Debian DLA-783-1 : xen security update

Medium Nessus Plugin ID 96491

Synopsis

The remote Debian host is missing a security update.

Description

Multiple vulnerabilities have been discovered in the Xen hypervisor.
The Common Vulnerabilities and Exposures project identifies the following problems :

CVE-2016-10013 (xsa-204)

Xen mishandles SYSCALL singlestep during emulation which can lead to privilege escalation. The vulnerability is only exposed to 64-bit x86 HVM guests.

CVE-2016-10024 (xsa-202)

PV guests may be able to mask interrupts causing a Denial of Service.

For Debian 7 'Wheezy', these problems have been fixed in version 4.1.6.lts1-5.

We recommend that you upgrade your xen packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected packages.

See Also

https://lists.debian.org/debian-lts-announce/2017/01/msg00014.html

https://packages.debian.org/source/wheezy/xen

Plugin Details

Severity: Medium

ID: 96491

File Name: debian_DLA-783.nasl

Version: 3.7

Type: local

Agent: unix

Published: 2017/01/16

Updated: 2018/07/13

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.9

Temporal Score: 3.6

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 7.8

Temporal Score: 6.8

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libxen-4.1, p-cpe:/a:debian:debian_linux:libxen-dev, p-cpe:/a:debian:debian_linux:libxen-ocaml, p-cpe:/a:debian:debian_linux:libxen-ocaml-dev, p-cpe:/a:debian:debian_linux:libxenstore3.0, p-cpe:/a:debian:debian_linux:xen-docs-4.1, p-cpe:/a:debian:debian_linux:xen-hypervisor-4.1-amd64, p-cpe:/a:debian:debian_linux:xen-hypervisor-4.1-i386, p-cpe:/a:debian:debian_linux:xen-system-amd64, p-cpe:/a:debian:debian_linux:xen-system-i386, p-cpe:/a:debian:debian_linux:xen-utils-4.1, p-cpe:/a:debian:debian_linux:xen-utils-common, p-cpe:/a:debian:debian_linux:xenstore-utils, cpe:/o:debian:debian_linux:7.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/01/13

Reference Information

CVE: CVE-2016-10013, CVE-2016-10024

IAVB: 2017-B-0008