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Vulnerability Details : CVE-2014-7156

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.
Publish Date : 2014-10-02 Last Update Date : 2018-10-30
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 264

- Related OVAL Definitions

Title Definition Id Class Family
DSA-3041-1 xen - security update oval:org.mitre.oval:def:26783 unix
SUSE-SU-2014:1318-1 -- Security update for Xen (moderate) oval:org.mitre.oval:def:28083 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2014-7156

# Product Type Vendor Product Version Update Edition Language
1 OS XEN XEN 3.3.0 * * * Version Details Vulnerabilities
2 OS XEN XEN 3.3.1 * * * Version Details Vulnerabilities
3 OS XEN XEN 3.3.2 * * * Version Details Vulnerabilities
4 OS XEN XEN 4.1.0 * * * Version Details Vulnerabilities
5 OS XEN XEN 4.1.1 * * * Version Details Vulnerabilities
6 OS XEN XEN 4.1.2 * * * Version Details Vulnerabilities
7 OS XEN XEN 4.1.3 * * * Version Details Vulnerabilities
8 OS XEN XEN 4.1.4 * * * Version Details Vulnerabilities
9 OS XEN XEN 4.1.5 * * * Version Details Vulnerabilities
10 OS XEN XEN * * * Version Details Vulnerabilities
11 OS XEN XEN 4.2.0 * * * Version Details Vulnerabilities
12 OS XEN XEN 4.2.1 * * * Version Details Vulnerabilities
13 OS XEN XEN 4.2.2 * * * Version Details Vulnerabilities
14 OS XEN XEN 4.2.3 * * * Version Details Vulnerabilities
15 OS XEN XEN 4.3.0 * * * Version Details Vulnerabilities
16 OS XEN XEN 4.3.1 * * * Version Details Vulnerabilities
17 OS XEN XEN 4.4.0 * * * Version Details Vulnerabilities
18 OS XEN XEN 4.4.0 RC1 * * Version Details Vulnerabilities
19 OS XEN XEN 4.4.1 - * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions

- References For CVE-2014-7156
BID 70062 Xen Supervisor Mode Permission Checks Local Denial of Service Vulnerability Release Date:2015-01-02
SECTRACK 1030889
SUSE openSUSE-SU-2014:1281
FEDORA FEDORA-2014-12000
FEDORA FEDORA-2014-12036
SUSE openSUSE-SU-2014:1279 CONFIRM
GENTOO GLSA-201412-42

- Metasploit Modules Related To CVE-2014-7156

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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