CVE-2020-11740

Debian Security Advisory 4723-1

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (without active profiling) to obtain sensitive information about other guests. Unprivileged guests can request to map xenoprof buffers, even if profiling has not been enabled for those guests. These buffers were not scrubbed.

Se detectó un problema en xenoprof en Xen versiones hasta 4.13.x, permitiendo a usuarios invitados del Sistema Operativo (sin perfiles activos) obtener información confidencial sobre otros invitados. Los invitados no privilegiados pueden solicitar mapear los búferes de xenoprof, inclusive si la creación de perfiles no se ha habilitado para esos invitados. Estos búferes no se limpiaron.

Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service, guest-to-host privilege escalation or information leaks.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-04-14 CVE Reserved
2020-04-14 CVE Published
2024-08-04 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-212: Improper Removal of Sensitive Information Before Storage or Transfer

CAPEC

References (9)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2020/04/14/1	2023-11-07
http://xenbits.xen.org/xsa/advisory-313.html	2023-11-07
https://xenbits.xen.org/xsa/advisory-313.html	2023-11-07

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00006.html	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5M2XRNCHOGGTJQBZQJ7DCV6ZNAKN3LE2	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NVTP4OYHCTRU3ONFJOFJQVNDFB25KLLG	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YMAW7D2MP6RE4BFI5BZWOBBWGY3VSOFN	2023-11-07
https://security.gentoo.org/glsa/202005-08	2023-11-07
https://www.debian.org/security/2020/dsa-4723	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"				>= 3.2.0 <= 4.13.0 Search vendor "Xen" for product "Xen" and version " >= 3.2.0 <= 4.13.0"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.13.0 Search vendor "Xen" for product "Xen" and version "4.13.0"		rc1		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.13.0 Search vendor "Xen" for product "Xen" and version "4.13.0"		rc2		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				30 Search vendor "Fedoraproject" for product "Fedora" and version "30"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				31 Search vendor "Fedoraproject" for product "Fedora" and version "31"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				32 Search vendor "Fedoraproject" for product "Fedora" and version "32"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.1 Search vendor "Opensuse" for product "Leap" and version "15.1"		-		Affected