CVE-2016-3710
Vulnerability Summary
Timeline
Description
The VGA module in QEMU improperly performs bounds checking on banked access to video memory, which allows local guest OS administrators to execute arbitrary code on the host by changing access modes after setting the bank register, aka the "Dark Portal" issue.
CVSS Metrics
- v3.1•HIGH•Score: 8.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- v2.0•HIGH•Score: 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C
EPSS Trends
Current EPSS score: 0.07%• Percentile: 22%
Techniques & Countermeasures
- CWE-119•Improper Restriction of Operations within the Bounds of a Memory Buffer
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
Affected Systems
- canonical•ubuntu_linux
12.04 | 14.04 | 15.10 | 16.04
- citrix•xenserver
≤ 7.0
- debian•debian_linux
8.0
- hp•helion_openstack
2.0.0 | 2.1.0 | 2.1.2 | 2.1.4
- oracle•linux
5 | 6 | 7
- oracle•vm_server
3.2 | 3.3 | 3.4
- qemu•qemu
≤ 2.5.1 | 2.6.0:rc0 | 2.6.0:rc1 | 2.6.0:rc2 | 2.6.0:rc3 | 2.6.0:rc4
- redhat•enterprise_linux_desktop
6.0 | 7.0
- redhat•enterprise_linux_server
6.0 | 7.0
- redhat•enterprise_linux_server_aus
7.2 | 7.3 | 7.4 | 7.6
- redhat•enterprise_linux_server_eus
7.2 | 7.3 | 7.4 | 7.5 | 7.6 | 7.7
- redhat•enterprise_linux_server_tus
7.2 | 7.3 | 7.6 | 7.7
- redhat•enterprise_linux_workstation
6.0 | 7.0
- redhat•openstack
5.0 | 6.0 | 7.0 | 8
- redhat•virtualization
3.0
References (22)
- http://xenbits.xen.org/xsa/advisory-179.html
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://rhn.redhat.com/errata/RHSA-2016-0999.html
- http://www.securityfocus.com/bid/90316
- http://rhn.redhat.com/errata/RHSA-2016-0725.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- http://rhn.redhat.com/errata/RHSA-2016-1000.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
- http://support.citrix.com/article/CTX212736
- http://rhn.redhat.com/errata/RHSA-2016-1002.html
- http://rhn.redhat.com/errata/RHSA-2016-1001.html
- http://rhn.redhat.com/errata/RHSA-2016-0997.html
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05164862
- http://www.securitytracker.com/id/1035794
- http://rhn.redhat.com/errata/RHSA-2016-1943.html
- http://rhn.redhat.com/errata/RHSA-2016-1019.html
- http://www.ubuntu.com/usn/USN-2974-1
- http://www.openwall.com/lists/oss-security/2016/05/09/3
- http://rhn.redhat.com/errata/RHSA-2016-0724.html
- https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg01197.html
- https://access.redhat.com/errata/RHSA-2016:1224
- http://www.debian.org/security/2016/dsa-3573