CVE-2015-8550 Information

Description

Xen when used on a system providing PV backends allows local guest OS administrators to cause a denial of service (host OS crash) or gain privileges by writing to memory shared between the frontend and backend aka a double fetch vulnerability.

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html http://www.debian.org/security/2016/dsa-3434 http://www.debian.org/security/2016/dsa-3471 http://www.debian.org/security/2016/dsa-3519 http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html http://www.securityfocus.com/bid/79592 http://www.securitytracker.com/id/1034479 http://xenbits.xen.org/xsa/advisory-155.html https://security.gentoo.org/glsa/201604-03

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