CVE-2019-19580

Published: Dic 11, 2019 Last Modified: Nov 21, 2024 EU-VD ID: EUVD-2019-9197 Aliases: GSD-2019-19580
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,6
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: high
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
MEDIUM 6,0
Source: [email protected]
Access Vector: network
Access Complexity: medium
Authentication: single
Confidentiality: partial
Integrity: partial
Availability: partial

Description

AI Translation Available

An issue was discovered in Xen through 4.12.x allowing x86 PV guest OS users to gain host OS privileges by leveraging race conditions in pagetable promotion and demotion operations, because of an incomplete fix for CVE-2019-18421. XSA-299 addressed several critical issues in restartable PV type change operations. Despite extensive testing and auditing, some corner cases were missed. A malicious PV guest administrator may be able to escalate their privilege to that of the host. All security-supported versions of Xen are vulnerable. Only x86 systems are affected. Arm systems are not affected. Only x86 PV guests can leverage the vulnerability. x86 HVM and PVH guests cannot leverage the vulnerability. Note that these attacks require very precise timing, which may be difficult to exploit in practice.

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
0,0066
Percentile
0,7th
Updated

EPSS Score Trend (Last 90 Days)

362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Availability Confidentiality Integrity Access Control
Potential Impacts:
Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other) Dos: Crash, Exit, Or Restart Dos: Instability Read Files Or Directories Read Application Data Execute Unauthorized Code Or Commands Gain Privileges Or Assume Identity Bypass Protection Mechanism
Applicable Platforms
Languages: C, C++, Java
Technologies: Mobile, ICS/OT
Likelihood of Exploit: Medium
View CWE Details
Operating System

Xen by Xen

Product Information
Vendor Xen
Product Xen
Version Range Affected
To 4.12.1 (inclusive)
cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:*
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
http://lists.opensuse.org/opensuse-security-announce/2020-0…
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
https://seclists.org/bugtraq/2020/Jan/21
https://security.gentoo.org/glsa/202003-56
https://security.gentoo.org/glsa/202003-56
https://www.debian.org/security/2020/dsa-4602
https://www.debian.org/security/2020/dsa-4602
https://xenbits.xen.org/xsa/advisory-310.html
Patch Vendor Advisory
https://xenbits.xen.org/xsa/advisory-310.html
http://lists.opensuse.org/opensuse-security-announce/2020-0…
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
https://seclists.org/bugtraq/2020/Jan/21
https://security.gentoo.org/glsa/202003-56
https://security.gentoo.org/glsa/202003-56
https://www.debian.org/security/2020/dsa-4602
https://www.debian.org/security/2020/dsa-4602
https://xenbits.xen.org/xsa/advisory-310.html
Patch Vendor Advisory
https://xenbits.xen.org/xsa/advisory-310.html