Xen Guest Destruction Memory Leak DoS (XSA-207)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote Xen hypervisor installation is missing a security update.

Description :

According to its self-reported version number, the Xen hypervisor
installed on the remote host is missing a security update. It is,
therefore, affected by a memory leak issue due to improper cleanup
during guest destruction. A guest attacker can exploit this issue, via
frequent rebooting, to eventually exhaust the system memory of the
host system, resulting in a denial service condition. Note that Intel
systems and systems without IOMMU/SMMU hardware are not affected by
this vulnerability.

Nessus has not tested for this vulnerability but has instead relied
only on the changeset versions based on the xen.git change log.
Additionally, Nessus did not check guest hardware configurations or if
patches were applied manually to the source code before a recompile
and reinstall.

See also :

https://xenbits.xen.org/xsa/advisory-207.html
https://xenbits.xen.org/gitweb/?p=xen.git;a=summary

Solution :

Apply the appropriate patch according to the vendor advisory.

Risk factor :

Low / CVSS Base Score : 3.3
(CVSS2#AV:A/AC:L/Au:N/C:N/I:N/A:P)
CVSS Temporal Score : 2.7
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Misc.

Nessus Plugin ID: 97388 ()

Bugtraq ID:

CVE ID:

Ready to Amp Up Your Nessus Experience?

Get Nessus Professional to scan unlimited IPs, run compliance checks & more

Buy Nessus Professional Now