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CVE
PUBLISHED

CVE-2024-3651

Denial of Service via Quadratic Complexity in kjd/idna

Assigner@huntr_ai
Reserved2024-04-10
Published2024-07-07
Updated2024-07-07

Description

A vulnerability was identified in the kjd/idna library, specifically within the `idna.encode()` function, affecting version 3.6. 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.



MEDIUM: 6.2CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-400 Uncontrolled Resource Consumption

Product status

Any version before 3.7
affected

References

https://huntr.com/bounties/93d78d07-d791-4b39-a845-cbfabc44aadb

https://github.com/kjd/idna/commit/1d365e17e10d72d0b7876316fc7b9ca0eebdd38d

cve.org CVE-2024-3651

nvd.nist.gov CVE-2024-3651

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