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.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
Disclaimer: The entry creation date may reflect when
the CVE-ID was allocated or reserved, and does not
necessarily indicate when this vulnerability was
discovered, shared with the affected vendor, publicly
disclosed, or updated in CVE.
This is an entry on the CVE
list, which standardizes names for security