CVSS: 4.9EPSS: 0%CPEs: 37EXPL: 0CVE-2015-4164
https://notcve.org/view.php?id=CVE-2015-4164
The compat_iret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service (large loop and system hang) via a hypercall_iret call with EFLAGS.VM set. La función compat_iret en Xen 3.1 hasta 4.5 itera en la dirección errónea a través de un bucle, lo que permite a administradores locales invitados de PV de 32 dits causar una denegación de servicio (bucle grande y cuelgue del sistema) a través de una llamada hypercall_iret con el juego EFLAGS.VM. • 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/msg00029.html http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00014.html http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00027.html http://support.citrix.com/article/CTX201145 http://www. • CWE-399: Resource Management Errors •
CVSS: 1.9EPSS: 0%CPEs: 4EXPL: 0CVE-2015-2152
https://notcve.org/view.php?id=CVE-2015-2152
Xen 4.5.x and earlier enables certain default backends when emulating a VGA device for an x86 HVM guest qemu even when the configuration disables them, which allows local guest users to obtain access to the VGA console by (1) setting the DISPLAY environment variable, when compiled with SDL support, or connecting to the VNC server on (2) ::1 or (3) 127.0.0.1, when not compiled with SDL support. Xen 4.5.x y anteriores capacita a ciertos backends por defecto cuando emula un dispositivo VGA para una gemu invitado de x86 HVM incluso cuando la configuración las descapacite, lo que permite a usuarios locales invitados obtener acceso a la consola VGA mediante (1) la configuración de la variable de entorno DISPLAY, cuando esté compilada con el soporte SDL, o la conexión al servidor VNC server en (2) ::1 o (3) 127.0.0.1, cuando no esté compilado con el soporte SDL. • http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152483.html http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152588.html http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152776.html http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html http://www.securityfocus.com/bid/73068 http://www.securitytracker.com/id/1031806 http://www.securitytracker.com/id/1031919 http://xenbits.xen.org/xsa/advisory-119.html https://security& • CWE-264: Permissions, Privileges, and Access Controls •
CVSS: 2.1EPSS: 0%CPEs: 38EXPL: 0CVE-2015-2045
https://notcve.org/view.php?id=CVE-2015-2045
The HYPERVISOR_xen_version hypercall in Xen 3.2.x through 4.5.x does not properly initialize data structures, which allows local guest users to obtain sensitive information via unspecified vectors. La hiperllamada HYPERVISOR_xen_version en Xen 3.2.x hasta 4.5.x ni inicializa correctamente las estructuras de datos, lo que permite a usuarios locales invitados obtener información sensible a través de vectores no especificados. • http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152483.html http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152588.html http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152776.html http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html http://support.citrix.com/article/CTX200484 http://www.debian.org/security/2015/dsa-3181 http://www.securityfocus.com/bid/72955 http://www.securitytracker.com/id/1031806 http://www. • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 7.2EPSS: 0%CPEs: 38EXPL: 0CVE-2015-2151 – xen: hypervisor memory corruption due to x86 emulator flaw (xsa123)
https://notcve.org/view.php?id=CVE-2015-2151
The x86 emulator in Xen 3.2.x through 4.5.x does not properly ignore segment overrides for instructions with register operands, which allows local guest users to obtain sensitive information, cause a denial of service (memory corruption), or possibly execute arbitrary code via unspecified vectors. El emulador x86 en Xen 3.2.x hasta 4.5.x no ignora correctamente las anulaciones de segmentos para instrucciones con operandos del registro, lo que permite a usuarios locales invitados obtener información sensible, causar una denegación de servicio (corrupción de memoria), o posiblemente ejecutar código arbitrario a través de vectores no especificados. It was found that the Xen hypervisor x86 CPU emulator implementation did not correctly handle certain instructions with segment overrides, potentially resulting in a memory corruption. A malicious guest user could use this flaw to read arbitrary data relating to other guests, cause a denial of service on the host, or potentially escalate their privileges on the host. • http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761 http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152483.html http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152588.html http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152776.html http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html http://support.citrix.com/article/CTX200484 http://www.debian.org/security/2015/dsa-3181 http://www.oracle.com/technetwork/ • CWE-264: Permissions, Privileges, and Access Controls •
CVSS: 2.1EPSS: 0%CPEs: 34EXPL: 0CVE-2015-2044
https://notcve.org/view.php?id=CVE-2015-2044
The emulation routines for unspecified X86 devices in Xen 3.2.x through 4.5.x does not properly initialize data, which allow local HVM guest users to obtain sensitive information via vectors involving an unsupported access size. Las rutinas de emulación para dispositivos X86 no especificados en Xen 3.2.x hasta 4.5.x no inicializa correctamente los datos, lo que permite a usuarios locales invitados HVM obtener información sensible a través de vectores que involucran un tamaño de acceso no soportado. • http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152483.html http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152588.html http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152776.html http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html http://support.citrix.com/article/CTX200484 http://www.debian.org/security/2015/dsa-3181 http://www.securityfocus.com/bid/72954 http://www.securitytracker.com/id/1031806 http://www. • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •