CVE-2019-18425 is a critical privilege escalation vulnerability in Xen through version 4.12.x, affecting 32-bit PV guest operating systems, including Debian, Fedora, openSUSE, and Xen itself. It allows a 32-bit PV guest user to gain guest kernel privileges due to missing descriptor table limit checking during x86 PV emulation. The vulnerability has a CVSS score of 9.8 (Critical), indicating a network-exploitable flaw with low attack complexity and high impact on confidentiality, integrity, and availability. While no public exploit code or active exploitation has been observed, its high severity and potential for guest kernel compromise warrant immediate attention for affected systems.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 4.12.1CPE matchmatch criteria | cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | ||
29CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* | ||
30CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.