CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0CVE-2018-19963
https://notcve.org/view.php?id=CVE-2018-19963
08 Dec 2018 — An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because x86 IOREQ server resource accounting (for external emulators) was mishandled. Se ha descubierto un problema en Xen 4.11 que permite que usuarios HVM invitados del sistema operativo provoquen una denegación de servicio (cierre inesperado del host del sistema operativo) u obtengan privilegios del host del sistema operativo debido a que se ha gestionado de for... • http://www.securityfocus.com/bid/106182 • CWE-617: Reachable Assertion •
CVSS: 8.8EPSS: 0%CPEs: 1EXPL: 0CVE-2018-18883
https://notcve.org/view.php?id=CVE-2018-18883
01 Nov 2018 — An issue was discovered in Xen 4.9.x through 4.11.x, on Intel x86 platforms, allowing x86 HVM and PVH guests to cause a host OS denial of service (NULL pointer dereference) or possibly have unspecified other impact because nested VT-x is not properly restricted. Se ha descubierto un problema en Xen desde las versiones 4.9.x hasta las 4.11.x. en plataformas Intel x86, lo que permite que los invitados x86 HVM y PVH provoquen una denegación de servicio (desreferencia de puntero NULL) del sistema operativo u ot... • http://www.securityfocus.com/bid/105817 • CWE-476: NULL Pointer Dereference •
CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0CVE-2018-15470 – Gentoo Linux Security Advisory 201810-06
https://notcve.org/view.php?id=CVE-2018-15470
17 Aug 2018 — An issue was discovered in Xen through 4.11.x. The logic in oxenstored for handling writes depended on the order of evaluation of expressions making up a tuple. As indicated in section 7.7.3 "Operations on data structures" of the OCaml manual, the order of evaluation of subexpressions is not specified. In practice, different implementations behave differently. Thus, oxenstored may not enforce the configured quota-maxentity. • http://xenbits.xen.org/xsa/advisory-272.html • CWE-400: Uncontrolled Resource Consumption •
CVSS: 7.8EPSS: 0%CPEs: 8EXPL: 0CVE-2018-15471 – Ubuntu Security Notice USN-3819-1
https://notcve.org/view.php?id=CVE-2018-15471
17 Aug 2018 — An issue was discovered in xenvif_set_hash_mapping in drivers/net/xen-netback/hash.c in the Linux kernel through 4.18.1, as used in Xen through 4.11.x and other products. The Linux netback driver allows frontends to control mapping of requests to request queues. When processing a request to set or change this mapping, some input validation (e.g., for an integer overflow) was missing or flawed, leading to OOB access in hash handling. A malicious or buggy frontend may cause the (usually privileged) backend to... • http://xenbits.xen.org/xsa/advisory-270.html • CWE-125: Out-of-bounds Read •
CVSS: 6.0EPSS: 0%CPEs: 1EXPL: 0CVE-2018-15468 – Gentoo Linux Security Advisory 201810-06
https://notcve.org/view.php?id=CVE-2018-15468
17 Aug 2018 — An issue was discovered in Xen through 4.11.x. The DEBUGCTL MSR contains several debugging features, some of which virtualise cleanly, but some do not. In particular, Branch Trace Store is not virtualised by the processor, and software has to be careful to configure it suitably not to lock up the core. As a result, it must only be available to fully trusted guests. Unfortunately, in the case that vPMU is disabled, all value checking was skipped, allowing the guest to choose any MSR_DEBUGCTL setting it likes... • http://xenbits.xen.org/xsa/advisory-269.html • CWE-863: Incorrect Authorization •
CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 0CVE-2018-15469 – Gentoo Linux Security Advisory 201810-06
https://notcve.org/view.php?id=CVE-2018-15469
17 Aug 2018 — An issue was discovered in Xen through 4.11.x. ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they will simply not be properly set up, resulting in subsequent grant-related hypercalls hitting BUG() checks. An unprivileged guest can cause a BUG() check in the hypervisor, resulting in a denial-of-service (crash). Se ha descubierto un problema en Xen hasta las versiones 4.11.x. • http://xenbits.xen.org/xsa/advisory-268.html • CWE-400: Uncontrolled Resource Consumption •
CVSS: 7.8EPSS: 0%CPEs: 8EXPL: 0CVE-2018-14678 – Ubuntu Security Notice USN-3931-2
https://notcve.org/view.php?id=CVE-2018-14678
28 Jul 2018 — An issue was discovered in the Linux kernel through 4.17.11, as used in Xen through 4.11.x. The xen_failsafe_callback entry point in arch/x86/entry/entry_64.S does not properly maintain RBX, which allows local users to cause a denial of service (uninitialized memory usage and system crash). Within Xen, 64-bit x86 PV Linux guest OS users can trigger a guest OS crash or possibly gain privileges. Se ha descubierto un problema en el kernel de Linux hasta la versión 4.17.11, tal y como se utiliza en Xen hasta la... • http://www.securityfocus.com/bid/104924 • CWE-665: Improper Initialization •
CVSS: 9.9EPSS: 0%CPEs: 2EXPL: 0CVE-2018-12892 – Gentoo Linux Security Advisory 201810-06
https://notcve.org/view.php?id=CVE-2018-12892
29 Jun 2018 — An issue was discovered in Xen 4.7 through 4.10.x. libxl fails to pass the readonly flag to qemu when setting up a SCSI disk, due to what was probably an erroneous merge conflict resolution. Malicious guest administrators or (in some situations) users may be able to write to supposedly read-only disk images. Only emulated SCSI disks (specified as "sd" in the libxl disk configuration, or an equivalent) are affected. IDE disks ("hd") are not affected (because attempts to make them readonly are rejected). Addi... • http://www.openwall.com/lists/oss-security/2018/06/27/12 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 6.5EPSS: 0%CPEs: 3EXPL: 0CVE-2018-12891 – Gentoo Linux Security Advisory 201810-06
https://notcve.org/view.php?id=CVE-2018-12891
29 Jun 2018 — 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 •
CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 0CVE-2018-12893 – Gentoo Linux Security Advisory 201810-06
https://notcve.org/view.php?id=CVE-2018-12893
29 Jun 2018 — An issue was discovered in Xen through 4.10.x. One of the fixes in XSA-260 added some safety checks to help prevent Xen livelocking with debug exceptions. Unfortunately, due to an oversight, at least one of these safety checks can be triggered by a guest. A malicious PV guest can crash Xen, leading to a Denial of Service. All Xen systems which have applied the XSA-260 fix are vulnerable. • http://www.openwall.com/lists/oss-security/2018/06/27/11 •