CVE-2016-7093 Information

Description

Xen 4.5.3 4.6.3 and 4.7.x allow local HVM guest OS administrators to overwrite hypervisor memory and consequently gain host OS privileges by leveraging mishandling of instruction pointer truncation during emulation.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Reference

http://support.citrix.com/article/CTX216071 http://www.securityfocus.com/bid/92865 http://www.securitytracker.com/id/1036752 http://xenbits.xen.org/xsa/advisory-186.html http://xenbits.xen.org/xsa/xsa186-0001-x86-emulate-Correct-boundary-interactions-of-emulate.patch https://security.gentoo.org/glsa/201611-09

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.2