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TI-2025-03406 Aliases CVE-2025-3857GHSA-gm2p-wf5c-w3pj

Infinite loop condition in Amazon.IonDotnet

Priority MEDIUM 45CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution, Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-502 and CWE-835.

Summary

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. Users should upgrade to Amazon.IonDotnet version 1.3.1 and ensure any forked or derivative code is patched to incorporate the new fixes.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00622 50th percentileScored 2026-11-07
Fix Fixed Amazon Ion Dotnet (Amazon): 1.3.1Amazon.IonDotnet (NuGet): 1.3.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AWSAmazon Ion Dotnetbefore 1.3.11.3.1Patch availableCNA
—Amazon.IonDotnet (NuGet)before 1.3.11.3.1Patch availableGHSA-gm2p-wf5c-w3pj
  • Amazon Ion Dotnet VendorAWS Affected before 1.3.1 Fixed in 1.3.1 Patch available CNA
  • Amazon.IonDotnet (NuGet) Vendor— Affected before 1.3.1 Fixed in 1.3.1 Patch available GHSA-gm2p-wf5c-w3pj

Remediation

  • Fix · CNA Amazon Ion Dotnet (Amazon) Fixed in 1.3.1
  • Fix · GHSA-gm2p-wf5c-w3pj Amazon.IonDotnet (NuGet) Fixed in 1.3.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-3857
  2. 2026-10-03 Alias added: GHSA-gm2p-wf5c-w3pj
  3. 2026-11-06 EPSS moved to the 50th–90th percentile

References

Patch 1

Advisory 3

Other 3

  • TI-2026-23989 crypto: algif_aead - Revert to operating out-of-place KEVCVSS 3.1HIGH 7.8
  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2024-18648 Amazon AWS Amplify CLI before 12.10.1 incorrectly configures the role trust policy of IAM… CVSS 3.1CRITICAL 9.8
  • TI-2024-05929 Openssh: regresshion - race condition in ssh allows rce/dos CVSS 3.1HIGH 8.1
  • TI-2025-03847 Input validation issue in AWS Amplify Studio UI component properties CVSS 4.0CRITICAL 9.0
  • TI-2026-11603 HTTP/2 Stream Parser Confusion Body-Inspection Bypass in Amazon CloudFront with AWS WAF CVSS 4.0HIGH 7.9
See all 383 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences