CVE-2018-19965

Debian Security Advisory 4369-1

Severity Score

5.6

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in Xen through 4.11.x allowing 64-bit PV guest OS users to cause a denial of service (host OS crash) because #GP[0] can occur after a non-canonical address is passed to the TLB flushing code. NOTE: this issue exists because of an incorrect CVE-2017-5754 (aka Meltdown) mitigation.

Se ha descubierto un problema en Xen 4.11.x que permite que usuarios PV invitados del sistema operativo de 64 bits provoquen una denegación de servicio (cierre inesperado del sistema operativo del host) debido a que puede ocurrir un #GP[0] tras pasar una dirección no canónica al código de vaciado TLB. NOTA: este problema existe debido a una mitigación incorrecta de CVE-2017-5754 (también conocido como Meltdown).

Multiple vulnerabilities have been discovered in the Xen hypervisor.

*Credits: N/A

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-12-07 CVE Reserved
2018-12-08 CVE Published
2024-08-05 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (6)

URL	Tag	Source
http://www.securityfocus.com/bid/106182	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://support.citrix.com/article/CTX239432	2023-11-07
https://xenbits.xen.org/xsa/advisory-279.html	2023-11-07

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT	2023-11-07
https://www.debian.org/security/2019/dsa-4369	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				<= 4.11.1 Search vendor "Xen" for product "Xen" and version " <= 4.11.1"		-		Affected
Citrix Search vendor "Citrix"		Xenserver Search vendor "Citrix" for product "Xenserver"				7.0 Search vendor "Citrix" for product "Xenserver" and version "7.0"		-		Affected
Citrix Search vendor "Citrix"		Xenserver Search vendor "Citrix" for product "Xenserver"				7.1 Search vendor "Citrix" for product "Xenserver" and version "7.1"		cu1, ltsr		Affected
Citrix Search vendor "Citrix"		Xenserver Search vendor "Citrix" for product "Xenserver"				7.5 Search vendor "Citrix" for product "Xenserver" and version "7.5"		-		Affected
Citrix Search vendor "Citrix"		Xenserver Search vendor "Citrix" for product "Xenserver"				7.6 Search vendor "Citrix" for product "Xenserver" and version "7.6"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected