ghsa-q5r6-9qwq-g2wj
Vulnerability from github
Summary
Amazon.IonDotnet is a library for the Dotnet language that is used to read and write Amazon Ion data. An issue exists where, under certain circumstances, the library could an infinite loop, resulting in denial of service. As of August 20, 2025, this library has been deprecated and will not receive further updates.
Impact
An infinite loop issue in Amazon.IonDotnet library versions <v1.3.2 may allow a threat actor to cause a denial of service through a specially crafted text input. This invalid input triggered an error condition in the parser that was handled improperly, resulting in an infinite loop.
Impacted versions:
<1.3.2
Patches
This issue has been addressed in Amazon.IonDotnet version 1.3.2. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.
Workarounds
Only accept data from trusted sources, written using a supported Ion library.
References
If you have any questions or comments about this advisory, we ask that you contact AWS Security via our vulnerability reporting page or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue.
{
"affected": [
{
"package": {
"ecosystem": "NuGet",
"name": "Amazon.IonDotnet"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-11573"
],
"database_specific": {
"cwe_ids": [
"CWE-1286",
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2025-10-09T22:15:57Z",
"nvd_published_at": "2025-10-09T18:15:49Z",
"severity": "HIGH"
},
"details": "### Summary\nAmazon.IonDotnet is a library for the Dotnet language that is used to read and write Amazon Ion data. An issue exists where, under certain circumstances, the library could an infinite loop, resulting in denial of service. As of August 20, 2025, this library has been deprecated and will not receive further updates.\n\n### Impact\nAn infinite loop issue in Amazon.IonDotnet library versions \u003cv1.3.2 may allow a threat actor to cause a denial of service through a specially crafted text input. This invalid input triggered an error condition in the parser that was handled improperly, resulting in an infinite loop.\n\n### Impacted versions:\n\u003c1.3.2\n\n### Patches\nThis issue has been addressed in Amazon.IonDotnet version [1.3.2](https://www.nuget.org/packages/Amazon.IonDotnet/1.3.2). We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.\n\n### Workarounds\nOnly accept data from trusted sources, written using a supported Ion library.\n\n### References\nIf you have any questions or comments about this advisory, we ask that you contact AWS 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.",
"id": "GHSA-q5r6-9qwq-g2wj",
"modified": "2025-10-09T22:15:57Z",
"published": "2025-10-09T22:15:57Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/amazon-ion/ion-dotnet/security/advisories/GHSA-q5r6-9qwq-g2wj"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11573"
},
{
"type": "WEB",
"url": "https://github.com/amazon-ion/ion-dotnet/pull/160"
},
{
"type": "WEB",
"url": "https://github.com/amazon-ion/ion-dotnet/commit/edaff75fe5abbb71e647bed812c608c0c5e2fbab"
},
{
"type": "WEB",
"url": "https://aws.amazon.com/security/security-bulletins/AWS-2025-022"
},
{
"type": "PACKAGE",
"url": "https://github.com/amazon-ion/ion-dotnet"
},
{
"type": "WEB",
"url": "https://github.com/amazon-ion/ion-dotnet/releases/tag/v1.3.2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Amazon.IonDotnet is vulnerable to Denial of Service attacks"
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.