Citrix XenServer Directory Traversal Vulnerability

Citrix XenServer is an open source virtualization platform for managing cloud, server and desktop virtual infrastructures from Citrix Systems. The platform provides virtual machine monitoring, management and maintenance through an intuitive interface. A directory traversal vulnerability exists in...

UBUNTU-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...

xen: Xen domain builder Out-of-memory due to malicious kernel/ramdisk

The PV domain builder in Xen 4.2 and earlier does not validate the size of the kernel or ramdisk 1 before or 2 after decompression, which allows local guest administrators to cause a denial of service domain 0 memory consumption via a crafted a kernel or b ramdisk...

HVM guest destroy p2m teardown host DoS vulnerability

ISSUE DESCRIPTION An HVM guest is able to manipulate its physical address space such that tearing down the guest takes an extended period amount of time searching for shared pages. This causes the domain 0 VCPU which tears down the domain to be blocked in the destroy hypercall. This causes that...

xen guest root can escape to domain 0 through pygrub

pygrub tools/pygrub/src/GrubConf.py in Xen 3.0.3, when booting a guest domain, allows local users with elevated privileges in the guest domain to execute arbitrary commands in domain 0 via a crafted grub.conf file whose contents are used in exec statements...