NULL pointer dereference in Xen
CVE-2018-18883
An issue was discovered in Xen 4.9.x through 4.11.x, on Intel x86 platforms, allowing x86 HVM and PVH guests to cause a host OS denial of service (NULL pointer dereference) or possibly have unspecified other impact because nested VT-x is not properly restricted.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (35.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.5% 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
Weakness classification (CWE)
References
- xenbits.xen.org/xsa/advisory-278.html (Patch, Mitigation, Vendor Advisory)
- www.securitytracker.com/id/1042021 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securityfocus.com/bid/105817 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2018-18883?
- CVE-2018-18883 is a high-severity vulnerability in Xen, classified under NULL Pointer Dereference. CVSS score: 8.8/10. Published 2018-11-01.
- How severe is CVE-2018-18883?
- High severity. CVSS v3 base score is 8.8 out of 10.