Home/CVE/The VGA module in QEMU improperly performs bounds checking on banked access to video memory, which allows local guest OS
CVE

CVE-2016-3710

The VGA module in QEMU improperly performs bounds checking on banked access to video memory, which allows local guest OS

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.

HIGH · CVSS 8.8 EPSS 0.00073
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules10 YARA rules0
⬡

Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
▤

Affected Products & Versions

16
debian linuxall versions
hp helion openstackall versions
canonical ubuntu linuxall versions
qemu<= 2.5.1
qemuall versions
oracle vm serverall versions
oracle linuxall versions
citrix xenserver<= 7.0
◈

Sigma Hunt Rules

10
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPotentially Suspicious Usage Of Qemu
productmediumPowershell Detect Virtualization Environment
productcriticalLinux Reverse Shell Indicator
producthighCommunication To LocaltoNet Tunneling Service Initiated - Linux
producthighPotentially Suspicious Malware Callback Communication - Linux
producthighLinux Crypto Mining Pool Connections
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD11 May 2016 · 09:59 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
⚑

Vendor Advisories

20
suse-csafSUSE-SU-2016:2725-1
suse-csafSUSE-SU-2016:2528-1
suse-csafSUSE-SU-2016:2533-1
suse-csafSUSE-SU-2016:2100-1
suse-csafSUSE-SU-2016:2093-1
🔗

References & Sources

21
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://rhn.redhat.com/errata/RHSA-2016-0724.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0725.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0997.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0999.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-1000.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-1001.htmlThird Party Advisory
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