CVE-2024-3651
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductIdna
PublishedJul 7, 2024
First seenJul 7, 2024
Weakness typeCWE-1333CWE-1333
How to fix
Update
- idna3.7 or later
- kjd internationalized_domain_names_in_applications3.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| idnaPyPI | v < 3.7, 0.1 ≤ v < 3.7 | 3.7 |
| kjd internationalized_domain_names_in_applications | 0.2 ≤ v < 3.7 | 3.7 |
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