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Vulnerability Details : CVE-2016-6833

Use-after-free vulnerability in the vmxnet3_io_bar0_write function in hw/net/vmxnet3.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (QEMU instance crash) by leveraging failure to check if the device is active.
Publish Date : 2016-12-10 Last Update Date : 2020-10-15
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- CVSS Scores & Vulnerability Types

CVSS Score
2.1
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 416

- Products Affected By CVE-2016-6833

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 8.0 * * * Version Details Vulnerabilities
2 Application Qemu Qemu * * * * Version Details Vulnerabilities
3 Application Qemu Qemu 2.7.0 RC0 * * Version Details Vulnerabilities
4 Application Qemu Qemu 2.7.0 RC1 * * Version Details Vulnerabilities
5 Application Qemu Qemu 2.7.0 RC2 * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 1
Qemu Qemu 4

- References For CVE-2016-6833

http://www.securityfocus.com/bid/93255
BID 93255 Qemu CVE-2016-6833 Use After Free Memory Denial of Service Vulnerability Release Date:2016-10-03
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
MLIST [debian-lts-announce] 20180906 [SECURITY] [DLA 1497-1] qemu security update
http://git.qemu.org/?p=qemu.git;a=commit;h=6c352ca9b4ee3e1e286ea9e8434bd8e69ac7d0d8 CONFIRM
https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg01602.html
MLIST [qemu-devel] 20160809 [PULL 2/3] net: vmxnet3: check for device_active before write
http://www.openwall.com/lists/oss-security/2016/08/12/1
MLIST [oss-security] 20160812 CVE request: Qemu net: vmxnet3: use after free while writing
https://security.gentoo.org/glsa/201609-01
GENTOO GLSA-201609-01
http://www.openwall.com/lists/oss-security/2016/08/18/3
MLIST [oss-security] 20160817 Re: CVE request: Qemu net: vmxnet3: use after free while writing

- Metasploit Modules Related To CVE-2016-6833

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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