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Vulnerability Details : CVE-2014-7155

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 4.4.x and earlier does not properly check supervisor mode permissions, which allows local HVM users to cause a denial of service (guest crash) or gain guest kernel mode privileges via vectors involving an (1) HLT, (2) LGDT, (3) LIDT, or (4) LMSW instruction.
Publish Date : 2014-10-02 Last Update Date : 2018-10-30
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- CVSS Scores & Vulnerability Types

CVSS Score
5.8
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
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 ServiceGain privileges
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-2014-7155

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 7.0 Version Details Vulnerabilities
2 OS Fedoraproject Fedora 19 Version Details Vulnerabilities
3 OS Fedoraproject Fedora 20 Version Details Vulnerabilities
4 OS Opensuse Opensuse 12.3 Version Details Vulnerabilities
5 OS Opensuse Opensuse 13.1 Version Details Vulnerabilities
6 OS XEN XEN 3.0.2 Version Details Vulnerabilities
7 OS XEN XEN 3.0.3 Version Details Vulnerabilities
8 OS XEN XEN 3.0.4 Version Details Vulnerabilities
9 OS XEN XEN 3.1.3 Version Details Vulnerabilities
10 OS XEN XEN 3.1.4 Version Details Vulnerabilities
11 OS XEN XEN 3.2.0 Version Details Vulnerabilities
12 OS XEN XEN 3.2.1 Version Details Vulnerabilities
13 OS XEN XEN 3.2.2 Version Details Vulnerabilities
14 OS XEN XEN 3.2.3 Version Details Vulnerabilities
15 OS XEN XEN 3.3.0 Version Details Vulnerabilities
16 OS XEN XEN 3.3.1 Version Details Vulnerabilities
17 OS XEN XEN 3.3.2 Version Details Vulnerabilities
18 OS XEN XEN 3.4.0 Version Details Vulnerabilities
19 OS XEN XEN 3.4.1 Version Details Vulnerabilities
20 OS XEN XEN 3.4.2 Version Details Vulnerabilities
21 OS XEN XEN 3.4.3 Version Details Vulnerabilities
22 OS XEN XEN 3.4.4 Version Details Vulnerabilities
23 OS XEN XEN 4.0.0 Version Details Vulnerabilities
24 OS XEN XEN 4.0.1 Version Details Vulnerabilities
25 OS XEN XEN 4.0.2 Version Details Vulnerabilities
26 OS XEN XEN 4.0.3 Version Details Vulnerabilities
27 OS XEN XEN 4.0.4 Version Details Vulnerabilities
28 OS XEN XEN 4.1.0 Version Details Vulnerabilities
29 OS XEN XEN 4.1.1 Version Details Vulnerabilities
30 OS XEN XEN 4.1.2 Version Details Vulnerabilities
31 OS XEN XEN 4.1.3 Version Details Vulnerabilities
32 OS XEN XEN 4.1.4 Version Details Vulnerabilities
33 OS XEN XEN 4.1.5 Version Details Vulnerabilities
34 OS XEN XEN 4.1.6.1 Version Details Vulnerabilities
35 OS XEN XEN 4.2.0 Version Details Vulnerabilities
36 OS XEN XEN 4.2.1 Version Details Vulnerabilities
37 OS XEN XEN 4.2.2 Version Details Vulnerabilities
38 OS XEN XEN 4.2.3 Version Details Vulnerabilities
39 OS XEN XEN 4.3.0 Version Details Vulnerabilities
40 OS XEN XEN 4.3.1 Version Details Vulnerabilities
41 OS XEN XEN 4.4.0 Version Details Vulnerabilities
42 OS XEN XEN 4.4.0 RC1 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 1
Fedoraproject Fedora 2
Opensuse Opensuse 2
XEN XEN 37

- References For CVE-2014-7155

http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html
SUSE openSUSE-SU-2014:1281
http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140418.html
FEDORA FEDORA-2014-12036
http://www.debian.org/security/2014/dsa-3041
DEBIAN DSA-3041
http://www.securitytracker.com/id/1030888
SECTRACK 1030888
http://xenbits.xen.org/xsa/advisory-105.html CONFIRM
http://www.securityfocus.com/bid/70057
BID 70057 Xen 'x86_emulate.c' Local Privilege Escalation Vulnerability Release Date:2015-01-02
http://secunia.com/advisories/61890
SECUNIA 61890
http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140483.html
FEDORA FEDORA-2014-12000
http://support.citrix.com/article/CTX200218 CONFIRM
http://security.gentoo.org/glsa/glsa-201412-42.xml
GENTOO GLSA-201412-42
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html
SUSE openSUSE-SU-2014:1279

- Metasploit Modules Related To CVE-2014-7155

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


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