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Uncontrolled Resource Consumption

CVE-2024-3651

High
7.5/10

Summary

A vulnerability was identified in the kjd/idna library, specifically within the "idna.encode()" function. The issue arises from the function's handling of crafted input strings, which can lead to quadratic complexity and consequently, a denial of service condition. This vulnerability is triggered by a crafted input that causes the "idna.encode()" function to process the input with considerable computational load, significantly increasing the processing time in a quadratic manner relative to the input size. This issue affects idna versions prior to 3.7.

  • LOW
  • NETWORK
  • NONE
  • UNCHANGED
  • NONE
  • NONE
  • NONE
  • HIGH

CWE-400 - Uncontrolled resource consumption

An uncontrolled resource allocation attack (also known as resource exhaustion attack) triggers unauthorized overconsumption of the limited resources in an application, such as memory, file system storage, database connection pool entries, and CPU. This may lead to denial of service for valid users and degradation of the application's functionality as well as that of the host operating system.

References

Advisory Timeline

  • Published