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Gentoo Linux: CVE-2013-2076: Xen: Multiple vulnerabilities

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Gentoo Linux: CVE-2013-2076: Xen: Multiple vulnerabilities

Severity
4
CVSS
(AV:A/AC:H/Au:S/C:C/I:N/A:N)
Published
08/28/2013
Created
07/25/2018
Added
10/30/2017
Modified
10/30/2017

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)

  • gentoo-linux-upgrade-app-emulation-xen
  • gentoo-linux-upgrade-app-emulation-xen-pvgrub
  • gentoo-linux-upgrade-app-emulation-xen-tools

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