CVE-2018-19967 — Improper Input Validation in XEN

CWE-20 — Improper Input Validation6 documents6 sources
Severity
6.5MEDIUMNVD
EPSS
0.1%
top 78.19%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
XENDebian XENDebian Linux
Timeline
PublishedDec 8
Latest updateMay 14

Description

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.

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:HExploitability: 2.0 | Impact: 4.0

Affected Packages3 packages

▶debiandebian/xen< xen 4.11.1-1 (bookworm)
▶Debianxen/xen< 4.11.1-1+3
▶NVDxen/xen4.11.1

Also affects: Debian Linux 9.0

Patches

Patch: xenbits.xen.org ↗Patch: xenbits.xen.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-qr6c-xrp9-38xv: An issue was discovered in Xen through 4↗2022-05-14
▶
OSV
CVE-2018-19967: An issue was discovered in Xen through 4↗2018-12-08
▶

📋Vendor Advisories

2
Red Hat
xen: guest use of HLE constructs may lock up host↗2018-11-06
▶
Debian
CVE-2018-19967: xen - An issue was discovered in Xen through 4.11.x on Intel x86 platforms allowing gu...↗2018
▶

💬Community

1
Bugzilla
CVE-2018-19967 xen: guest use of HLE constructs may lock up host↗2018-12-18
▶