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CVE-2015-8555

Publication date 13 April 2016

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

8.6 · High

Score breakdown

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.

Status

Package Ubuntu Release Status
xen 15.10 wily
Fixed 4.5.1-0ubuntu1.2
15.04 vivid
Fixed 4.5.0-1ubuntu4.4
14.04 LTS trusty
Fixed 4.4.2-0ubuntu0.14.04.4
12.04 LTS precise
Fixed 4.1.6.1-0ubuntu0.12.04.8

Severity score breakdown

Parameter Value
Base score 8.6 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Changed
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N