Infinite loop condition in Amazon.IonDotnet
Summary
Amazon.IonDotnet (ion-dotnet) is a .NET library with an implementation of the Ion data serialization format.
An issue exists in Amazon.IonDotnet and the RawBinaryReader class where, under certain conditions, an actor could trigger an infinite loop condition.
Impact
When reading binary Ion data through Amazon.IonDotnet using the RawBinaryReader class, Amazon.IonDotnet does not check the number of bytes read from the underlying stream while deserializing the binary format. If the Ion data is malformed or truncated, this triggers an infinite loop condition that could potentially result in a denial of service.
Impacted versions: <=1.3.0
Patches
This issue has been addressed in Amazon.IonDotnet version 1.3.1. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.
Workarounds
There are no workarounds. Upgrade to version 1.3.1.
References
If you have any questions or comments about this advisory, contact AWS/Amazon Security via our vulnerability reporting page or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue.
Credit
We would like to thank Josh Coleman from Symbotic for collaborating on this issue through the coordinated vulnerability disclosure process.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| .NET (NuGet) | Amazon.IonDotnet | < 1.3.1 | 1.3.1 |
Referencias
- https://github.com/amazon-ion/ion-dotnet/security/advisories/GHSA-gm2p-wf5c-w3pj
- https://nvd.nist.gov/vuln/detail/CVE-2025-3857
- https://github.com/amazon-ion/ion-dotnet/commit/34a4f5215eceac1bb7bf434c4f2310d64d1b703b
- https://aws.amazon.com/security/security-bulletins/AWS-2025-009
- https://github.com/amazon-ion/ion-dotnet
- https://github.com/amazon-ion/ion-dotnet/releases/tag/v1.3.1
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Debilidad (CWE)
CWE-502, CWE-835- Plataforma
- .NET (NuGet)
- Paquete
Amazon.IonDotnet- Publicada
- 21.04.2025
- Actualizado
- 11.10.2026 11:23
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-gm2p-wf5c-w3pj - CC BY 4.0
Historial de vulnerabilidades: Amazon.IonDotnet
Todas las vulnerabilidades publicadas de este paquete (.NET (NuGet)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 2
- Primera → última
- 04.2025 10.2025
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 2
Divulgaciones por año
- 2025: 2
- 2026: 0
-
Infinite loop condition in Amazon.IonDotnet esta entrada
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