CVE-2015-8555 Information

Description

Xen 4.6.x 4.5.x 4.4.x 4.3.x and earlier do not initialize x86 FPU stack and XMM registers when XSAVE/XRSTOR are not used to manage guest extended register state which allows local guest domains to obtain sensitive information from other domains via unspecified vectors.

CVSS Vector

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

Reference

http://support.citrix.com/article/CTX203879 http://www.debian.org/security/2016/dsa-3519 http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html http://www.securityfocus.com/bid/79543 http://www.securitytracker.com/id/1034477 http://xenbits.xen.org/xsa/advisory-165.html https://security.gentoo.org/glsa/201604-03

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

8.6