PT-2018-3390 · Xen+1 · Xen+1

Julien Grall · Published 2018-12-07 · Updated 2024-06-15 · CVE-2018-19963

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: Xen version 4.11

Description: The issue is related to mishandled x86 IOREQ server resource accounting for external emulators, which can be exploited by HVM guest OS users. This exploitation may cause a denial of service, resulting in a host OS crash, or possibly allow attackers to gain host OS privileges.

Recommendations: For Xen version 4.11, consider restricting access to external emulators to minimize the risk of exploitation until a patch is available. As a temporary workaround, disabling the external emulator functionality may help prevent the issue from being exploited.

Fix

DoS

Assertion Failure

Weakness Enumeration

CWE-617

Related Identifiers

BDU:2020-00737

CVE-2018-19963

OPENSUSE-SU-2024:11520-1

SUSE-SU-2019:0003-1

Affected Products

Suse

Xen

References · 122

• https://osv.dev/vulnerability/openSUSE-SU-2024:11520-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-19963 · Vendor Advisory
• https://xenbits.xen.org/xsa/advisory-276.html · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2018-19963 · Security Note
• https://osv.dev/vulnerability/CVE-2018-19963 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:0003-1 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2018-19963 · Vendor Advisory
• https://wiki.astralinux.ru/pages/viewpage.action?pageId=57444186 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-00737 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2018-19963 · Vendor Advisory
• https://suse.com/security/cve/CVE-2016-10025 · Note
• https://bugzilla.suse.com/1027519 · Note
• https://suse.com/security/cve/CVE-2020-29481 · Note
• https://bugzilla.suse.com/1115047 · Note
• https://suse.com/security/cve/CVE-2020-29570 · Note