Improper Input Validation Affecting xen package, versions <4.2.0-1ubuntu2


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.06% (31st percentile)

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  • Snyk IDSNYK-UBUNTU1304-XEN-366625
  • published31 Oct 2012
  • disclosed31 Oct 2012

Introduced: 31 Oct 2012

CVE-2012-4544  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Ubuntu:13.04 xen to version 4.2.0-1ubuntu2 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 Ubuntu. See How to fix? for Ubuntu:13.04 relevant fixed versions and status.

The PV domain builder in Xen 4.2 and earlier does not validate the size of the kernel or ramdisk (1) before or (2) after decompression, which allows local guest administrators to cause a denial of service (domain 0 memory consumption) via a crafted (a) kernel or (b) ramdisk.

CVSS Scores

version 3.1