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cve[email protected]CVE-2016-4020
HistoryMay 25, 2016 - 3:59 p.m.

CVE-2016-4020

2016-05-2515:59:04
[email protected]
web.nvd.nist.gov
56
cve-2016-4020
qemu
information security
vulnerability
kvm
memory access

2.1 Low

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

6.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

6.4 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

25.5%

JSON

The patch_instruction function in hw/i386/kvmvapic.c in QEMU does not initialize the imm32 variable, which allows local guest OS administrators to obtain sensitive information from host stack memory by accessing the Task Priority Register (TPR).

Affected configurations

NVD
Node
qemuqemuRange≤2.6.2
Node
canonicalubuntu_linuxMatch12.04esm
OR
canonicalubuntu_linuxMatch14.04esm
OR
canonicalubuntu_linuxMatch15.10
OR
canonicalubuntu_linuxMatch16.04lts
Node
debiandebian_linuxMatch8.0
Node
redhatopenstackMatch6.0
OR
redhatopenstackMatch7.0
OR
redhatopenstackMatch8
OR
redhatopenstackMatch9
OR
redhatopenstackMatch10
OR
redhatopenstackMatch11
OR
redhatenterprise_linux_desktopMatch7.0
OR
redhatenterprise_linux_eusMatch7.4
OR
redhatenterprise_linux_eusMatch7.5
OR
redhatenterprise_linux_eusMatch7.6
OR
redhatenterprise_linux_eusMatch7.7
OR
redhatenterprise_linux_serverMatch7.0
OR
redhatenterprise_linux_server_ausMatch7.4
OR
redhatenterprise_linux_server_ausMatch7.6
OR
redhatenterprise_linux_server_ausMatch7.7
OR
redhatenterprise_linux_server_tusMatch7.6
OR
redhatenterprise_linux_server_tusMatch7.7
OR
redhatenterprise_linux_workstationMatch7.0
Node
redhatvirtualizationMatch4.0
AND
redhatenterprise_linuxMatch7.0
CPENameOperatorVersion
qemu:qemuqemule2.6.2

Related

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osv 3
debian 3
oraclelinux 1
ubuntu 1
mageia 1
ibm 1
gentoo 1
suse 10
veracode
veracode
Information Disclosure
2019-05-02 06:36:18
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Fedora Update for qemu FEDORA-2016-07eca37ea0
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RedHat Update for qemu-kvm RHSA-2017:1856-01
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centos
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qemu security update
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nessus
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Fedora 23 : 2:qemu (2016-07eca37ea0)
2016-07-14 00:00:00
CentOS 7 : qemu-kvm (CESA-2017:1856)
2017-08-25 00:00:00
Fedora 22 : 2:qemu (2016-d3a56228f5)
2016-07-14 00:00:00
fedora
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[SECURITY] Fedora 24 Update: qemu-2.6.0-3.fc24
2016-05-29 17:51:50
[SECURITY] Fedora 23 Update: qemu-2.4.1-10.fc23
2016-05-31 02:54:37
[SECURITY] Fedora 22 Update: qemu-2.3.1-15.fc22
2016-06-07 01:22:27
redhat
redhat
(RHSA-2017:1856) Moderate: qemu-kvm security, bug fix, and enhancement update
2017-08-01 05:55:25
(RHSA-2017:2392) Important: qemu-kvm-rhev security, bug fix, and enhancement update
2017-08-01 15:48:43
(RHSA-2017:2408) Moderate: qemu-kvm-rhev security and bug fix update
2017-08-01 20:47:32
osv
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qemu-kvm - security update
2016-07-30 00:00:00
qemu - security update
2016-07-30 00:00:00
qemu - security update
2018-11-29 00:00:00
debian
debian
[SECURITY] [DLA 573-1] qemu security update
2016-07-30 10:22:30
[SECURITY] [DLA 574-1] qemu-kvm security update
2016-07-30 10:43:04
[SECURITY] [DLA 1599-1] qemu security update
2018-11-30 14:28:32
oraclelinux
oraclelinux
qemu-kvm security, bug fix, and enhancement update
2017-08-07 00:00:00
ubuntu
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QEMU vulnerabilities
2016-05-12 00:00:00
mageia
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Updated qemu packages fix security vulnerabilities
2016-05-18 23:14:22
ibm
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Security Bulletin: Multiple vulnerabilities in qemu affect PowerKVM
2018-06-18 01:33:29
gentoo
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QEMU: Multiple vulnerabilities
2016-09-25 00:00:00
suse
suse
Security update for xen (important)
2016-08-17 18:08:50
Security update for xen (important)
2016-08-18 18:09:54
Security update for kvm (important)
2016-07-11 16:39:09

2.1 Low

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

6.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

6.4 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

25.5%

JSON
Related for CVE-2016-4020
veracode1cvelist1prion1nvd1ubuntucve1debiancve1openvas22centos1nessus27fedora3redhat3osv3debian3oraclelinux1ubuntu1mageia1ibm1gentoo1suse10