Xen gnttab_map_frame() Function Missing Mapping Check Upgrade Guest-to-host DoS (XSA-255)

Medium Nessus Plugin ID 107098


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 affected by a denial of service vulnerability.

Note that Nessus has checked the changeset versions based on the xen.git change log. 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: Medium

ID: 107098

File Name: xen_server_XSA-255.nasl

Version: $Revision: 1.1 $

Type: local

Family: Misc.

Published: 2018/03/02

Modified: 2018/03/02

Dependencies: 78089

Risk Information

Risk Factor: Medium


Base Score: 4.7

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


Base Score: 5.6

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

Vulnerability Information

CPE: cpe:/o:xen:xen

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

Patch Publication Date: 2018/02/27

Vulnerability Publication Date: 2018/02/27

Reference Information

CVE: CVE-2018-7541

BID: 103177

OSVDB: 175697

IAVB: 2018-B-0031