Anolis OS update for dotnet



| Updated: 2025-03-28
Risk High
Patch available YES
Number of vulnerabilities 6
CVE-ID CVE-2020-1108
CVE-2020-1147
CVE-2021-1721
CVE-2021-26701
CVE-2021-24112
CVE-2021-34485
CWE-ID CWE-20
CWE-91
CWE-200
Exploitation vector Network
Public exploit Vulnerability #2 is being exploited in the wild.
Vulnerable software
 Anolis OS
Operating systems & Components / Operating system

dotnet-sdk-2.1.5xx
Operating systems & Components / Operating system package or component

dotnet-sdk-2.1
Operating systems & Components / Operating system package or component

dotnet-runtime-2.1
Operating systems & Components / Operating system package or component

dotnet-host-fxr-2.1
Operating systems & Components / Operating system package or component

Vendor OpenAnolis

Security Bulletin

This security bulletin contains information about 6 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU27823

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-2020-1108

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 the .NET Core or .NET Framework improperly handles web requests. A remote attacker can send specially crafted requests 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-sdk-2.1.5xx: before 2.1.526-1

dotnet-sdk-2.1: before 2.1.526-1

dotnet-runtime-2.1: before 2.1.30-1

dotnet-host-fxr-2.1: before 2.1.30-1

CPE2.3 External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0032


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) XML injection

EUVDB-ID: #VU29836

Risk: High

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2020-1147

CWE-ID: CWE-91 - XML Injection

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation when processing XML data in .NET Framework, Microsoft SharePoint, and Visual Studio. A remote unauthenticated attacker can pass specially crafted XML data to the application and execute arbitrary code on the system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

dotnet-sdk-2.1.5xx: before 2.1.526-1

dotnet-sdk-2.1: before 2.1.526-1

dotnet-runtime-2.1: before 2.1.30-1

dotnet-host-fxr-2.1: before 2.1.30-1

CPE2.3 External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0032


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?

Yes. This vulnerability is being exploited in the wild.

3) Input validation error

EUVDB-ID: #VU50494

Risk: Medium

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

CVE-ID: CVE-2021-1721

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-sdk-2.1.5xx: before 2.1.526-1

dotnet-sdk-2.1: before 2.1.526-1

dotnet-runtime-2.1: before 2.1.30-1

dotnet-host-fxr-2.1: before 2.1.30-1

CPE2.3 External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0032


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) Input validation error

EUVDB-ID: #VU50496

Risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-26701

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to insufficient validation of user-supplied input in .NET Core. A remote attacker can pass specially crafted input to the application and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

dotnet-sdk-2.1.5xx: before 2.1.526-1

dotnet-sdk-2.1: before 2.1.526-1

dotnet-runtime-2.1: before 2.1.30-1

dotnet-host-fxr-2.1: before 2.1.30-1

CPE2.3 External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0032


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.

5) Input validation error

EUVDB-ID: #VU50495

Risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-24112

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to insufficient validation of user-supplied input in .NET Core. A remote attacker can pass specially crafted input to the application and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

dotnet-sdk-2.1.5xx: before 2.1.526-1

dotnet-sdk-2.1: before 2.1.526-1

dotnet-runtime-2.1: before 2.1.30-1

dotnet-host-fxr-2.1: before 2.1.30-1

CPE2.3 External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0032


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.

6) 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-sdk-2.1.5xx: before 2.1.526-1

dotnet-sdk-2.1: before 2.1.526-1

dotnet-runtime-2.1: before 2.1.30-1

dotnet-host-fxr-2.1: before 2.1.30-1

CPE2.3 External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0032


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.



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