CVE-2015-8555

MEDIUM

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.

References

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

Details

Source: MITRE

Published: 2016-04-13

Updated: 2017-07-01

Type: CWE-200

Risk Information

CVSS v2.0

Base Score: 5

Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N)

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 8.6

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

Impact Score: 4

Exploitability Score: 3.9

Severity: HIGH