Buffer overflow in Citrix Xenserver
CVE-2016-3710
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (59.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Citrix Xenserver
- HP Helion OpenStack — versions 2.0.0, 2.1.0, 2.1.2
- Oracle Linux — versions 5, 6, 7
- Oracle Vm Server — versions 3.2, 3.3, 3.4
- Qemu — versions 2.6.0
- Canonical Ubuntu Linux — versions 12.04, 14.04, 15.10
- Debian Linux — versions 8.0
- Red Hat Enterprise Linux Desktop — versions 6.0, 7.0
- Red Hat Enterprise Linux Server — versions 6.0, 7.0
- Red Hat Enterprise Linux Server Aus — versions 7.2, 7.3, 7.4
Weakness classification (CWE)
References
- xenbits.xen.org/xsa/advisory-179.html (Third Party Advisory)
- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html (Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-0999.html (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/90316 (VDB Entry, Third Party Advisory, vdb-entry)
- rhn.redhat.com/errata/RHSA-2016-0725.html (vendor-advisory, Third Party Advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html (Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-1000.html (vendor-advisory, Third Party Advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html (Third Party Advisory)
- support.citrix.com/article/CTX212736 (Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-1002.html (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-3710?
- CVE-2016-3710 is a high-severity vulnerability in Citrix Xenserver, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2016-05-11.
- How severe is CVE-2016-3710?
- High severity. CVSS v3 base score is 8.8 out of 10.