CVSS: 2.1EPSS: 0%CPEs: 8EXPL: 0CVE-2012-3494
https://notcve.org/view.php?id=CVE-2012-3494
The set_debugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when running on x86-64 systems, allows local OS guest users to cause a denial of service (host crash) by writing to the reserved bits of the DR7 debug control register. La hiperllamada et_debugreg en include/asm-x86/debugreg.h en Xen v4.0, v4.1, y v4.2, y Citrix XenServer v6.0.2 y anteriores, cuando se ejecuta sobre systemas x86-64, permite a usuarios locales del SO invitado generar una denegación de servicio (caída del host) mediante la escritura de ciertos bits reservados para el registro de control DR • http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html http://lists.opensuse.org/opensuse-security-announce/2012-09 • CWE-264: Permissions, Privileges, and Access Controls •
CVSS: 4.7EPSS: 0%CPEs: 4EXPL: 0CVE-2012-3496
https://notcve.org/view.php?id=CVE-2012-3496
XENMEM_populate_physmap in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when translating paging mode is not used, allows local PV OS guest kernels to cause a denial of service (BUG triggered and host crash) via invalid flags such as MEMF_populate_on_demand. XENMEM_populate_physmap en Xen v4.0, v4.1, y v4.2, y Citrix XenServer v6.0.2 y anteriores, cuando el modo de traducción de página no se utiliza, permite a los kernels locales PV del SO invitado causar una denegación de servicio (caída del host) a través flags inválidos como MEMF_populate_on_demand. • http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html http://lists.opensuse.org/opensuse-security-announce/2012-11 • CWE-16: Configuration •
CVSS: 7.9EPSS: 0%CPEs: 20EXPL: 4CVE-2012-0217 – FreeBSD Intel SYSRET Privilege Escalation
https://notcve.org/view.php?id=CVE-2012-0217
The x86-64 kernel system-call functionality in Xen 4.1.2 and earlier, as used in Citrix XenServer 6.0.2 and earlier and other products; Oracle Solaris 11 and earlier; illumos before r13724; Joyent SmartOS before 20120614T184600Z; FreeBSD before 9.0-RELEASE-p3; NetBSD 6.0 Beta and earlier; Microsoft Windows Server 2008 R2 and R2 SP1 and Windows 7 Gold and SP1; and possibly other operating systems, when running on an Intel processor, incorrectly uses the sysret path in cases where a certain address is not a canonical address, which allows local users to gain privileges via a crafted application. NOTE: because this issue is due to incorrect use of the Intel specification, it should have been split into separate identifiers; however, there was some value in preserving the original mapping of the multi-codebase coordinated-disclosure effort to a single identifier. El modo de usuario Scheduler en el núcleo en Microsoft Windows Server v2008 R2 y R2 SP1 y Windows v7 Gold y SP1 sobre la plataforma x64 no maneja adecuadamente solicitudes del sistema, lo que permite a usuarios locales obtener privilegios a través de una aplicación modificada, también conocida como "vulnerabilidad de corrupción de memoria de modo de usuario Scheduler". It was found that the Xen hypervisor implementation as shipped with Red Hat Enterprise Linux 5 did not properly restrict the syscall return addresses in the sysret return path to canonical addresses. An unprivileged user in a 64-bit para-virtualized guest, that is running on a 64-bit host that has an Intel CPU, could use this flaw to crash the host or, potentially, escalate their privileges, allowing them to execute arbitrary code at the hypervisor level. • https://www.exploit-db.com/exploits/46508 https://www.exploit-db.com/exploits/28718 https://www.exploit-db.com/exploits/20861 http://blog.illumos.org/2012/06/14/illumos-vulnerability-patched http://blog.xen.org/index.php/2012/06/13/the-intel-sysret-privilege-escalation http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2012-003.txt.asc http://lists.xen.org/archives/html/xen-announce/2012-06/msg00001.html http://lists.xen.org/archives/html/xen-devel/2012-06 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 6.0EPSS: 0%CPEs: 4EXPL: 0CVE-2011-3262 – xen: insufficiencies in pv kernel image validation
https://notcve.org/view.php?id=CVE-2011-3262
tools/libxc/xc_dom_bzimageloader.c in Xen 3.2, 3.3, 4.0, and 4.1 allows local users to cause a denial of service (management software infinite loop and management domain resource consumption) via unspecified vectors related to "Lack of error checking in the decompression loop." tools/libxc/xc_dom_bzimageloader.c en Xen v3.2, v3.3, v4.0 y v4.1 permite a usuarios locales provocar una denegación de servicio (bucle infinito de software de gestión y excesivo consumo de recursos en el administrador de dominios) a través de vectores no especificados relacionados con "La falta de comprobación de errores en el bucle de descompresión". • http://lists.xensource.com/archives/html/xen-devel/2011-05/msg00483.html http://lists.xensource.com/archives/html/xen-devel/2011-05/msg00491.html http://secunia.com/advisories/55082 http://security.gentoo.org/glsa/glsa-201309-24.xml https://exchange.xforce.ibmcloud.com/vulnerabilities/69381 https://access.redhat.com/security/cve/CVE-2011-3262 https://bugzilla.redhat.com/show_bug.cgi?id=696927 • CWE-399: Resource Management Errors •
CVSS: 6.9EPSS: 0%CPEs: 4EXPL: 0CVE-2011-1583 – xen: insufficiencies in pv kernel image validation
https://notcve.org/view.php?id=CVE-2011-1583
Multiple integer overflows in tools/libxc/xc_dom_bzimageloader.c in Xen 3.2, 3.3, 4.0, and 4.1 allow local users to cause a denial of service and possibly execute arbitrary code via a crafted paravirtualised guest kernel image that triggers (1) a buffer overflow during a decompression loop or (2) an out-of-bounds read in the loader involving unspecified length fields. Múltiples desbordamientos de entero en tools/libxc/xc_dom_bzimageloader.c en Xen v3.2, v3.3, v4.0, y v4.1 permite a usuarios locales provocar una denegación de servicio y posiblemente ejecutar código de su elección a través de invitados "paravirtualizados" manipulados en la imagen del kernel que dispara (1) un desbordamiento de búfer durante la descompresión de bucle o (2) una lectura fuera de límites en el cargador envolviendo un campo de longitud no especificada. • http://lists.xensource.com/archives/html/xen-devel/2011-05/msg00483.html http://lists.xensource.com/archives/html/xen-devel/2011-05/msg00491.html http://rhn.redhat.com/errata/RHSA-2011-0496.html https://access.redhat.com/security/cve/CVE-2011-1583 https://bugzilla.redhat.com/show_bug.cgi?id=696927 • CWE-189: Numeric Errors •