Anolis OS update for dotnet3.1

Published: 2022-03-03 | Updated: 2025-03-28

Risk	Medium
Patch available	YES
Number of vulnerabilities	5
CVE-ID	CVE-2021-26423 CVE-2021-31204 CVE-2021-31957 CVE-2021-34485 CVE-2021-34532
CWE-ID	CWE-20 CWE-264 CWE-200
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Anolis OS Operating systems & Components / Operating system dotnet-templates-3.1 Operating systems & Components / Operating system package or component dotnet-targeting-pack-3.1 Operating systems & Components / Operating system package or component dotnet-sdk-3.1 Operating systems & Components / Operating system package or component dotnet-runtime-3.1 Operating systems & Components / Operating system package or component dotnet-hostfxr-3.1 Operating systems & Components / Operating system package or component dotnet-apphost-pack-3.1 Operating systems & Components / Operating system package or component aspnetcore-targeting-pack-3.1 Operating systems & Components / Operating system package or component aspnetcore-runtime-3.1 Operating systems & Components / Operating system package or component
Vendor	OpenAnolis

Security Bulletin

This security bulletin contains information about 5 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU55694

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-26423

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in the .NET Core and Visual Studio. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

dotnet-templates-3.1: before 3.1.416-3.0.1

dotnet-targeting-pack-3.1: before 3.1.22-3.0.1

dotnet-sdk-3.1: before 3.1.416-3.0.1

dotnet-runtime-3.1: before 3.1.22-3.0.1

dotnet-hostfxr-3.1: before 3.1.22-3.0.1

dotnet-apphost-pack-3.1: before 3.1.22-3.0.1

aspnetcore-targeting-pack-3.1: before 3.1.22-3.0.1

aspnetcore-runtime-3.1: before 3.1.22-3.0.1

CPE2.3

External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0029

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU53123

Risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-31204

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in .NET and Visual Studio, which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

dotnet-templates-3.1: before 3.1.416-3.0.1

dotnet-targeting-pack-3.1: before 3.1.22-3.0.1

dotnet-sdk-3.1: before 3.1.416-3.0.1

dotnet-runtime-3.1: before 3.1.22-3.0.1

dotnet-hostfxr-3.1: before 3.1.22-3.0.1

dotnet-apphost-pack-3.1: before 3.1.22-3.0.1

aspnetcore-targeting-pack-3.1: before 3.1.22-3.0.1

aspnetcore-runtime-3.1: before 3.1.22-3.0.1

CPE2.3

External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0029

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Input validation error

EUVDB-ID: #VU53881

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-31957

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in .NET Core and Visual Studio. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

dotnet-templates-3.1: before 3.1.416-3.0.1

dotnet-targeting-pack-3.1: before 3.1.22-3.0.1

dotnet-sdk-3.1: before 3.1.416-3.0.1

dotnet-runtime-3.1: before 3.1.22-3.0.1

dotnet-hostfxr-3.1: before 3.1.22-3.0.1

dotnet-apphost-pack-3.1: before 3.1.22-3.0.1

aspnetcore-targeting-pack-3.1: before 3.1.22-3.0.1

aspnetcore-runtime-3.1: before 3.1.22-3.0.1

CPE2.3

External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0029

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Information disclosure

EUVDB-ID: #VU55693

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-34485

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the .NET Core and Visual Studio. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

dotnet-templates-3.1: before 3.1.416-3.0.1

dotnet-targeting-pack-3.1: before 3.1.22-3.0.1

dotnet-sdk-3.1: before 3.1.416-3.0.1

dotnet-runtime-3.1: before 3.1.22-3.0.1

dotnet-hostfxr-3.1: before 3.1.22-3.0.1

dotnet-apphost-pack-3.1: before 3.1.22-3.0.1

aspnetcore-targeting-pack-3.1: before 3.1.22-3.0.1

aspnetcore-runtime-3.1: before 3.1.22-3.0.1

CPE2.3

External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0029

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Information disclosure

EUVDB-ID: #VU55692

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-34532

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the ASP.NET Core and Visual Studio. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

dotnet-templates-3.1: before 3.1.416-3.0.1

dotnet-targeting-pack-3.1: before 3.1.22-3.0.1

dotnet-sdk-3.1: before 3.1.416-3.0.1

dotnet-runtime-3.1: before 3.1.22-3.0.1

dotnet-hostfxr-3.1: before 3.1.22-3.0.1

dotnet-apphost-pack-3.1: before 3.1.22-3.0.1

aspnetcore-targeting-pack-3.1: before 3.1.22-3.0.1

aspnetcore-runtime-3.1: before 3.1.22-3.0.1

CPE2.3

External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0029

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.