Vulnerability in Xen
CVE-2018-19966
An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because of an interpretation conflict for a union data structure associated with shadow paging. NOTE: this issue exists because of an incorrect fix for CVE-2017-15595.
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 (35.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.6% 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
- Xen
- Debian Linux — versions 9.0
Weakness classification (CWE)
References
- www.debian.org/security/2019/dsa-4369 (vendor-advisory, Third Party Advisory)
- xenbits.xen.org/xsa/advisory-280.html (Patch, Mitigation, Vendor Advisory)
- www.securityfocus.com/bid/106182 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html (vendor-advisory)
- lists.debian.org/debian-lts-announce/2019/10/msg00008.html (mailing-list)
Frequently asked questions
- What is CVE-2018-19966?
- CVE-2018-19966 is a high-severity vulnerability in Xen, classified under CWE-436. CVSS score: 8.8/10. Published 2018-12-08.
- How severe is CVE-2018-19966?
- High severity. CVSS v3 base score is 8.8 out of 10.