CVE-2020-29040

Published: Nov 24, 2020 Last Modified: Nov 21, 2024 EU-VD ID: EUVD-2020-21422 Aliases: GSD-2020-29040
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,8
Source: [email protected]
Attack Vector: local
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: changed
Confidentiality: high
Integrity: high
Availability: high
MEDIUM 4,6
Source: [email protected]
Access Vector: local
Access Complexity: low
Authentication: none
Confidentiality: partial
Integrity: partial
Availability: partial

Description

AI Translation Available

An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service (stack corruption), cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671.

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
0,0007
Percentile
0,2th
Updated

EPSS Score Trend (Last 90 Days)

193

Off-by-one Error

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Availability Integrity Confidentiality Access Control
Potential Impacts:
Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Instability Modify Memory Execute Unauthorized Code Or Commands Bypass Protection Mechanism
Applicable Platforms
Languages: C, Not Language-Specific
View CWE Details
787

Out-of-bounds Write

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Availability Other
Potential Impacts:
Modify Memory Execute Unauthorized Code Or Commands Dos: Crash, Exit, Or Restart Unexpected State
Applicable Platforms
Languages: Assembly, C, C++, Memory-Unsafe
Technologies: ICS/OT
Likelihood of Exploit: High
View CWE Details
Operating System

Xen by Xen

Product Information
Vendor Xen
Product Xen
Version Range Affected
To 4.14.0 (inclusive)
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://xenbits.xen.org/xsa/advisory-355.html
Vendor Advisory
https://xenbits.xen.org/xsa/advisory-355.html
http://www.openwall.com/lists/oss-security/2021/01/19/4
Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/19/4
http://xenbits.xen.org/xsa/advisory-355.html
Vendor Advisory
http://xenbits.xen.org/xsa/advisory-355.html
https://xenbits.xen.org/xsa/advisory-355.html
Vendor Advisory
https://xenbits.xen.org/xsa/advisory-355.html
http://www.openwall.com/lists/oss-security/2021/01/19/4
Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/19/4
http://xenbits.xen.org/xsa/advisory-355.html
Vendor Advisory
http://xenbits.xen.org/xsa/advisory-355.html