Internationalized Domain Names in Applications (IDNA) vulnerable to denial of service from specially crafted inputs to idna.encode
Impact
A specially crafted argument to the idna.encode() function could consume significant resources. This may lead to a denial-of-service.
Patches
The function has been refined to reject such strings without the associated resource consumption in version 3.7.
Workarounds
Domain names cannot exceed 253 characters in length, if this length limit is enforced prior to passing the domain to the idna.encode() function it should no longer consume significant resources. This is triggered by arbitrarily large inputs that would not occur in normal usage, but may be passed to the library assuming there is no preliminary input validation by the higher-level application.
References
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Python (PyPI) | idna | < 3.7 | 3.7 |
Referencias
- https://huntr.com/bounties/93d78d07-d791-4b39-a845-cbfabc44aadb
- https://github.com/kjd/idna/commit/1d365e17e10d72d0b7876316fc7b9ca0eebdd38d
- https://github.com/advisories/GHSA-jjg7-2v4v-x38h
- https://github.com/kjd/idna/security/advisories/GHSA-jjg7-2v4v-x38h
- https://nvd.nist.gov/vuln/detail/CVE-2024-3651
- https://github.com/kjd/idna
- https://github.com/pypa/advisory-database/tree/main/vulns/idna/PYSEC-2024-60.yaml
- https://lists.debian.org/debian-lts-announce/2024/05/msg00006.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4YQUPYH3SVZ5GFF2CDQ55FCM575AZTF2
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F2S5E23N6E52S46KGNYTDFB75LOC4N4D
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S5IDLLD2IKSIVRBSLB34WTSYGLMWUFWF
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ULSC7HBJKXB3BZV367WM5BR6DFEC4Z43
- Vector CVSS
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Debilidad (CWE)
CWE-1333, CWE-400- Plataforma
- Python (PyPI)
- Paquete
idna- Publicada
- 11.04.2024
- Actualizado
- 11.10.2026 15:17
Fuentes y licencias
OSV / GitHub Advisory Database - PYSEC-2024-60 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-jjg7-2v4v-x38h - CC BY 4.0
Historial de vulnerabilidades: idna
Todas las vulnerabilidades publicadas de este paquete (Python (PyPI)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 2
- Primera → última
- 04.2024 05.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Media 2
Divulgaciones por año
- 2024: 1
- 2025: 0
- 2026: 1
-
Internationalized Domain Names in Applications (IDNA) vulnerable to denial of service from specially crafted inputs to idna.encode esta entrada
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