Detections
Analytics
Security Update for .NET Core SDK (August 2023)
high Nessus Plugin ID 180502
Language:
Synopsis
The remote Windows host is affected by multiple Microsoft .NET Core SDK vulnerabilities.Description
The version of Microsoft .NET Core SDK installed on the remote host is 6.0.x prior to 6.0.121, 6.0.x prior to 6.0.316, 6.0.x prior to 6.0.413, 7.0.x prior to 7.0.110 or 7.0.x prior to 307. It is, therefore, affected by multiple vulnerabilities, as follows:- A vulnerability exists when some dotnet commands are used in directories with weaker permissions which can result in remote code execution. (CVE-2023-35390)
- A vulnerability exists in .NET 6.0 and .NET 7.0 applications using SignalR when redis backplane use might result in information disclosure. (CVE-2023-35391)
- A vulnerability exists in Kestrel where, on detecting a potentially malicious client, Kestrel will sometimes fail to disconnect it, resulting in denial of service. (CVE-2023-38180)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Update .NET Core SDK, remove vulnerable packages and refer to KB5029688 and KB5029689.See Also
https://dotnet.microsoft.com/download/dotnet/6.0
https://dotnet.microsoft.com/download/dotnet/7.0
https://github.com/dotnet/sdk/security/advisories/GHSA-p8rx-fwgq-rh2f
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35390
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35391
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-38180
Plugin Details
Severity: High
ID: 180502
File Name: smb_nt_ms23_aug_dotnet_core_sdk.nasl
Version: 1.2
Type: local
Agent: windows
Family: Windows
Published: 9/5/2023
Updated: 9/6/2023
Configuration: Enable paranoid mode
Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N
CVSS Score Source: CVE-2023-35391
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 7.2
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C
CVSS Score Source: CVE-2023-35390
Vulnerability Information
CPE: cpe:/a:microsoft:.net_core
Required KB Items: Settings/ParanoidReport, installed_sw/.NET Core SDK Windows
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 8/8/2023
Vulnerability Publication Date: 8/8/2023
CISA Known Exploited Vulnerability Due Dates: 8/30/2023