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Ubuntu 22.04 LTS / 23.04 : .NET vulnerability (USN-6427-1)

critical Nessus Plugin ID 182872

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 22.04 LTS / 23.04 host has packages installed that are affected by a vulnerability as referenced in the USN-6427-1 advisory.

 It was discovered that the .NET Kestrel web server did not properly handle HTTP/2 requests. A remote attacker could possibly use this issue to cause a denial of service.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-6427-1

Plugin Details

Severity: Critical

ID: 182872

File Name: ubuntu_USN-6427-1.nasl

Version: 1.9

Type: local

Agent: unix

Published: 10/10/2023

Updated: 9/18/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, 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:N/I:N/A:C

CVSS Score Source: CVE-2023-44487

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Threat Score: 9.3

Threat Vector: CVSS:4.0/E:A

Vector: 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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:dotnet-sdk-6.0, p-cpe:/a:canonical:ubuntu_linux:netstandard-targeting-pack-2.1-7.0, p-cpe:/a:canonical:ubuntu_linux:dotnet-hostfxr-7.0, p-cpe:/a:canonical:ubuntu_linux:aspnetcore-runtime-6.0, p-cpe:/a:canonical:ubuntu_linux:aspnetcore-runtime-7.0, p-cpe:/a:canonical:ubuntu_linux:dotnet-targeting-pack-7.0, p-cpe:/a:canonical:ubuntu_linux:dotnet7, p-cpe:/a:canonical:ubuntu_linux:dotnet-runtime-6.0, p-cpe:/a:canonical:ubuntu_linux:aspnetcore-targeting-pack-6.0, p-cpe:/a:canonical:ubuntu_linux:dotnet-apphost-pack-7.0, p-cpe:/a:canonical:ubuntu_linux:dotnet-apphost-pack-6.0, p-cpe:/a:canonical:ubuntu_linux:netstandard-targeting-pack-2.1, p-cpe:/a:canonical:ubuntu_linux:dotnet-host-7.0, p-cpe:/a:canonical:ubuntu_linux:dotnet-templates-7.0, p-cpe:/a:canonical:ubuntu_linux:aspnetcore-targeting-pack-7.0, p-cpe:/a:canonical:ubuntu_linux:dotnet-hostfxr-6.0, p-cpe:/a:canonical:ubuntu_linux:dotnet-templates-6.0, p-cpe:/a:canonical:ubuntu_linux:dotnet-runtime-7.0, p-cpe:/a:canonical:ubuntu_linux:dotnet-sdk-6.0-source-built-artifacts, p-cpe:/a:canonical:ubuntu_linux:dotnet-sdk-7.0-source-built-artifacts, cpe:/o:canonical:ubuntu_linux:23.04, p-cpe:/a:canonical:ubuntu_linux:dotnet-host, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:dotnet6, p-cpe:/a:canonical:ubuntu_linux:dotnet-targeting-pack-6.0, p-cpe:/a:canonical:ubuntu_linux:dotnet-sdk-7.0

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/10/2023

Vulnerability Publication Date: 10/10/2023

CISA Known Exploited Vulnerability Due Dates: 10/31/2023

Reference Information

CVE: CVE-2023-44487

IAVA: 2023-A-0543-S

IAVB: 2023-B-0083-S

USN: 6427-1