Executive Summary

Informations
Name CVE-2016-4020 First vendor Publication 2016-05-25
Vendor Cve Last vendor Modification 2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Overall CVSS Score 6.5
Base Score 6.5 Environmental Score 6.5
impact SubScore 4 Temporal Score 6.5
Exploitabality Sub Score 2
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Changed Confidentiality Impact High
Integrity Impact None Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:P/I:N/A:N)
Cvss Base Score 2.1 Attack Range Local
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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).

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4020

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 152
Application 6
Os 4
Os 1
Os 1
Os 4
Os 1
Os 3
Os 2
Os 1

Nessus® Vulnerability Scanner

Date Description
2018-12-01 Name : The remote Debian host is missing a security update.
File : debian_DLA-1599.nasl - Type : ACT_GATHER_INFO
2017-09-11 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2017-1224.nasl - Type : ACT_GATHER_INFO
2017-09-11 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2017-1223.nasl - Type : ACT_GATHER_INFO
2017-08-25 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2017-1856.nasl - Type : ACT_GATHER_INFO
2017-08-22 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20170801_qemu_kvm_on_SL7_x.nasl - Type : ACT_GATHER_INFO
2017-08-09 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-1856.nasl - Type : ACT_GATHER_INFO
2017-08-03 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-2392.nasl - Type : ACT_GATHER_INFO
2017-08-03 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-1856.nasl - Type : ACT_GATHER_INFO
2016-10-26 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-2533-1.nasl - Type : ACT_GATHER_INFO
2016-10-12 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-1170.nasl - Type : ACT_GATHER_INFO
2016-10-12 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-1169.nasl - Type : ACT_GATHER_INFO
2016-09-26 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201609-01.nasl - Type : ACT_GATHER_INFO
2016-09-02 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-2100-1.nasl - Type : ACT_GATHER_INFO
2016-09-02 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-2093-1.nasl - Type : ACT_GATHER_INFO
2016-08-29 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-1785-1.nasl - Type : ACT_GATHER_INFO
2016-08-29 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-1703-1.nasl - Type : ACT_GATHER_INFO
2016-08-29 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-1698-1.nasl - Type : ACT_GATHER_INFO
2016-08-01 Name : The remote Debian host is missing a security update.
File : debian_DLA-573.nasl - Type : ACT_GATHER_INFO
2016-07-14 Name : The remote Fedora host is missing a security update.
File : fedora_2016-f13ea849c5.nasl - Type : ACT_GATHER_INFO
2016-07-14 Name : The remote Fedora host is missing a security update.
File : fedora_2016-d3a56228f5.nasl - Type : ACT_GATHER_INFO
2016-07-14 Name : The remote Fedora host is missing a security update.
File : fedora_2016-07eca37ea0.nasl - Type : ACT_GATHER_INFO
2016-07-12 Name : The remote Debian host is missing a security update.
File : debian_DLA-574.nasl - Type : ACT_GATHER_INFO
2016-07-08 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-839.nasl - Type : ACT_GATHER_INFO
2016-06-17 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-1560-1.nasl - Type : ACT_GATHER_INFO
2016-05-13 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2974-1.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=691a02e2ce0c413236a78dee6f2651...
http://www.securityfocus.com/bid/86067
http://www.ubuntu.com/usn/USN-2974-1
https://access.redhat.com/errata/RHSA-2017:1856
https://access.redhat.com/errata/RHSA-2017:2392
https://access.redhat.com/errata/RHSA-2017:2408
https://bugzilla.redhat.com/show_bug.cgi?id=1313686
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg01106.html
https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg01118.html
https://security.gentoo.org/glsa/201609-01
Source Url

Alert History

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Date Informations
2024-11-28 12:55:49
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2023-08-12 12:40:06
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2023-03-29 01:35:54
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2023-03-28 12:10:53
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2023-02-13 09:27:57
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2023-02-02 21:28:16
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2022-10-11 12:30:31
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2022-10-11 01:10:34
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2021-08-04 21:23:28
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2021-05-05 01:21:46
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2021-05-04 12:49:37
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2021-04-22 02:01:18
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2020-11-03 12:15:40
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2020-10-16 00:22:40
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2020-05-23 00:50:54
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2018-12-01 17:18:57
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2018-01-05 09:23:40
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2017-09-12 13:25:00
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2017-08-26 13:24:55
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2017-08-23 13:25:04
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2017-08-10 13:25:16
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2017-08-04 13:25:03
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2017-07-01 09:23:26
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2016-11-29 00:26:11
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2016-10-27 13:26:38
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2016-10-13 13:25:06
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2016-09-27 13:24:48
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2016-09-03 13:27:33
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2016-08-30 13:21:28
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2016-07-18 13:25:14
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2016-07-09 13:25:57
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2016-06-22 05:26:57
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2016-06-21 09:27:22
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2016-06-18 13:27:58
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2016-06-01 21:24:01
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2016-05-29 09:25:03
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2016-05-26 00:24:31
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2016-05-25 21:27:06
  • First insertion