CVE-2016-3713

high
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Description

The msr_mtrr_valid function in arch/x86/kvm/mtrr.c in the Linux kernel before 4.6.1 supports MSR 0x2f8, which allows guest OS users to read or write to the kvm_arch_vcpu data structure, and consequently obtain sensitive information or cause a denial of service (system crash), via a crafted ioctl call.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9842df62004f366b9fed2423e24df10542ee0dc5

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.1

http://www.openwall.com/lists/oss-security/2016/05/16/2

https://bugzilla.redhat.com/show_bug.cgi?id=1332139

https://github.com/torvalds/linux/commit/9842df62004f366b9fed2423e24df10542ee0dc5

Details

Source: MITRE

Published: 2016-06-27

Updated: 2016-06-27

Type: CWE-284

Risk Information

CVSS v2

Base Score: 5.6

Vector: AV:L/AC:L/Au:N/C:P/I:N/A:C

Impact Score: 7.8

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Impact Score: 5.2

Exploitability Score: 1.8

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to 4.6 (inclusive)

Tenable Plugins

View all (13 total)

IDNameProductFamilySeverity
127146NewStart CGSL MAIN 5.04 : kernel Multiple Vulnerabilities (NS-SA-2019-0004)NessusNewStart CGSL Local Security Checks
critical
124974EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1521)NessusHuawei Local Security Checks
critical
124953EulerOS Virtualization 3.0.1.0 : kvm (EulerOS-SA-2019-1450)NessusHuawei Local Security Checks
high
119567Oracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2018-4301)NessusOracle Linux Local Security Checks
high
119535Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4300)NessusOracle Linux Local Security Checks
high
102511Oracle Linux 7 : kernel (ELSA-2017-1842-1) (Stack Clash)NessusOracle Linux Local Security Checks
critical
92211Fedora 24 : kernel (2016-f8739a80b0)NessusFedora Local Security Checks
high
92067Fedora 22 : kernel (2016-2363b37a98)NessusFedora Local Security Checks
high
92055Fedora 23 : kernel (2016-06f1572324)NessusFedora Local Security Checks
high
91189Ubuntu 14.04 LTS : linux-lts-xenial vulnerabilities (USN-2979-2)NessusUbuntu Local Security Checks
high
91188Ubuntu 16.04 LTS : linux vulnerabilities (USN-2979-1)NessusUbuntu Local Security Checks
high
91186Ubuntu 14.04 LTS : linux-lts-wily vulnerabilities (USN-2978-2)NessusUbuntu Local Security Checks
high
91185Ubuntu 15.10 : linux vulnerabilities (USN-2978-1)NessusUbuntu Local Security Checks
high