Debian DSA-3140-1 : xen - security update

High Nessus Plugin ID 81027

Synopsis

The remote Debian host is missing a security-related update.

Description

Multiple security issues have been discovered in the Xen virtualisation solution which may result in denial of service, information disclosure or privilege escalation.

- CVE-2014-8594 Roger Pau Monne and Jan Beulich discovered that incomplete restrictions on MMU update hypercalls may result in privilege escalation.

- CVE-2014-8595 Jan Beulich discovered that missing privilege level checks in the x86 emulation of far branches may result in privilege escalation.

- CVE-2014-8866 Jan Beulich discovered that an error in compatibility mode hypercall argument translation may result in denial of service.

- CVE-2014-8867 Jan Beulich discovered that an insufficient restriction in acceleration support for the 'REP MOVS' instruction may result in denial of service.

- CVE-2014-9030 Andrew Cooper discovered a page reference leak in MMU_MACHPHYS_UPDATE handling, resulting in denial of service.

Solution

Upgrade the xen packages.

For the stable distribution (wheezy), these problems have been fixed in version 4.1.4-3+deb7u4.

For the upcoming stable distribution (jessie), these problems have been fixed in version 4.4.1-4.

See Also

https://security-tracker.debian.org/tracker/CVE-2014-8594

https://security-tracker.debian.org/tracker/CVE-2014-8595

https://security-tracker.debian.org/tracker/CVE-2014-8866

https://security-tracker.debian.org/tracker/CVE-2014-8867

https://security-tracker.debian.org/tracker/CVE-2014-9030

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

https://www.debian.org/security/2015/dsa-3140

Plugin Details

Severity: High

ID: 81027

File Name: debian_DSA-3140.nasl

Version: 1.7

Type: local

Agent: unix

Published: 2015/01/28

Updated: 2020/03/12

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.1

Temporal Score: 5.3

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:xen, 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: 2015/01/27

Reference Information

CVE: CVE-2014-8594, CVE-2014-8595, CVE-2014-8866, CVE-2014-8867, CVE-2014-9030

BID: 71149, 71151, 71207, 71331, 71332

DSA: 3140