Amazon Linux 2023 : aspnetcore-runtime-9.0, aspnetcore-runtime-dbg-9.0, aspnetcore-targeting-pack-9.0 (ALAS2023-2026-3248)

critical Nessus Plugin ID 370300

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Synopsis

The remote Amazon Linux 2023 host is missing a security update.

Description

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-3248 advisory.

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network. (CVE-2026-109468)

Uncontrolled recursion in .NET allows an unauthorized attacker to deny service over a network.
(CVE-2026-58280)

Insertion of sensitive information into sent data in .NET allows an unauthorized attacker to disclose information over a network. (CVE-2026-66822)

Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.
(CVE-2026-69651)

Out-of-bounds write in .NET Framework allows an unauthorized attacker to execute code over a network.
(CVE-2026-70007)

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network. (CVE-2026-70159)

Improper authentication in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network. (CVE-2026-70175)

Authentication bypass by spoofing in ASP.NET Core allows an authorized attacker to elevate privileges over a network. (CVE-2026-70179)

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network. (CVE-2026-70181)

Concurrent execution using shared resource with improper synchronization ('race condition') in ASP.NET Core allows an authorized attacker to elevate privileges over a network. (CVE-2026-70183)

Deadlock in ASP.NET Core allows an unauthorized attacker to deny service over a network. (CVE-2026-70186)

Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to bypass a security feature over a network. (CVE-2026-70188)

Inefficient algorithmic complexity in ASP.NET Core allows an unauthorized attacker to deny service over a network. (CVE-2026-70196)

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code over a network.
(CVE-2026-83520)

Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.
(CVE-2026-84008)

Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to perform tampering over a network. (CVE-2026-88092)

Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally. (CVE-2026-96225)

Improper neutralization of input during web page generation ('cross-site scripting') in ASP.NET Core allows an unauthorized attacker to execute code over a network. (CVE-2026-96230)

Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally. (CVE-2026-96231)

Out-of-bounds write in ASP.NET Core allows an unauthorized attacker to deny service over a network.
(CVE-2026-96233)

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network. (CVE-2026-96236)

Inclusion of functionality from untrusted control sphere in .NET allows an unauthorized attacker to execute code over a network. (CVE-2026-96237)

Origin validation error in .NET allows an unauthorized attacker to bypass a security feature over a network. (CVE-2026-96238)

Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.
(CVE-2026-96958)

Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network. (CVE-2026-96959)

Asymmetric resource consumption (amplification) in .NET allows an unauthorized attacker to deny service over a network. (CVE-2026-96960)

Tenable has extracted the preceding description block directly from the tested product 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

Run 'dnf update dotnet9.0 --releasever 2023.12.20261021' or or 'dnf update --advisory ALAS2023-2026-3248 --releasever 2023.12.20261021' to update your system.

Plugin Details

Severity: Critical

ID: 370300

File Name: al2023_ALAS2023-2026-3248.nasl

Version: 1.3

Type: Local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 10/22/2026

Updated: 10/30/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.52

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-96230

CVSS v3

Risk Factor: Critical

Base Score: 9.4

Temporal Score: 8.2

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

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

CVSS Score Source: CVE-2026-88092

Vulnerability Information

CPE: cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:aspnetcore-runtime-9.0, p-cpe:/a:amazon:linux:aspnetcore-runtime-dbg-9.0, p-cpe:/a:amazon:linux:aspnetcore-targeting-pack-9.0, p-cpe:/a:amazon:linux:dotnet-apphost-pack-9.0-debuginfo, p-cpe:/a:amazon:linux:dotnet-apphost-pack-9.0, p-cpe:/a:amazon:linux:dotnet-host-debuginfo, p-cpe:/a:amazon:linux:dotnet-host, p-cpe:/a:amazon:linux:dotnet-hostfxr-9.0-debuginfo, p-cpe:/a:amazon:linux:dotnet-hostfxr-9.0, p-cpe:/a:amazon:linux:dotnet-runtime-9.0-debuginfo, p-cpe:/a:amazon:linux:dotnet-runtime-9.0, p-cpe:/a:amazon:linux:dotnet-runtime-dbg-9.0, p-cpe:/a:amazon:linux:dotnet-sdk-9.0-debuginfo, p-cpe:/a:amazon:linux:dotnet-sdk-9.0-source-built-artifacts, p-cpe:/a:amazon:linux:dotnet-sdk-9.0, p-cpe:/a:amazon:linux:dotnet-sdk-aot-9.0-debuginfo, p-cpe:/a:amazon:linux:dotnet-sdk-aot-9.0, p-cpe:/a:amazon:linux:dotnet-sdk-dbg-9.0, p-cpe:/a:amazon:linux:dotnet-targeting-pack-9.0, p-cpe:/a:amazon:linux:dotnet-templates-9.0, p-cpe:/a:amazon:linux:dotnet9.0-debugsource, p-cpe:/a:amazon:linux:dotnet, p-cpe:/a:amazon:linux:netstandard-targeting-pack-2.1

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 10/22/2026

Vulnerability Publication Date: 10/13/2026

Reference Information

CVE: CVE-2026-109468, CVE-2026-58280, CVE-2026-66822, CVE-2026-69651, CVE-2026-70007, CVE-2026-70159, CVE-2026-70175, CVE-2026-70179, CVE-2026-70181, CVE-2026-70183, CVE-2026-70186, CVE-2026-70188, CVE-2026-70196, CVE-2026-83520, CVE-2026-84008, CVE-2026-88092, CVE-2026-96225, CVE-2026-96230, CVE-2026-96231, CVE-2026-96233, CVE-2026-96236, CVE-2026-96237, CVE-2026-96238, CVE-2026-96958, CVE-2026-96959, CVE-2026-96960

IAVA: 2026-A-1126

Detections

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