Rapid7 Vulnerability & Exploit Database

Alpine Linux: CVE-2013-2076: xen CVE-2013-2076 Information leak on XSAVE/XRSTOR capable AMD CPUs

Back to Search

Alpine Linux: CVE-2013-2076: xen CVE-2013-2076 Information leak on XSAVE/XRSTOR capable AMD CPUs

Severity
4
CVSS
(AV:A/AC:H/Au:S/C:C/I:N/A:N)
Published
08/28/2013
Created
07/25/2018
Added
08/30/2017
Modified
09/22/2017

Description

Xen 4.0.x, 4.1.x, and 4.2.x, when running on AMD64 processors, only save/restore the FOP, FIP, and FDP x87 registers in FXSAVE/FXRSTOR when an exception is pending, which allows one domain to determine portions of the state of floating point instructions of other domains, which can be leveraged to obtain sensitive information such as cryptographic keys, a similar vulnerability to CVE-2006-1056. NOTE: this is the documented behavior of AMD64 processors, but it is inconsistent with Intel processors in a security-relevant fashion that was not addressed by the kernels.

Solution(s)

  • alpine-linux-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

;