Vulnerability in Oracle Vm Server
CVE-2016-4480
The guest_walk_tables function in arch/x86/mm/guest_walk.c in Xen 4.6.x and earlier does not properly handle the Page Size (PS) page table entry bit at the L4 and L3 page table levels, which might allow local guest OS users to gain privileges via a crafted mapping of memory.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (43.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Oracle Vm Server — versions 3.2, 3.3, 3.4
- Xen
Weakness classification (CWE)
References
- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html (Vendor Advisory)
- www.securityfocus.com/bid/90710 (vdb-entry)
- www.securitytracker.com/id/1035901 (vdb-entry)
- www.debian.org/security/2016/dsa-3633 (vendor-advisory)
- xenbits.xen.org/xsa/advisory-176.html (Vendor Advisory)
Frequently asked questions
- What is CVE-2016-4480?
- CVE-2016-4480 is a high-severity vulnerability in Oracle Vm Server, classified under CWE-264. CVSS score: 8.4/10. Published 2016-05-18.
- How severe is CVE-2016-4480?
- High severity. CVSS v3 base score is 8.4 out of 10.