ALAS2023-2026-3367

Amazon Linux 2023 Security Advisory: ALAS2023-2026-3367
Advisory Released Date: 2026-10-30
Advisory Updated Date: 2026-11-02
Severity: Important
Issue Overview:

Improper control of generation of code ('code injection') in ASP.NET Core allows an unauthorized attacker to execute code over a network. (CVE-2026-102870)

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

A vulnerability in the Node.js Brotli decoder can result in an out-of-bounds memory write when processing crafted Brotli input. Successful exploitation may lead to memory corruption and remote code execution. (CVE-2026-111497)

Incorrect default permissions in ASP.NET Core allows an authorized attacker to elevate privileges locally. (CVE-2026-114148)

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

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)

Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network. (CVE-2026-70197)

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)

Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network. (CVE-2026-96222)

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

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)

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)


Affected Packages:

dotnet8.0


Issue Correction:
Run dnf update dotnet8.0 --releasever 2023.12.20261102 or dnf update --advisory ALAS2023-2026-3367 --releasever 2023.12.20261102 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation

New Packages:
aarch64:
    dotnet-sdk-8.0-source-built-artifacts-8.0.133-1.amzn2023.0.1.aarch64
    dotnet-runtime-8.0-debuginfo-8.0.33-1.amzn2023.0.1.aarch64
    dotnet8.0-debuginfo-8.0.133-1.amzn2023.0.1.aarch64
    dotnet-hostfxr-8.0-8.0.33-1.amzn2023.0.1.aarch64
    aspnetcore-runtime-8.0-8.0.33-1.amzn2023.0.1.aarch64
    dotnet-sdk-8.0-debuginfo-8.0.133-1.amzn2023.0.1.aarch64
    dotnet-hostfxr-8.0-debuginfo-8.0.33-1.amzn2023.0.1.aarch64
    dotnet-runtime-dbg-8.0-8.0.33-1.amzn2023.0.1.aarch64
    dotnet-templates-8.0-8.0.133-1.amzn2023.0.1.aarch64
    netstandard-targeting-pack-2.1-8.0.133-1.amzn2023.0.1.aarch64
    dotnet-runtime-8.0-8.0.33-1.amzn2023.0.1.aarch64
    dotnet-apphost-pack-8.0-8.0.33-1.amzn2023.0.1.aarch64
    dotnet-host-debuginfo-8.0.33-1.amzn2023.0.1.aarch64
    aspnetcore-runtime-dbg-8.0-8.0.33-1.amzn2023.0.1.aarch64
    dotnet-sdk-dbg-8.0-8.0.133-1.amzn2023.0.1.aarch64
    dotnet-host-8.0.33-1.amzn2023.0.1.aarch64
    aspnetcore-targeting-pack-8.0-8.0.33-1.amzn2023.0.1.aarch64
    dotnet-apphost-pack-8.0-debuginfo-8.0.33-1.amzn2023.0.1.aarch64
    dotnet-8.0.133-1.amzn2023.0.1.aarch64
    dotnet-targeting-pack-8.0-8.0.33-1.amzn2023.0.1.aarch64
    dotnet8.0-debugsource-8.0.133-1.amzn2023.0.1.aarch64
    dotnet-sdk-8.0-8.0.133-1.amzn2023.0.1.aarch64

src:
    dotnet8.0-8.0.133-1.amzn2023.0.1.src

x86_64:
    dotnet-sdk-dbg-8.0-8.0.133-1.amzn2023.0.1.x86_64
    dotnet-runtime-8.0-debuginfo-8.0.33-1.amzn2023.0.1.x86_64
    aspnetcore-runtime-dbg-8.0-8.0.33-1.amzn2023.0.1.x86_64
    dotnet-8.0.133-1.amzn2023.0.1.x86_64
    dotnet-apphost-pack-8.0-debuginfo-8.0.33-1.amzn2023.0.1.x86_64
    dotnet-templates-8.0-8.0.133-1.amzn2023.0.1.x86_64
    netstandard-targeting-pack-2.1-8.0.133-1.amzn2023.0.1.x86_64
    dotnet-hostfxr-8.0-8.0.33-1.amzn2023.0.1.x86_64
    dotnet-targeting-pack-8.0-8.0.33-1.amzn2023.0.1.x86_64
    dotnet-sdk-8.0-source-built-artifacts-8.0.133-1.amzn2023.0.1.x86_64
    dotnet-host-debuginfo-8.0.33-1.amzn2023.0.1.x86_64
    dotnet-sdk-8.0-debuginfo-8.0.133-1.amzn2023.0.1.x86_64
    aspnetcore-runtime-8.0-8.0.33-1.amzn2023.0.1.x86_64
    dotnet-runtime-dbg-8.0-8.0.33-1.amzn2023.0.1.x86_64
    dotnet-apphost-pack-8.0-8.0.33-1.amzn2023.0.1.x86_64
    dotnet-host-8.0.33-1.amzn2023.0.1.x86_64
    aspnetcore-targeting-pack-8.0-8.0.33-1.amzn2023.0.1.x86_64
    dotnet-runtime-8.0-8.0.33-1.amzn2023.0.1.x86_64
    dotnet-hostfxr-8.0-debuginfo-8.0.33-1.amzn2023.0.1.x86_64
    dotnet-sdk-8.0-8.0.133-1.amzn2023.0.1.x86_64
    dotnet8.0-debuginfo-8.0.133-1.amzn2023.0.1.x86_64
    dotnet8.0-debugsource-8.0.133-1.amzn2023.0.1.x86_64

Additional References

Release Notes:  Amazon Linux 2023 Release Notes

Red Hat: CVE-2026-102870, CVE-2026-109468, CVE-2026-111497, CVE-2026-114148, CVE-2026-58280, 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-2026-70197, CVE-2026-83520, CVE-2026-84008, CVE-2026-96222, CVE-2026-96225, CVE-2026-96231, CVE-2026-96233, CVE-2026-96236, CVE-2026-96237, CVE-2026-96958, CVE-2026-96959, CVE-2026-96960

Mitre: CVE-2026-102870, CVE-2026-109468, CVE-2026-111497, CVE-2026-114148, CVE-2026-58280, 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-2026-70197, CVE-2026-83520, CVE-2026-84008, CVE-2026-96222, CVE-2026-96225, CVE-2026-96231, CVE-2026-96233, CVE-2026-96236, CVE-2026-96237, CVE-2026-96958, CVE-2026-96959, CVE-2026-96960