Vulnerability CVE-2014-8134
Published: 2014-12-12

Description:
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.

See advisories in our WLB2 database:
Topic
Author
Date
High
Linux Kernel 3.2 multiple x86_64 vulnerabilities
Andy Lutomirski
16.12.2014

Type:

CWE-17

 (Code)

CVSS2 => (AV:L/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
2.1/10
2.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Linux -> Linux kernel 

 References:
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
http://people.canonical.com/~ubuntu-security/cve/2014/CVE-2014-8134.html
http://rhn.redhat.com/errata/RHSA-2016-0855.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://www.securityfocus.com/bid/71650
http://www.spinics.net/lists/kvm/msg111458.html
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1400314
https://bugzilla.novell.com/show_bug.cgi?id=909078
https://bugzilla.redhat.com/show_bug.cgi?id=1172765
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