CVE-2019-19583

Published: Dic 11, 2019 Last Modified: Nov 21, 2024 EU-VD ID: EUVD-2019-9200 Aliases: GSD-2019-19583
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
MEDIUM 5,0
Source: [email protected]
Access Vector: network
Access Complexity: low
Authentication: none
Confidentiality: none
Integrity: none
Availability: partial

Description

AI Translation Available

An issue was discovered in Xen through 4.12.x allowing x86 HVM/PVH guest OS users to cause a denial of service (guest OS crash) because VMX VMEntry checks mishandle a certain case. Please see XSA-260 for background on the MovSS shadow. Please see XSA-156 for background on the need for #DB interception. The VMX VMEntry checks do not like the exact combination of state which occurs when #DB in intercepted, Single Stepping is active, and blocked by STI/MovSS is active, despite this being a legitimate state to be in. The resulting VMEntry failure is fatal to the guest. HVM/PVH guest userspace code may be able to crash the guest, resulting in a guest Denial of Service. All versions of Xen are affected. Only systems supporting VMX hardware virtual extensions (Intel, Cyrix, or Zhaoxin CPUs) are affected. Arm and AMD systems are unaffected. Only HVM/PVH guests are affected. PV guests cannot leverage the vulnerability.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0207
Percentile
0,8th
Updated

EPSS Score Trend (Last 90 Days)

Operating System

Debian Linux by Debian

Product Information
Vendor Debian
Product Debian Linux
Version 10.0
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Fedora by Fedoraproject

Product Information
Vendor Fedoraproject
Product Fedora
Version 31
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Fedora by Fedoraproject

Product Information
Vendor Fedoraproject
Product Fedora
Version 30
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Leap by Opensuse

Product Information
Vendor Opensuse
Product Leap
Version 15.1
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Debian Linux by Debian

Product Information
Vendor Debian
Product Debian Linux
Version 9.0
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Xen by Xen

Product Information
Vendor Xen
Product Xen
Version Range Affected
From 4.8.0 (inclusive)
To 4.12.1 (inclusive)
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
http://lists.opensuse.org/opensuse-security-announce/2020-0…
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00011.html
https://lists.fedoraproject.org/archives/list/package-annou…
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapr…
https://lists.fedoraproject.org/archives/list/package-annou…
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapr…
https://seclists.org/bugtraq/2020/Jan/21
Mailing List Third Party Advisory
https://seclists.org/bugtraq/2020/Jan/21
https://security.gentoo.org/glsa/202003-56
Third Party Advisory
https://security.gentoo.org/glsa/202003-56
https://www.debian.org/security/2020/dsa-4602
Third Party Advisory
https://www.debian.org/security/2020/dsa-4602
https://xenbits.xen.org/xsa/advisory-308.html
Patch Vendor Advisory
https://xenbits.xen.org/xsa/advisory-308.html
http://lists.opensuse.org/opensuse-security-announce/2020-0…
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00011.html
https://lists.fedoraproject.org/archives/list/package-annou…
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapr…
https://lists.fedoraproject.org/archives/list/package-annou…
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapr…
https://seclists.org/bugtraq/2020/Jan/21
Mailing List Third Party Advisory
https://seclists.org/bugtraq/2020/Jan/21
https://security.gentoo.org/glsa/202003-56
Third Party Advisory
https://security.gentoo.org/glsa/202003-56
https://www.debian.org/security/2020/dsa-4602
Third Party Advisory
https://www.debian.org/security/2020/dsa-4602
https://xenbits.xen.org/xsa/advisory-308.html
Patch Vendor Advisory
https://xenbits.xen.org/xsa/advisory-308.html