Information Exposure Affecting xen package, versions <4.2.2-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.06% (28th percentile)

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  • Snyk IDSNYK-DEBIAN11-XEN-529877
  • published28 Aug 2013
  • disclosed28 Aug 2013

Introduced: 28 Aug 2013

CVE-2013-2076  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Debian:11 xen to version 4.2.2-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

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.

CVSS Scores

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