hotplug (hw/acpi/pcihp.c) en QEMU permite a usuarios locales invitados obtener información sensible y tener otro impacto no especificado relacionado con un dispositivo PCI manipulado que provoca daños en la memoria. • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=fa365d7cd11185237471823a5a33d36765454e16 http://seclists.org/oss-sec/2014/q3/438 http://seclists.org/oss-sec/2014/q3/440 http://www.ubuntu.com/usn/USN-2409-1 https://bugzilla.redhat.com/show_bug.cgi?id=1132956 https://lists.gnu.org/archive/html/qemu-devel/2014-08/msg03338.html • CWE-193: Off-by-one Error •
CVE-2014-3689
https://notcve.org/view.php?id=CVE-2014-3689
The vmware-vga driver (hw/display/vmware_vga.c) in QEMU allows local guest users to write to qemu memory locations and gain privileges via unspecified parameters related to rectangle handling. El driver vmware-vga (hw/display/vmware_vga.c) en QEMU permite a usuarios locales invitados escribir en la localizaciones de la memoria en qemu y ganar privilegios a través de parámetros sin especificar relacionados con la manipulación del rectángulo. • http://secunia.com/advisories/60923 http://secunia.com/advisories/62143 http://secunia.com/advisories/62144 http://www.debian.org/security/2014/dsa-3066 http://www.debian.org/security/2014/dsa-3067 http://www.osvdb.org/114397 http://www.ubuntu.com/usn/USN-2409-1 https://www.mail-archive.com/qemu-devel%40nongnu.org/msg261580.html • CWE-269: Improper Privilege Management •
CVE-2014-7815 – qemu: vnc: insufficient bits_per_pixel from the client sanitization
https://notcve.org/view.php?id=CVE-2014-7815
The set_pixel_format function in ui/vnc.c in QEMU allows remote attackers to cause a denial of service (crash) via a small bytes_per_pixel value. La función set_pixel_format en ui/vnc.c en QEMU permite a atacantes remotos causar una denegación de servicio (caída) a través de valores pequeños de bytes_per_pixel. An uninitialized data structure use flaw was found in the way the set_pixel_format() function sanitized the value of bits_per_pixel. An attacker able to access a guest's VNC console could use this flaw to crash the guest. • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=e6908bfe8e07f2b452e78e677da1b45b1c0f6829 http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00019.html http://rhn.redhat.com/errata/RHSA-2015-0349.html http://rhn.redhat.com/errata/RHSA-2015-0624.html http://secunia.com/advisories/61484 http://secunia.com/advisories/62143 http://secunia.com/advisories/62144 http://support.citrix.com/article/CTX200892 http://www.debian.org/security/2014/dsa-3066 http://www.debian.org/secu • CWE-20: Improper Input Validation •
CVE-2014-3615 – Qemu: information leakage when guest sets high resolution
https://notcve.org/view.php?id=CVE-2014-3615
The VGA emulator in QEMU allows local guest users to read host memory by setting the display to a high resolution. El emulador VGA en QEMU permite a usuarios locales invitados leer la memoria del anfitrión mediante la configuración de la pantalla a una resolución alta. An information leak flaw was found in the way QEMU's VGA emulator accessed frame buffer memory for high resolution displays. A privileged guest user could use this flaw to leak memory contents of the host to the guest by setting the display to use a high resolution in the guest. • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=ab9509cceabef28071e41bdfa073083859c949a7 http://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=c1b886c45dc70f247300f549dce9833f3fa2def5 http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html http://rhn.redhat.com/errata/RHSA-2014-1669.html http://rhn.redhat.com/errata/RHSA-2014-1670.html http://rhn.redhat.com/errata/RHSA-2014-1941.html http://secunia.com/advisories/61829 http://support.citrix.com/article/CTX200892 http://www.de • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •