CVE Reference: CVE-2013-2076

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Original Page at CVE MITRE:
CVE-2013-2076

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.

CVE Status:
Candidate

References:

SUSE
  http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html

SAID
  Secunia Advisory: SA55082

MLIST
  http://www.openwall.com/lists/oss-security/2013/06/03/1

GENTOO
  http://security.gentoo.org/glsa/glsa-201309-24.xml

DEBIAN
  http://www.debian.org/security/2014/dsa-3006


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