BDU:2022-02866
Scores
EPSS
Percentile: 0.0%
CVSS
CVSS Score: 9.8/10
All CVSS Scores
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Privileges Required
None (N)
Describes the level of privileges an attacker must possess
User Interaction
None (N)
Captures the requirement for a human user participation
Scope
Unchanged (U)
Determines if a successful attack impacts components beyond the vulnerable component
Confidentiality Impact
High (H)
Measures the impact to the confidentiality of information
Integrity Impact
High (H)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
High (H)
Measures the impact to the availability of the impacted component
Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Authentication
None (N)
Describes the level of privileges an attacker must possess
Confidentiality Impact
Complete
Measures the impact to the confidentiality of information
Integrity Impact
Complete
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
Complete
Measures the impact to the availability of the impacted component
Description
Уязвимость сетевой файловой системы Network File System (NFS) операционной системы Windows существует из-за недостаточной проверки входных данных. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, выполнить произвольный код
Scaner-VS 7 — a modern vulnerability management solution
Sources
Related Vulnerabilities
Exploits
Recommendations
Source: bdu
Установка обновлений из доверенных источников.
В связи со сложившейся обстановкой и введенными санкциями против Российской Федерации рекомендуется устанавливать обновления программного обеспечения только после оценки всех сопутствующих рисков.
Компенсирующие меры:
- отключение NFSV2 и NFSV3 следующим способом (отключение может негативно повлиять на функционирование системы).
Выполнить команду PowerShell:
PS C:\Set-NfsServerConfiguration -EnableNFSV2 $false -EnableNFSV3 $false
Перезапустить сервер NFS или перезагрузить компьютер.
Для перезапуска NFS-сервера, запустить окно cmd с помощью «Запуск от имени администратора» и ввести следующие команды:
nfsadmin server stop
nfsadmin server start
Чтобы убедиться, что NFSv2 и NFSv3 отключены, выполнить следующую команду в окне Powershell:
PS C:\Get-NfsServerConfiguration
Пример вывода в результате выполнения команды:
State : Running
LogActivity :
CharacterTranslationFile : Not Configured
DirectoryCacheSize (KB) : 128
HideFilesBeginningInDot : Disabled
EnableNFSV2 : False
EnableNFSV3 : False
EnableNFSV4 : True
EnableAuthenticationRenewal : True
AuthenticationRenewalIntervalSec : 600
NlmGracePeriodSec : 45
MountProtocol : {TCP, UDP}
NfsProtocol : {TCP, UDP}
NisProtocol : {TCP, UDP}
NlmProtocol : {TCP, UDP}
NsmProtocol : {TCP, UDP}
PortmapProtocol : {TCP, UDP}
MapServerProtocol : {TCP, UDP}
PreserveInheritance : False
NetgroupCacheTimeoutSec : 30
UnmappedUserAccount :
WorldAccount : Everyone
AlwaysOpenByName : False
GracePeriodSec : 240
LeasePeriodSec : 120
OnlineTimeoutSec : 180
Необходимо убедиться, что EnableNFSv2 и EnableNFSv3 имеют значение «False».
Информация производителя:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-26937
Vulnerable Software (117)
Type: Configuration
Vendor: microsoft corp
Product: windows_server_2008
Operating System: * *
{ "version_exact": "service pack 2"}
Source: bdu
Type: Configuration
Vendor: microsoft corp
Product: windows_server_2008
Operating System: * *
{ "version_exact": "r2 service pack 1"}
Source: bdu
Type: Configuration
Vendor: microsoft corp
Product: windows_server_2008
Operating System: * *
{ "version_exact": "service pack 2 (server core installation)"}
Source: bdu
Type: Configuration
Vendor: microsoft corp
Product: windows_server_2008
Operating System: * *
{ "version_exact": "r2 service pack 1 (server core installation)"}
Source: bdu
Type: Configuration
Vendor: microsoft corp
Product: windows_server_2012
Operating System: * *
{ "version_exact": "r2"}
Source: bdu
Type: Configuration
Vendor: microsoft corp
Product: windows_server_2012
Operating System: * *
{ "version_exact": "r2 (server core installation)"}
Source: bdu
Type: Configuration
Vendor: microsoft corp
Product: windows_server_2012
Operating System: * *
{ "version_exact": "(server core installation)"}
Source: bdu
Type: Configuration
Vendor: microsoft corp
Product: windows_server_2012
Operating System: * *
{ "version_exact": "*"}
Source: bdu
Type: Configuration
Vendor: microsoft corp
Product: windows_server_2016
Operating System: * *
{ "version_exact": "*"}
Source: bdu
Type: Configuration
Vendor: microsoft corp
Product: windows_server_2016
Operating System: * *
{ "version_exact": "(server core installation)"}
Source: bdu
Type: Configuration
Vendor: microsoft corp
Product: windows_server_2019
Operating System: * *
{ "version_exact": "*"}
Source: bdu
Type: Configuration
Vendor: microsoft corp
Product: windows_server_2019
Operating System: * *
{ "version_exact": "(server core installation)"}
Source: bdu
Type: Configuration
Vendor: microsoft corp
Product: windows_server_2022
Operating System: * *
{ "version_exact": "*"}
Source: bdu
Type: Configuration
Vendor: microsoft corp
Product: windows_server_2022
Operating System: * *
{ "version_exact": "(server core installation)"}
Source: bdu
Type: Configuration
Vendor: microsoft corp
Product: windows_server_20h2
Operating System: * *
{ "version_exact": "(server core installation)"}
Source: bdu
Type: Windows KB
Vendor: Microsoft
Product: Windows
Version: 19042.2075
Operating System: Windows 19042 build 2075
Identifier: KB5017380
Source: msrc
Type: Windows KB
Vendor: Microsoft
Product: Windows
Version: 19042.1708
Operating System: Windows 19042 build 1708
Identifier: KB5015020
Source: msrc
Type: Windows KB
Vendor: Microsoft
Product: Windows
Version: 10.0.19042.1706
Operating System: Windows 19042 build 1706
Identifier: KB5013942
Source: msrc
Type: Windows KB
Vendor: Microsoft
Product: Windows
Version: 10.0.17763.2928
Operating System: Windows 17763 build 2928
Identifier: KB5013941
Source: msrc
Type: Windows KB
Vendor: Microsoft
Product: Windows
Version: 10.0.14393.5125
Operating System: Windows 14393 build 5125
Identifier: KB5013952
Source: msrc