Ubuntu update for dotnet6

Published: 2024-01-11

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2024-0057 CVE-2024-21319
CWE-ID	CWE-254 CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Ubuntu Operating systems & Components / Operating system dotnet8 (Ubuntu package) Operating systems & Components / Operating system package or component dotnet7 (Ubuntu package) Operating systems & Components / Operating system package or component dotnet6 (Ubuntu package) Operating systems & Components / Operating system package or component dotnet-sdk-8.0 (Ubuntu package) Operating systems & Components / Operating system package or component dotnet-sdk-7.0 (Ubuntu package) Operating systems & Components / Operating system package or component dotnet-sdk-6.0 (Ubuntu package) Operating systems & Components / Operating system package or component dotnet-runtime-8.0 (Ubuntu package) Operating systems & Components / Operating system package or component dotnet-runtime-7.0 (Ubuntu package) Operating systems & Components / Operating system package or component dotnet-runtime-6.0 (Ubuntu package) Operating systems & Components / Operating system package or component dotnet-hostfxr-8.0 (Ubuntu package) Operating systems & Components / Operating system package or component dotnet-hostfxr-7.0 (Ubuntu package) Operating systems & Components / Operating system package or component dotnet-hostfxr-6.0 (Ubuntu package) Operating systems & Components / Operating system package or component dotnet-host-8.0 (Ubuntu package) Operating systems & Components / Operating system package or component dotnet-host-7.0 (Ubuntu package) Operating systems & Components / Operating system package or component dotnet-host (Ubuntu package) Operating systems & Components / Operating system package or component aspnetcore-runtime-8.0 (Ubuntu package) Operating systems & Components / Operating system package or component aspnetcore-runtime-7.0 (Ubuntu package) Operating systems & Components / Operating system package or component aspnetcore-runtime-6.0 (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Security features bypass

EUVDB-ID: #VU85247

Risk: High

CVSSv4.0: 8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2024-0057

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to security features bypass in NET, .NET Framework and Visual Studio. A remote attacker can present an arbitrary untrusted certificate with malformed signatures and bypass the security feature.

Mitigation

Update the affected package dotnet6 to the latest version.

Vulnerable software versions

Ubuntu: 22.04 - 23.10

dotnet8 (Ubuntu package): before 8.0.101-8.0.1-0ubuntu1~23.10.1

dotnet7 (Ubuntu package): before 7.0.115-0ubuntu1~22.04.1

dotnet6 (Ubuntu package): before 6.0.126-0ubuntu1~22.04.1

dotnet-sdk-8.0 (Ubuntu package): before 8.0.101-0ubuntu1~23.10.1

dotnet-sdk-7.0 (Ubuntu package): before 7.0.115-0ubuntu1~22.04.1

dotnet-sdk-6.0 (Ubuntu package): before 6.0.126-0ubuntu1~22.04.1

dotnet-runtime-8.0 (Ubuntu package): before 8.0.1-0ubuntu1~23.10.1

dotnet-runtime-7.0 (Ubuntu package): before 7.0.115-0ubuntu1~22.04.1

dotnet-runtime-6.0 (Ubuntu package): before 6.0.126-0ubuntu1~22.04.1

dotnet-hostfxr-8.0 (Ubuntu package): before 8.0.1-0ubuntu1~23.10.1

dotnet-hostfxr-7.0 (Ubuntu package): before 7.0.115-0ubuntu1~22.04.1

dotnet-hostfxr-6.0 (Ubuntu package): before 6.0.126-0ubuntu1~22.04.1

dotnet-host-8.0 (Ubuntu package): before 8.0.1-0ubuntu1~23.10.1

dotnet-host-7.0 (Ubuntu package): before 7.0.115-0ubuntu1~22.04.1

dotnet-host (Ubuntu package): before 6.0.126-0ubuntu1~22.04.1

aspnetcore-runtime-8.0 (Ubuntu package): before 8.0.1-0ubuntu1~23.10.1

aspnetcore-runtime-7.0 (Ubuntu package): before 7.0.115-0ubuntu1~22.04.1

aspnetcore-runtime-6.0 (Ubuntu package): before 6.0.126-0ubuntu1~22.04.1

CPE2.3

External links

https://ubuntu.com/security/notices/USN-6578-1

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) Input validation error

EUVDB-ID: #VU85210

Risk: Low

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

CVE-ID: CVE-2024-21319

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in the Microsoft Identity. A remote administrator can pass specially crafted input to the application and perform a denial of service (DoS) attack.