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Vulnerability Details : CVE-2014-8134

The paravirt_ops_setup function in arch/x86/kernel/kvm.c in the Linux kernel through 3.18 uses an improper paravirt_enabled setting for KVM guest kernels, which makes it easier for guest OS users to bypass the ASLR protection mechanism via a crafted application that reads a 16-bit value.
Publish Date : 2014-12-12 Last Update Date : 2020-08-14
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- CVSS Scores & Vulnerability Types

CVSS Score
1.9
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Bypass a restriction or similar
CWE ID CWE id is not defined for this vulnerability

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2016:0855: kernel security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20160855 unix
USN-2441-1 -- Linux kernel vulnerabilities oval:org.mitre.oval:def:28705 unix
USN-2442-1 -- Linux kernel (EC2) vulnerabilities oval:org.mitre.oval:def:28519 unix
USN-2443-1 -- Linux kernel vulnerabilities oval:org.mitre.oval:def:28491 unix
USN-2444-1 -- Linux kernel (OMAP4) vulnerabilities oval:org.mitre.oval:def:28567 unix
USN-2445-1 -- Linux kernel (Trusty HWE) vulnerabilities oval:org.mitre.oval:def:27732 unix
USN-2446-1 -- Linux kernel vulnerabilities oval:org.mitre.oval:def:28504 unix
USN-2447-1 -- Linux kernel (Utopic HWE) vulnerabilities oval:org.mitre.oval:def:28556 unix
USN-2447-2 -- Linux kernel (Utopic HWE) regression oval:org.mitre.oval:def:27960 unix
USN-2448-1 -- Linux kernel vulnerabilities oval:org.mitre.oval:def:28611 unix
USN-2448-2 -- Linux kernel regression oval:org.mitre.oval:def:28608 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-2014-8134

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 12.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 14.04 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
4 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
5 OS Opensuse Evergreen 11.4 * * * Version Details Vulnerabilities
6 OS Opensuse Opensuse 13.1 * * * Version Details Vulnerabilities
7 OS Oracle Linux 6 - * * Version Details Vulnerabilities
8 OS Suse Suse Linux Enterprise Server 11 SP2 * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 3
Linux Linux Kernel 1
Opensuse Evergreen 1
Opensuse Opensuse 1
Oracle Linux 1
Suse Suse Linux Enterprise Server 1

- References For CVE-2014-8134

http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html
SUSE SUSE-SU-2015:0481
http://www.securityfocus.com/bid/71650
BID 71650 Linux Kernel 'kernel/kvm.c' Local Information Disclosure Vulnerability Release Date:2015-01-15
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html
SUSE openSUSE-SU-2015:0714
http://www.spinics.net/lists/kvm/msg111458.html
MLIST [kvm] 20141205 [PATCH] x86, kvm: Clear paravirt_enabled on KVM guests for espfix32's benefit
https://bugzilla.novell.com/show_bug.cgi?id=909078 CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=1172765 CONFIRM
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html CONFIRM
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
SUSE openSUSE-SU-2015:0566
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
SUSE SUSE-SU-2015:0736
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1400314 CONFIRM
http://secunia.com/advisories/62336
SECUNIA 62336
http://rhn.redhat.com/errata/RHSA-2016-0855.html
REDHAT RHSA-2016:0855
http://people.canonical.com/~ubuntu-security/cve/2014/CVE-2014-8134.html CONFIRM
https://support.f5.com/csp/article/K17120 CONFIRM
https://support.f5.com/csp/article/K17120?utm_source=f5support&utm_medium=RSS CONFIRM

- Metasploit Modules Related To CVE-2014-8134

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


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