Improper input validation in Citrix Xenserver
CVE-2016-9385
The x86 segment base write emulation functionality in Xen 4.4.x through 4.7.x allows local x86 PV guest OS administrators to cause a denial of service (host crash) by leveraging lack of canonical address checks.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (35.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Citrix Xenserver — versions 6.0.2, 6.2.0, 6.5
- Xen — versions 4.4.0, 4.4.1, 4.4.2
Weakness classification (CWE)
References
- security.gentoo.org/glsa/201612-56 (vendor-advisory)
- www.securityfocus.com/bid/94472 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1037342 (VDB Entry, Third Party Advisory, vdb-entry)
- support.citrix.com/article/CTX218775 (Patch, VDB Entry, Third Party Advisory)
- xenbits.xen.org/xsa/advisory-193.html (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2016-9385?
- CVE-2016-9385 is a medium-severity vulnerability in Citrix Xenserver, classified under Improper Input Validation. CVSS score: 6.0/10. Published 2017-01-23.
- How severe is CVE-2016-9385?
- Medium severity. CVSS v3 base score is 6.0 out of 10.