Rapid7 Vulnerability & Exploit Database

Debian: CVE-2016-3158: xen -- security update

Back to Search

Debian: CVE-2016-3158: xen -- security update

Severity
2
CVSS
(AV:L/AC:L/Au:S/C:P/I:N/A:N)
Published
04/13/2016
Created
07/25/2018
Added
04/22/2016
Modified
03/02/2020

Description

The xrstor function in arch/x86/xstate.c in Xen 4.x does not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allows local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-2076.

Solution(s)

  • debian-upgrade-xen

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;