Improper input validation in Xen
CVE-2018-19967
An issue was discovered in Xen through 4.11.x on Intel x86 platforms allowing guest OS users to cause a denial of service (host OS hang) because Xen does not work around Intel's mishandling of certain HLE transactions associated with the KACQUIRE instruction prefix.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (36.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.9% 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
- Xen
- Debian Linux — versions 9.0
Weakness classification (CWE)
References
- xenbits.xen.org/xsa/advisory-282.html (Patch, Vendor Advisory)
- support.citrix.com/article/CTX239432 (Third Party Advisory)
- www.debian.org/security/2019/dsa-4369 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/106182 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00057.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html (vendor-advisory)
Frequently asked questions
- What is CVE-2018-19967?
- CVE-2018-19967 is a medium-severity vulnerability in Xen, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2018-12-08.
- How severe is CVE-2018-19967?
- Medium severity. CVSS v3 base score is 6.5 out of 10.