Fedora 24 : xen (2017-b3bdaf58bc)

Critical Nessus Plugin ID 101183

Synopsis

The remote Fedora host is missing a security update.

Description

xen: various flaws (#1463247) blkif responses leak backend stack data [XSA-216] page transfer may allow PV guest to elevate privilege [XSA-217] Races in the grant table unmap code [XSA-218] x86:
insufficient reference counts during shadow emulation [XSA-219] x86:
PKRU and BND* leakage between vCPU-s [XSA-220] stale P2M mappings due to insufficient error checking [XSA-222] ARM guest disabling interrupt may crash Xen [XSA-223] grant table operations mishandle reference counts [XSA-224] arm: vgic: Out-of-bound access when sending SGIs [XSA-225] NULL pointer deref in event channel poll [XSA-221] (#1463231)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected xen package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2017-b3bdaf58bc

Plugin Details

Severity: Critical

ID: 101183

File Name: fedora_2017-b3bdaf58bc.nasl

Version: Revision: 3.5

Type: local

Agent: unix

Published: 2017/07/03

Updated: 2018/02/02

Dependencies: 12634

Risk Information

Risk Factor: Critical

CVSS v2.0

Base Score: 10

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

CVSS v3.0

Base Score: 10

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

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:xen, cpe:/o:fedoraproject:fedora:24

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 2017/07/01

Reference Information

CVE: CVE-2017-10911, CVE-2017-10912, CVE-2017-10913, CVE-2017-10915, CVE-2017-10916, CVE-2017-10917, CVE-2017-10918, CVE-2017-10919, CVE-2017-10920, CVE-2017-10923

FEDORA: 2017-b3bdaf58bc

IAVB: 2017-B-0074