CVE-2017-10916 Information

Description

The vCPU context-switch implementation in Xen through 4.8.x improperly interacts with the Memory Protection Extensions (MPX) and Protection Key (PKU) features which makes it easier for guest OS users to defeat ASLR and other protection mechanisms aka XSA-220.

CVSS Vector

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

Reference

http://www.debian.org/security/2017/dsa-3969 http://www.securityfocus.com/bid/99167 http://www.securitytracker.com/id/1038730 https://security.gentoo.org/glsa/201708-03 https://xenbits.xen.org/xsa/advisory-220.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

7.5