Information Exposure Affecting xen package, versions [,4.3.0)


Severity

Recommended
0.0
low
0
10

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

Threat Intelligence

EPSS
0.07% (34th percentile)

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  • Snyk IDSNYK-UNMANAGED-XEN-2383846
  • published26 Jan 2022
  • disclosed3 May 2017
  • creditUnknown

Introduced: 3 May 2017

CVE-2017-7995  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade xen to version 4.3.0 or higher.

Overview

Affected versions of this package are vulnerable to Information Exposure. Xen PV guest before Xen 4.3 checked access permissions to MMIO ranges only after accessing them, allowing host PCI device space memory reads, leading to information disclosure. This is an error in the get_user function. NOTE: the upstream Xen Project considers versions before 4.5.x to be EOL.

CVSS Scores

version 3.1