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Ubuntu 23.10 : .NET vulnerabilities (USN-6438-1)

critical Nessus Plugin ID 183429

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 23.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6438-1 advisory.

 Kevin Jones discovered that .NET did not properly process certain X.509 certificates. An attacker could possibly use this issue to cause a denial of service. (CVE-2023-36799)

 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. (CVE-2023-44487)

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

Note that Nessus has not tested for these issues 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-6438-1

Plugin Details

Severity: Critical

ID: 183429

File Name: ubuntu_USN-6438-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 10/19/2023

Updated: 9/18/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, 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, cpe:/o:canonical:ubuntu_linux:23.10, 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, p-cpe:/a:canonical:ubuntu_linux:dotnet-host, 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/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/19/2023

Vulnerability Publication Date: 9/12/2023

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

Reference Information

CVE: CVE-2023-36799, CVE-2023-44487

IAVB: 2023-B-0083-S

USN: 6438-1