Information Exposure Affecting xen package, versions [,4.3.1)


Severity

Recommended
0.0
low
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.06% (28th percentile)

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  • Snyk IDSNYK-UNMANAGED-XEN-2383757
  • published26 Jan 2022
  • disclosed17 Oct 2013
  • creditUnknown

Introduced: 17 Oct 2013

CVE-2013-4368  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade xen to version 4.3.1 or higher.

Overview

Affected versions of this package are vulnerable to Information Exposure. The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.

CVSS Scores

version 3.1