Xen Guest Destruction Memory Leak DoS (XSA-207)

Low Nessus Plugin ID 97388


The remote Xen hypervisor installation is missing a security update.


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.


Apply the appropriate patch according to the vendor advisory.

See Also



Plugin Details

Severity: Low

ID: 97388

File Name: xen_server_XSA-207.nasl

Version: $Revision: 1.2 $

Type: local

Family: Misc.

Published: 2017/02/24

Modified: 2017/02/28

Dependencies: 78089

Risk Information

Risk Factor: Low


Base Score: 3.3

Temporal Score: 2.7

Vector: CVSS2#AV:A/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: CVSS2#E:F/RL:OF/RC:ND


Base Score: 4.3

Temporal Score: 4

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:X

Vulnerability Information

CPE: cpe:/o:xen:xen

Required KB Items: installed_sw/Xen Hypervisor, Settings/ParanoidReport

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2016/02/15

Vulnerability Publication Date: 2017/02/15

Reference Information

OSVDB: 152191