CVSS: 6.5EPSS: 0%CPEs: 3EXPL: 0CVE-2018-12891
https://notcve.org/view.php?id=CVE-2018-12891
An issue was discovered in Xen through 4.10.x. Certain PV MMU operations may take a long time to process. For that reason Xen explicitly checks for the need to preempt the current vCPU at certain points. A few rarely taken code paths did bypass such checks. By suitably enforcing the conditions through its own page table contents, a malicious guest may cause such bypasses to be used for an unbounded number of iterations. • http://www.openwall.com/lists/oss-security/2018/06/27/10 http://www.securityfocus.com/bid/104570 http://www.securitytracker.com/id/1041201 http://xenbits.xen.org/xsa/advisory-264.html https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html https://security.gentoo.org/glsa/201810-06 https://support.citrix.com/article/CTX235748 https://www.debian.org/security/2018/dsa-4236 •
CVSS: 8.8EPSS: 0%CPEs: 4EXPL: 0CVE-2018-10982
https://notcve.org/view.php?id=CVE-2018-10982
An issue was discovered in Xen through 4.10.x allowing x86 HVM guest OS users to cause a denial of service (unexpectedly high interrupt number, array overrun, and hypervisor crash) or possibly gain hypervisor privileges by setting up an HPET timer to deliver interrupts in IO-APIC mode, aka vHPET interrupt injection. Se ha descubierto un problema en Xen hasta las versiones 4.10.x que permite que usuarios invitados del sistema operativo x86 HVM provoquen una denegación de servicio (número de interrupción sorprendentemente alto, sobrescritura del array y cierre inesperado del hipervisor) o ganen privilegios del hipervisor estableciendo un temporizador HPET para realizar interrupciones en el modo IO-APIC. Esto también se conoce como inyección de interrupción vHPET. • http://openwall.com/lists/oss-security/2018/05/08/2 http://www.securityfocus.com/bid/104150 https://lists.debian.org/debian-lts-announce/2018/05/msg00015.html https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html https://security.gentoo.org/glsa/201810-06 https://www.debian.org/security/2018/dsa-4201 https://xenbits.xen.org/xsa/advisory-261.html •
CVSS: 6.5EPSS: 0%CPEs: 4EXPL: 0CVE-2018-10981
https://notcve.org/view.php?id=CVE-2018-10981
An issue was discovered in Xen through 4.10.x allowing x86 HVM guest OS users to cause a denial of service (host OS infinite loop) in situations where a QEMU device model attempts to make invalid transitions between states of a request. Se ha descubierto un problema en Xen hasta las versiones 4.10.x que permite que usuarios invitados del sistema operativo x86 HVM provoquen una denegación de servicio (bucle infinito del sistema operativo del host) en situaciones en las que un modelo de dispositivo QEMU intenta realizar transiciones no válidas entre estados de una petición. • http://openwall.com/lists/oss-security/2018/05/08/3 http://www.securityfocus.com/bid/104149 https://lists.debian.org/debian-lts-announce/2018/05/msg00015.html https://lists.debian.org/debian-lts-announce/2018/10/msg00021.html https://security.gentoo.org/glsa/201810-06 https://www.debian.org/security/2018/dsa-4201 https://xenbits.xen.org/xsa/advisory-262.html • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 0CVE-2018-10471
https://notcve.org/view.php?id=CVE-2018-10471
An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service (out-of-bounds zero write and hypervisor crash) via unexpected INT 80 processing, because of an incorrect fix for CVE-2017-5754. Se ha descubierto un problema en Xen hasta las versiones 4.10.x que permite que los usuarios del sistema operativo PV x86 invitado provoquen una denegación de servicio (escritura en cero fuera de límites y cierre inesperado del hipervisor) mediante el procesamiento INT 80 inesperado, debido a una solución incorrecta para CVE-2017-5754. • http://www.securityfocus.com/bid/104003 https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html https://security.gentoo.org/glsa/201810-06 https://www.debian.org/security/2018/dsa-4201 https://xenbits.xen.org/xsa/advisory-259.html • CWE-787: Out-of-bounds Write •
CVSS: 5.6EPSS: 0%CPEs: 2EXPL: 0CVE-2018-10472
https://notcve.org/view.php?id=CVE-2018-10472
An issue was discovered in Xen through 4.10.x allowing x86 HVM guest OS users (in certain configurations) to read arbitrary dom0 files via QMP live insertion of a CDROM, in conjunction with specifying the target file as the backing file of a snapshot. Se ha descubierto un problema en Xen hasta las versiones 4.10.x que permite que usuarios HVM x86 del sistema operativo invitado (en ciertas configuraciones) lean archivos dom0 arbitrarios mediante la inserción QMP de un CDROM, además de especificando el archivo objetivo como el archivo de copia de seguridad de una captura. • http://www.securityfocus.com/bid/104002 https://lists.debian.org/debian-lts-announce/2018/10/msg00021.html https://security.gentoo.org/glsa/201810-06 https://www.debian.org/security/2018/dsa-4201 https://xenbits.xen.org/xsa/advisory-258.html • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •