GHSA-gm2p-wf5c-w3pj
First published: Mon Apr 21 2025(Updated: )
## Summary [Amazon.IonDotnet (ion-dotnet)](https://github.com/amazon-ion/ion-dotnet) is a .NET library with an implementation of the [Ion data serialization format](https://amazon-ion.github.io/ion-docs/). 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](https://github.com/amazon-ion/ion-dotnet/releases/tag/v1.3.1). 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](https://aws.amazon.com/security/vulnerability-reporting) or directly via email to [aws-security@amazon.com](mailto: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.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| nuget/Amazon.IonDotnet | <1.3.1 | 1.3.1 |
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Reference Links
Frequently Asked Questions
What is the severity of GHSA-gm2p-wf5c-w3pj?
The severity of GHSA-gm2p-wf5c-w3pj is classified as moderate.
How do I fix GHSA-gm2p-wf5c-w3pj?
To fix GHSA-gm2p-wf5c-w3pj, update the Amazon.IonDotnet package to version 1.3.1 or later.
What versions of Amazon.IonDotnet are affected by GHSA-gm2p-wf5c-w3pj?
GHSA-gm2p-wf5c-w3pj affects all versions of Amazon.IonDotnet below 1.3.1.
What is Amazon.IonDotnet related to GHSA-gm2p-wf5c-w3pj?
Amazon.IonDotnet is a .NET library that implements the Ion data serialization format and contains the vulnerability identified as GHSA-gm2p-wf5c-w3pj.
What impact does GHSA-gm2p-wf5c-w3pj have on applications?
GHSA-gm2p-wf5c-w3pj can lead to potential data exposure vulnerabilities in applications using the affected version of Amazon.IonDotnet.
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-gm2p-wf5c-w3pj
- alias/CVE-2025-3857
- agent/software-canonical-lookup
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- agent/softwarecombine
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- package-manager/nuget