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6.0
MEDIUM CVSS 3.1
CVE-2016-6836
QEMU vmxnet3 Memory Information Disclosure Vulnerability
Description

The vmxnet3_complete_packet function in hw/net/vmxnet3.c in QEMU (aka Quick Emulator) allows local guest OS administrators to obtain sensitive host memory information by leveraging failure to initialize the txcq_descr object.

INFO

Published Date :

Dec. 10, 2016, 12:59 a.m.

Last Modified :

April 12, 2025, 10:46 a.m.

Remotely Exploit :

No

Source :

[email protected]
Affected Products

The following products are affected by CVE-2016-6836 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Debian debian_linux
1 Qemu qemu
: Total Affected Vendor : 2 | Products : 2
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 LOW [email protected]
CVSS 3.1 MEDIUM [email protected]
Solution
Update QEMU and Xen packages to address a memory information disclosure vulnerability.
  • Update the affected QEMU packages to the latest versions.
  • Update the affected xen packages to the latest versions.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2016-6836.

URL Resource
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=fdda170e50b8af062cf5741e12c4fb5e57a2eacf
http://www.openwall.com/lists/oss-security/2016/08/11/5 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/08/18/5 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/92444 Third Party Advisory VDB Entry
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html Mailing List Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg02108.html Patch Third Party Advisory
https://security.gentoo.org/glsa/201609-01 Third Party Advisory
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=fdda170e50b8af062cf5741e12c4fb5e57a2eacf
http://www.openwall.com/lists/oss-security/2016/08/11/5 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/08/18/5 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/92444 Third Party Advisory VDB Entry
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html Mailing List Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg02108.html Patch Third Party Advisory
https://security.gentoo.org/glsa/201609-01 Third Party Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2016-6836 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2016-6836 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2016-6836 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2016-6836 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=fdda170e50b8af062cf5741e12c4fb5e57a2eacf
    Added Reference http://www.openwall.com/lists/oss-security/2016/08/11/5
    Added Reference http://www.openwall.com/lists/oss-security/2016/08/18/5
    Added Reference http://www.securityfocus.com/bid/92444
    Added Reference https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
    Added Reference https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg02108.html
    Added Reference https://security.gentoo.org/glsa/201609-01
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Feb. 12, 2023

    Action Type Old Value New Value
    Removed Reference http://git.qemu.org/?p=qemu.git;a=commit;h=fdda170e50b8af062cf5741e12c4fb5e57a2eacf [Patch, Vendor Advisory]
    Added Reference http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=fdda170e50b8af062cf5741e12c4fb5e57a2eacf [No Types Assigned]
  • Modified Analysis by [email protected]

    Oct. 15, 2020

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
    Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
    Changed Reference Type http://git.qemu.org/?p=qemu.git;a=commit;h=fdda170e50b8af062cf5741e12c4fb5e57a2eacf Issue Tracking, Patch http://git.qemu.org/?p=qemu.git;a=commit;h=fdda170e50b8af062cf5741e12c4fb5e57a2eacf Patch, Vendor Advisory
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html No Types Assigned https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html Mailing List, Third Party Advisory
    Changed Reference Type https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg02108.html Patch, Vendor Advisory https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg02108.html Patch, Third Party Advisory
    Changed Reference Type https://security.gentoo.org/glsa/201609-01 No Types Assigned https://security.gentoo.org/glsa/201609-01 Third Party Advisory
    Removed CWE NIST CWE-200
    Added CWE NIST CWE-665
    Changed CPE Configuration OR *cpe:2.3:a:qemu:qemu:-:*:*:*:*:*:*:* OR *cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* versions up to (including) 2.7.1
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Dec. 01, 2018

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 01, 2017

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/201609-01 [No Types Assigned]
  • Initial Analysis by [email protected]

    Dec. 12, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:a:qemu:qemu:-:*:*:*:*:*:*:*
    Added CVSS V2 (AV:L/AC:L/Au:N/C:P/I:N/A:N)
    Added CVSS V3 AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
    Changed Reference Type http://www.openwall.com/lists/oss-security/2016/08/18/5 No Types Assigned http://www.openwall.com/lists/oss-security/2016/08/18/5 Third Party Advisory, Mailing List
    Changed Reference Type http://www.openwall.com/lists/oss-security/2016/08/11/5 No Types Assigned http://www.openwall.com/lists/oss-security/2016/08/11/5 Third Party Advisory, Mailing List
    Changed Reference Type https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg02108.html No Types Assigned https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg02108.html Vendor Advisory, Patch
    Changed Reference Type http://git.qemu.org/?p=qemu.git;a=commit;h=fdda170e50b8af062cf5741e12c4fb5e57a2eacf No Types Assigned http://git.qemu.org/?p=qemu.git;a=commit;h=fdda170e50b8af062cf5741e12c4fb5e57a2eacf Issue Tracking, Patch
    Changed Reference Type http://www.securityfocus.com/bid/92444 No Types Assigned http://www.securityfocus.com/bid/92444 Third Party Advisory, VDB Entry
    Added CWE CWE-200
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 6
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 2.1
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.11 }} -0.15%

score

0.26591

percentile