CVE-2016-6258 Information

Description

The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and earlier allows local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries.

CVSS Vector

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

Reference

http://support.citrix.com/article/CTX214954 http://www.debian.org/security/2016/dsa-3633 http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html http://www.securityfocus.com/bid/92131 http://www.securitytracker.com/id/1036446 http://xenbits.xen.org/xsa/advisory-182.html http://xenbits.xen.org/xsa/xsa182-4.5.patch http://xenbits.xen.org/xsa/xsa182-4.6.patch http://xenbits.xen.org/xsa/xsa182-unstable.patch https://security.gentoo.org/glsa/201611-09

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8