Ubuntu update for dotnet6

Published: 2024-07-10

Risk	High
Patch available	YES
Number of vulnerabilities	3
CVE-ID	CVE-2024-30105 CVE-2024-35264 CVE-2024-38095
CWE-ID	CWE-400 CWE-416 CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Ubuntu Operating systems & Components / Operating system dotnet6 (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-6.0 (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 (Ubuntu package) Operating systems & Components / Operating system package or component aspnetcore-runtime-6.0 (Ubuntu package) Operating systems & Components / Operating system package or component dotnet8 (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-runtime-8.0 (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-host-8.0 (Ubuntu package) Operating systems & Components / Operating system package or component aspnetcore-runtime-8.0 (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Resource exhaustion

EUVDB-ID: #VU94043

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-30105

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources in .NET Core and Visual Studio. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Update the affected package dotnet6 to the latest version.

Vulnerable software versions

Ubuntu: 22.04 - 24.04

dotnet6 (Ubuntu package): before 6.0.132-0ubuntu1~23.10.1

dotnet-sdk-6.0 (Ubuntu package): before 6.0.132-0ubuntu1~23.10.1

dotnet-runtime-6.0 (Ubuntu package): before 6.0.132-0ubuntu1~23.10.1

dotnet-hostfxr-6.0 (Ubuntu package): before 6.0.132-0ubuntu1~23.10.1

dotnet-host (Ubuntu package): before 6.0.132-0ubuntu1~23.10.1

aspnetcore-runtime-6.0 (Ubuntu package): before 6.0.132-0ubuntu1~23.10.1

dotnet8 (Ubuntu package): before 8.0.107-8.0.7-0ubuntu1~24.04.1

dotnet-sdk-8.0 (Ubuntu package): before 8.0.107-0ubuntu1~24.04.1

dotnet-runtime-8.0 (Ubuntu package): before 8.0.7-0ubuntu1~24.04.1

dotnet-hostfxr-8.0 (Ubuntu package): before 8.0.7-0ubuntu1~24.04.1

dotnet-host-8.0 (Ubuntu package): before 8.0.7-0ubuntu1~24.04.1

aspnetcore-runtime-8.0 (Ubuntu package): before 8.0.7-0ubuntu1~24.04.1

External links

http://ubuntu.com/security/notices/USN-6889-1

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) Use-after-free

EUVDB-ID: #VU94041

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-35264

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in .NET and Visual Studio. A remote attacker can win a race condition and execute arbitrary code on the target system.