CVE-2020-27777

Published: Dic 15, 2020 Last Modified: Nov 21, 2024 EU-VD ID: EUVD-2020-20281 Aliases: GSD-2020-27777
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,7
Source: [email protected]
Attack Vector: local
Attack Complexity: low
Privileges Required: high
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
HIGH 7,2
Source: [email protected]
Access Vector: local
Access Complexity: low
Authentication: none
Confidentiality: complete
Integrity: complete
Availability: complete

Description

AI Translation Available

A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down (usually due to Secure Boot) guest system running on top of PowerVM or KVM hypervisors (pseries platform) a root like local user could use this flaw to further increase their privileges to that of a running kernel.

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
0,0003
Percentile
0,1th
Updated

EPSS Score Trend (Last 90 Days)

862

Missing Authorization

Incomplete
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Access Control Availability
Potential Impacts:
Read Application Data Read Files Or Directories Modify Application Data Modify Files Or Directories Gain Privileges Or Assume Identity Bypass Protection Mechanism Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)
Applicable Platforms
Technologies: AI/ML, Database Server, Not Technology-Specific, Web Server
Likelihood of Exploit: High
View CWE Details
Operating System

Enterprise Linux by Redhat

Product Information
Vendor Redhat
Product Enterprise Linux
Version 7.0
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Enterprise Linux by Redhat

Product Information
Vendor Redhat
Product Enterprise Linux
Version 5.0
cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Enterprise Linux by Redhat

Product Information
Vendor Redhat
Product Enterprise Linux
Version 6.0
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Openshift Container Platform by Redhat

Product Information
Vendor Redhat
Product Openshift Container Platform
Version 4.4
cpe:2.3:a:redhat:openshift_container_platform:4.4:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Linux Kernel by Linux

Product Information
Vendor Linux
Product Linux Kernel
Version Range Affected
To 4.14.204 (exclusive)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Linux Kernel by Linux

Product Information
Vendor Linux
Product Linux Kernel
Version Range Affected
From 5.5 (inclusive)
To 5.9.5 (exclusive)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Linux Kernel by Linux

Product Information
Vendor Linux
Product Linux Kernel
Version Range Affected
From 4.15 (inclusive)
To 4.19.155 (exclusive)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Openshift Container Platform by Redhat

Product Information
Vendor Redhat
Product Openshift Container Platform
Version 4.6
cpe:2.3:a:redhat:openshift_container_platform:4.6:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Linux Kernel by Linux

Product Information
Vendor Linux
Product Linux Kernel
Version Range Affected
From 4.20 (inclusive)
To 5.4.75 (exclusive)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Openshift Container Platform by Redhat

Product Information
Vendor Redhat
Product Openshift Container Platform
Version 4.5
cpe:2.3:a:redhat:openshift_container_platform:4.5:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Enterprise Linux by Redhat

Product Information
Vendor Redhat
Product Enterprise Linux
Version 8.0
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://bugzilla.redhat.com/show_bug.cgi?id=1900844
Issue Tracking Patch Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1900844
https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/lin…
Exploit Patch Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?h=nex…
https://www.openwall.com/lists/oss-security/2020/10/09/1
Exploit Mailing List Patch Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/10/09/1
https://www.openwall.com/lists/oss-security/2020/11/23/2
Mailing List Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/11/23/2
https://bugzilla.redhat.com/show_bug.cgi?id=1900844
Issue Tracking Patch Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1900844
https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/lin…
Exploit Patch Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?h=nex…
https://www.openwall.com/lists/oss-security/2020/10/09/1
Exploit Mailing List Patch Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/10/09/1
https://www.openwall.com/lists/oss-security/2020/11/23/2
Mailing List Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/11/23/2